{"id": "bioev_medquad_0000001_8", "pmid": null, "task": "medical_explanation", "question": "What are the treatments for Acromegaly ?", "context": "Topic: Acromegaly\nNIH Source: NIH/MedQuAD\nClinical Information: No single treatment is effective for all patients. Treatment should be individualized, and often combined, depending on patient characteristics such as age and tumor size.\n \nIf the tumor has not yet invaded surrounding nonpituitary tissues, removal of the pituitary adenoma by an experienced neurosurgeon is usually the first choice. Even if a cure is not possible, surgery may be performed if the patient has symptoms of neurological problems such as loss of peripheral vision or cranial nerve problems. After surgery, hormone levels are measured to determine whether a cure has been achieved. This determination can take up to 8 weeks because IGF-I lasts a long time in the body's circulation. If cured, a patient must be monitored for a long time for increasing GH levels.\n \nIf surgery does not normalize hormone levels or a relapse occurs, an endocrinologist should recommend additional drug therapy. With each medication, long-term therapy is necessary because their withdrawal can lead to rising GH levels and tumor re-expansion.\n \nRadiation therapy is generally reserved for patients whose tumors are not completely removed by surgery, who are not good candidates for surgery because of other health problems, or who do not respond adequately to surgery and medication.", "ground_truth": {"decision": "maybe", "answer": "No single treatment is effective for all patients. Treatment should be individualized, and often combined, depending on patient characteristics such as age and tumor size.\n \nIf the tumor has not yet invaded surrounding nonpituitary tissues, removal of the pituitary adenoma by an experienced neurosurgeon is usually the first choice. Even if a cure is not possible, surgery may be performed if the patient has symptoms of neurological problems such as loss of peripheral vision or cranial nerve problems. After surgery, hormone levels are measured to determine whether a cure has been achieved. This determination can take up to 8 weeks because IGF-I lasts a long time in the body's circulation. If cured, a patient must be monitored for a long time for increasing GH levels.\n \nIf surgery does not normalize hormone levels or a relapse occurs, an endocrinologist should recommend additional drug therapy. With each medication, long-term therapy is necessary because their withdrawal can lead to rising GH levels and tumor re-expansion.\n \nRadiation therapy is generally reserved for patients whose tumors are not completely removed by surgery, who are not good candidates for surgery because of other health problems, or who do not respond adequately to surgery and medication.", "evidence": ["No single treatment is effective for all patients. Treatment should be individualized, and often combined, depending on patient characteristics such as age and tumor size.\n                \nIf the tumor has not yet invaded surrounding nonpituitary tis..."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: medical_explanation\n\nEvidence Context:\nTopic: Acromegaly\nNIH Source: NIH/MedQuAD\nClinical Information: No single treatment is effective for all patients. Treatment should be individualized, and often combined, depending on patient characteristics such as age and tumor size.\n \nIf the tumor has not yet invaded surrounding nonpituitary tissues, removal of the pituitary adenoma by an experienced neurosurgeon is usually the first choice. Even if a cure is not possible, surgery may be performed if the patient has symptoms of neurological problems such as loss of peripheral vision or cranial nerve problems. After surgery, hormone levels are measured to determine whether a cure has been achieved. This determination can take up to 8 weeks because IGF-I lasts a long time in the body's circulation. If cured, a patient must be monitored for a long time for increasing GH levels.\n \nIf surgery does not normalize hormone levels or a relapse occurs, an endocrinologist should recommend additional drug therapy. With each medication, long-term therapy is necessary because their withdrawal can lead to rising GH levels and tumor re-expansion.\n \nRadiation therapy is generally reserved for patients whose tumors are not completely removed by surgery, who are not good candidates for surgery because of other health problems, or who do not respond adequately to surgery and medication.\n\nBiomedical Question:\nWhat are the treatments for Acromegaly ?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"No single treatment is effective for all patients. Treatment should be individualized, and often combined, depending on patient characteristics such as age and tumor size.\\n \\nIf the tumor has not yet invaded surrounding nonpituitary tissues, removal of the pituitary adenoma by an experienced neurosurgeon is usually the first choice. Even if a cure is not possible, surgery may be performed if the patient has symptoms of neurological problems such as loss of peripheral vision or cranial nerve problems. After surgery, hormone levels are measured to determine whether a cure has been achieved. This determination can take up to 8 weeks because IGF-I lasts a long time in the body's circulation. If cured, a patient must be monitored for a long time for increasing GH levels.\\n \\nIf surgery does not normalize hormone levels or a relapse occurs, an endocrinologist should recommend additional drug therapy. With each medication, long-term therapy is necessary because their withdrawal can lead to rising GH levels and tumor re-expansion.\\n \\nRadiation therapy is generally reserved for patients whose tumors are not completely removed by surgery, who are not good candidates for surgery because of other health problems, or who do not respond adequately to surgery and medication.\",\n  \"evidence\": [\n    \"No single treatment is effective for all patients. Treatment should be individualized, and often combined, depending on patient characteristics such as age and tumor size.\\n                \\nIf the tumor has not yet invaded surrounding nonpituitary tis...\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_18594195", "pmid": "18594195", "task": "evidence_qa", "question": "Do older patients who refuse to participate in a self-management intervention in the Netherlands differ from older patients who agree to participate?", "context": "BACKGROUND AND AIMS: Refusal of patients to participate in intervention programs is an important problem in clinical trials but, in general, researchers devote relatively little attention to it. In this article, a comparison is made between patients who, after having been invited, agreed to participate in a self-management intervention (participants) and those who refused (refusers). Compared with other studies of refusers, relatively more information could be gathered with regard to both their characteristics and reasons for refusing, because all potential participants were invited personally.\n\nMETHODS: Older patients from a Dutch outpatient clinic were invited to participate in a self-management intervention, and their characteristics were assessed. Demographic data were collected, as well as data on physical functioning and lack of emotional support. People who refused to participate were asked to give their reasons for refusing.\n\nRESULTS: Of the 361 patients invited, 267 (74%) refused participation. These refusers were more restricted in their mobility, lived further away from the location of the intervention, and had a partner more often than did the participants. No differences were found in level of education, age or gender. The main reasons given by respondents for refusing to participate were lack of time, travel distance, and transport problems.", "ground_truth": {"decision": "yes", "answer": "As in many studies, the refusal rate in this study is high, and seems to be related to physical mobility restrictions, travel distance and, partly, to availability of emotional support. These findings may be used to make the recruitment process more effective - for example, by offering transport to the location of the intervention.", "evidence": ["Of the 361 patients invited, 267 (74%) refused participation. These refusers were more restricted in their mobility, lived further away from the location of the intervention, and had a partner more often than did the participants. No differences were found in level of education, age or gender. The main reasons given by respondents for refusing to participate were lack of time, travel distance, and transport problems."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND AND AIMS: Refusal of patients to participate in intervention programs is an important problem in clinical trials but, in general, researchers devote relatively little attention to it. In this article, a comparison is made between patients who, after having been invited, agreed to participate in a self-management intervention (participants) and those who refused (refusers). Compared with other studies of refusers, relatively more information could be gathered with regard to both their characteristics and reasons for refusing, because all potential participants were invited personally.\n\nMETHODS: Older patients from a Dutch outpatient clinic were invited to participate in a self-management intervention, and their characteristics were assessed. Demographic data were collected, as well as data on physical functioning and lack of emotional support. People who refused to participate were asked to give their reasons for refusing.\n\nRESULTS: Of the 361 patients invited, 267 (74%) refused participation. These refusers were more restricted in their mobility, lived further away from the location of the intervention, and had a partner more often than did the participants. No differences were found in level of education, age or gender. The main reasons given by respondents for refusing to participate were lack of time, travel distance, and transport problems.\n\nBiomedical Question:\nDo older patients who refuse to participate in a self-management intervention in the Netherlands differ from older patients who agree to participate?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"As in many studies, the refusal rate in this study is high, and seems to be related to physical mobility restrictions, travel distance and, partly, to availability of emotional support. These findings may be used to make the recruitment process more effective - for example, by offering transport to the location of the intervention.\",\n  \"evidence\": [\n    \"Of the 361 patients invited, 267 (74%) refused participation. These refusers were more restricted in their mobility, lived further away from the location of the intervention, and had a partner more often than did the participants. No differences were found in level of education, age or gender. The main reasons given by respondents for refusing to participate were lack of time, travel distance, and transport problems.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_22251324", "pmid": "22251324", "task": "evidence_qa", "question": "Does performance in selection processes predict performance as a dental student?", "context": "OBJECTIVE: This study investigated associations between the performance of dental students in each of the three components of the selection procedure [academic average, Undergraduate Medicine and Health Sciences Admission Test (UMAT) and structured interview], socio-demographic characteristics and their academic success in an undergraduate dental surgery programme.\n\nMATERIALS AND METHODS: Longitudinal review of admissions data relating to students entering dental education at the University of Otago, New Zealand, between 2004 and 2009 was compared with academic performance throughout the dental programme.\n\nRESULTS AND DISCUSSION: After controlling for variables, pre-admission academic average, UMAT scores and interview performance did not predict performance as a dental student. Class place in second year, however, was a strong predictor of class place in final year. Multivariate analysis demonstrated that the best predictors of higher class placement in the final year were New Zealand European ethnicity and domestic (rather than international) student status. Other socio-demographic characteristics were not associated with performance. These interim findings provide a sound base for the ongoing study.", "ground_truth": {"decision": "no", "answer": "The study found important socio-demographic differences in pre-admission test scores, but those scores did not predict performance in the dental programme, whether measured in second year or in final year.", "evidence": ["After controlling for variables, pre-admission academic average, UMAT scores and interview performance did not predict performance as a dental student. Class place in second year, however, was a strong predictor of class place in final year. Multivariate analysis demonstrated that the best predictors of higher class placement in the final year were New Zealand European ethnicity and domestic (rather than international) student status. Other socio-demographic characteristics were not associated with performance. These interim findings provide a sound base for the ongoing study."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: This study investigated associations between the performance of dental students in each of the three components of the selection procedure [academic average, Undergraduate Medicine and Health Sciences Admission Test (UMAT) and structured interview], socio-demographic characteristics and their academic success in an undergraduate dental surgery programme.\n\nMATERIALS AND METHODS: Longitudinal review of admissions data relating to students entering dental education at the University of Otago, New Zealand, between 2004 and 2009 was compared with academic performance throughout the dental programme.\n\nRESULTS AND DISCUSSION: After controlling for variables, pre-admission academic average, UMAT scores and interview performance did not predict performance as a dental student. Class place in second year, however, was a strong predictor of class place in final year. Multivariate analysis demonstrated that the best predictors of higher class placement in the final year were New Zealand European ethnicity and domestic (rather than international) student status. Other socio-demographic characteristics were not associated with performance. These interim findings provide a sound base for the ongoing study.\n\nBiomedical Question:\nDoes performance in selection processes predict performance as a dental student?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"The study found important socio-demographic differences in pre-admission test scores, but those scores did not predict performance in the dental programme, whether measured in second year or in final year.\",\n  \"evidence\": [\n    \"After controlling for variables, pre-admission academic average, UMAT scores and interview performance did not predict performance as a dental student. Class place in second year, however, was a strong predictor of class place in final year. Multivariate analysis demonstrated that the best predictors of higher class placement in the final year were New Zealand European ethnicity and domestic (rather than international) student status. Other socio-demographic characteristics were not associated with performance. These interim findings provide a sound base for the ongoing study.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_23379759", "pmid": "23379759", "task": "evidence_qa", "question": "Can early second-look tympanoplasty reduce the rate of conversion to modified radical mastoidectomy?", "context": "OBJECTIVES: The aims of the study were to report the rates of recurrent and residual cholesteatoma following primary CAT surgery and to report the rate of conversion to a modified radical mastoidectomy.\n\nMETHODS: This was a retrospective review of a single surgeon series between 2006 and 2012.\n\nRESULTS: In total 132 second-look operations were undertaken, with a mean interval between primary surgery and second-look procedures of 6 months. The rate of cholesteatoma at second-look surgery was 19.7%, which was split into residual disease (10.6%) and recurrent disease (9.09%). New tympanic membrane defects with cholesteatoma were considered as recurrent disease. Residual disease was defined as cholesteatoma present behind an intact tympanic membrane. The majority of recurrent and residual disease was easily removed at second look (73.1%). Only four cases were converted to a modified radical mastoidectomy (3%) and three cases required a third-look procedure.", "ground_truth": {"decision": "yes", "answer": "Combined approach tympanoplasty (CAT) allows for successful treatment of cholesteatoma with rates of recurrent and residual disease comparable to open mastoid surgery. Early timing of second-look procedures allows easier removal of any recurrent or residual disease, which reduces the conversion rate to open mastoidectomy.", "evidence": ["In total 132 second-look operations were undertaken, with a mean interval between primary surgery and second-look procedures of 6 months. The rate of cholesteatoma at second-look surgery was 19.7%, which was split into residual disease (10.6%) and recurrent disease (9.09%). New tympanic membrane defects with cholesteatoma were considered as recurrent disease. Residual disease was defined as cholesteatoma present behind an intact tympanic membrane. The majority of recurrent and residual disease was easily removed at second look (73.1%). Only four cases were converted to a modified radical mastoidectomy (3%) and three cases required a third-look procedure."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVES: The aims of the study were to report the rates of recurrent and residual cholesteatoma following primary CAT surgery and to report the rate of conversion to a modified radical mastoidectomy.\n\nMETHODS: This was a retrospective review of a single surgeon series between 2006 and 2012.\n\nRESULTS: In total 132 second-look operations were undertaken, with a mean interval between primary surgery and second-look procedures of 6 months. The rate of cholesteatoma at second-look surgery was 19.7%, which was split into residual disease (10.6%) and recurrent disease (9.09%). New tympanic membrane defects with cholesteatoma were considered as recurrent disease. Residual disease was defined as cholesteatoma present behind an intact tympanic membrane. The majority of recurrent and residual disease was easily removed at second look (73.1%). Only four cases were converted to a modified radical mastoidectomy (3%) and three cases required a third-look procedure.\n\nBiomedical Question:\nCan early second-look tympanoplasty reduce the rate of conversion to modified radical mastoidectomy?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Combined approach tympanoplasty (CAT) allows for successful treatment of cholesteatoma with rates of recurrent and residual disease comparable to open mastoid surgery. Early timing of second-look procedures allows easier removal of any recurrent or residual disease, which reduces the conversion rate to open mastoidectomy.\",\n  \"evidence\": [\n    \"In total 132 second-look operations were undertaken, with a mean interval between primary surgery and second-look procedures of 6 months. The rate of cholesteatoma at second-look surgery was 19.7%, which was split into residual disease (10.6%) and recurrent disease (9.09%). New tympanic membrane defects with cholesteatoma were considered as recurrent disease. Residual disease was defined as cholesteatoma present behind an intact tympanic membrane. The majority of recurrent and residual disease was easily removed at second look (73.1%). Only four cases were converted to a modified radical mastoidectomy (3%) and three cases required a third-look procedure.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_14652839", "pmid": "14652839", "task": "evidence_qa", "question": "Does the sequence of clamp application during open abdominal aortic aneurysm surgery influence distal embolisation?", "context": "BACKGROUND: Embolisation of atherosclerotic debris during abdominal aortic aneurysm (AAA) repair is responsible for significant peri-operative morbidity. Reports have suggested that preferential clamping of the distal vessel(s) before the proximal aorta may decrease the number of emboli passing distally and hence reduce complications.\n\nMETHODS: Forty patients undergoing AAA repair were randomised to have either first clamping of the proximal aorta or the iliac vessels. Emboli passing through the Superficial Femoral Arteries were detected with a Transcranial Doppler ultrasound system.\n\nRESULTS: There was no difference between the two groups in the number of emboli detected (p=0.49) and no significant correlation between number of emboli and dissection time (r=0.0008). However, there was a significantly higher number of emboli in the patient sub-group that were current smokers (p=0.034).", "ground_truth": {"decision": "no", "answer": "There appears to be no difference in the numbers of emboli detected when the first vascular clamp is applied to the proximal aorta or iliacs.", "evidence": ["There was no difference between the two groups in the number of emboli detected (p=0.49) and no significant correlation between number of emboli and dissection time (r=0.0008). However, there was a significantly higher number of emboli in the patient sub-group that were current smokers (p=0.034)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Embolisation of atherosclerotic debris during abdominal aortic aneurysm (AAA) repair is responsible for significant peri-operative morbidity. Reports have suggested that preferential clamping of the distal vessel(s) before the proximal aorta may decrease the number of emboli passing distally and hence reduce complications.\n\nMETHODS: Forty patients undergoing AAA repair were randomised to have either first clamping of the proximal aorta or the iliac vessels. Emboli passing through the Superficial Femoral Arteries were detected with a Transcranial Doppler ultrasound system.\n\nRESULTS: There was no difference between the two groups in the number of emboli detected (p=0.49) and no significant correlation between number of emboli and dissection time (r=0.0008). However, there was a significantly higher number of emboli in the patient sub-group that were current smokers (p=0.034).\n\nBiomedical Question:\nDoes the sequence of clamp application during open abdominal aortic aneurysm surgery influence distal embolisation?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"There appears to be no difference in the numbers of emboli detected when the first vascular clamp is applied to the proximal aorta or iliacs.\",\n  \"evidence\": [\n    \"There was no difference between the two groups in the number of emboli detected (p=0.49) and no significant correlation between number of emboli and dissection time (r=0.0008). However, there was a significantly higher number of emboli in the patient sub-group that were current smokers (p=0.034).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_15530261", "pmid": "15530261", "task": "evidence_qa", "question": "Does screening or surveillance for primary hepatocellular carcinoma with ultrasonography improve the prognosis of patients?", "context": "PURPOSE: The purpose of this paper is to evaluate the efficacy of ultrasonographic screening for primary hepatocellular carcinoma.\n\nPATIENTS AND METHODS: A total of 680 eligible cases were classified into three groups (surveillance, opportunistic, and symptomatic groups) according to their initial exposure. We used survival time, tumor morphology, and T staging as prognostic outcomes. The outcomes of screened/unscreened and sur veillance/nonsur veillance were compared with the use of the logistic regression model.\n\nRESULTS: The adjusted odds ratios for the screened group versus the unscreened group, with 1-, 2-, and 3-year survival time being used as outcomes, were 0.33 (95% confidence interval [CI], 0.21-0.52), 0.33 (95% CI, 0.21-0.53), and 0.37 (95% CI, 0.23-0.61), respectively. The adjusted odds ratios for surveillance versus nonsurveillance were 0.58 (95% CI, 0.35-0.97), 0.45 (95% CI, 0.27-0.74), and 0.44 (95% CI, 0.26-0.73). The odds ratios were even smaller when tumor morphology or T stage was taken as the main outcome. All these results were statistically significant. There were significant gradient relationships between prognostic outcomes and extent of screening history.", "ground_truth": {"decision": "yes", "answer": "The significant impact of ultrasonographic screening on mortality reduction was demonstrated. These findings strongly suggest that early detection of hepatocellular carcinoma by ultrasound may improve the prognosis of patients with hepatocellular carcinoma.", "evidence": ["The adjusted odds ratios for the screened group versus the unscreened group, with 1-, 2-, and 3-year survival time being used as outcomes, were 0.33 (95% confidence interval [CI], 0.21-0.52), 0.33 (95% CI, 0.21-0.53), and 0.37 (95% CI, 0.23-0.61), respectively. The adjusted odds ratios for surveillance versus nonsurveillance were 0.58 (95% CI, 0.35-0.97), 0.45 (95% CI, 0.27-0.74), and 0.44 (95% CI, 0.26-0.73). The odds ratios were even smaller when tumor morphology or T stage was taken as the main outcome. All these results were statistically significant. There were significant gradient relationships between prognostic outcomes and extent of screening history."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: The purpose of this paper is to evaluate the efficacy of ultrasonographic screening for primary hepatocellular carcinoma.\n\nPATIENTS AND METHODS: A total of 680 eligible cases were classified into three groups (surveillance, opportunistic, and symptomatic groups) according to their initial exposure. We used survival time, tumor morphology, and T staging as prognostic outcomes. The outcomes of screened/unscreened and sur veillance/nonsur veillance were compared with the use of the logistic regression model.\n\nRESULTS: The adjusted odds ratios for the screened group versus the unscreened group, with 1-, 2-, and 3-year survival time being used as outcomes, were 0.33 (95% confidence interval [CI], 0.21-0.52), 0.33 (95% CI, 0.21-0.53), and 0.37 (95% CI, 0.23-0.61), respectively. The adjusted odds ratios for surveillance versus nonsurveillance were 0.58 (95% CI, 0.35-0.97), 0.45 (95% CI, 0.27-0.74), and 0.44 (95% CI, 0.26-0.73). The odds ratios were even smaller when tumor morphology or T stage was taken as the main outcome. All these results were statistically significant. There were significant gradient relationships between prognostic outcomes and extent of screening history.\n\nBiomedical Question:\nDoes screening or surveillance for primary hepatocellular carcinoma with ultrasonography improve the prognosis of patients?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"The significant impact of ultrasonographic screening on mortality reduction was demonstrated. These findings strongly suggest that early detection of hepatocellular carcinoma by ultrasound may improve the prognosis of patients with hepatocellular carcinoma.\",\n  \"evidence\": [\n    \"The adjusted odds ratios for the screened group versus the unscreened group, with 1-, 2-, and 3-year survival time being used as outcomes, were 0.33 (95% confidence interval [CI], 0.21-0.52), 0.33 (95% CI, 0.21-0.53), and 0.37 (95% CI, 0.23-0.61), respectively. The adjusted odds ratios for surveillance versus nonsurveillance were 0.58 (95% CI, 0.35-0.97), 0.45 (95% CI, 0.27-0.74), and 0.44 (95% CI, 0.26-0.73). The odds ratios were even smaller when tumor morphology or T stage was taken as the main outcome. All these results were statistically significant. There were significant gradient relationships between prognostic outcomes and extent of screening history.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_17429333", "pmid": "17429333", "task": "evidence_qa", "question": "Does menopausal transition affect the quality of life?", "context": "OBJECTIVE: The aim of this study was to investigate the role of menopausal transition and menopausal symptoms in relation to quality of life in a cohort of middle-aged women in Kinmen.\n\nDESIGN: A total of 734 premenopausal women participated in the baseline study, and 579 women (78.9%) completed a follow-up 2 years later. Quality of life was assessed by the Medical Outcomes Study Short Form-36. Participating women were asked for demographic data, about vasomotor symptoms, and to complete the Medical Outcomes Study Short Form-36 and the Hospital Anxiety and Depression Scale.\n\nRESULTS: There was no demographic difference between women who remained premenopausal and those who entered perimenopause except for age. Vitality deteriorated no matter whether the women stayed in premenopause or entered perimenopause. In multivariate analysis, only vasomotor symptoms had an adverse influence on role limitation of emotion after adjusting for age, education, menopausal status, baseline cognitive score, and Hospital Anxiety and Depression Scale score. The menopausal transition did not influence the eight domains of the Short Form-36 in the multivariate regression model.", "ground_truth": {"decision": "no", "answer": "This longitudinal study found no significant effect of menopausal transition on quality of life among Taiwanese women. The decline in the role limitations due to emotional problems was related to vasomotor symptoms.", "evidence": ["There was no demographic difference between women who remained premenopausal and those who entered perimenopause except for age. Vitality deteriorated no matter whether the women stayed in premenopause or entered perimenopause. In multivariate analysis, only vasomotor symptoms had an adverse influence on role limitation of emotion after adjusting for age, education, menopausal status, baseline cognitive score, and Hospital Anxiety and Depression Scale score. The menopausal transition did not influence the eight domains of the Short Form-36 in the multivariate regression model."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: The aim of this study was to investigate the role of menopausal transition and menopausal symptoms in relation to quality of life in a cohort of middle-aged women in Kinmen.\n\nDESIGN: A total of 734 premenopausal women participated in the baseline study, and 579 women (78.9%) completed a follow-up 2 years later. Quality of life was assessed by the Medical Outcomes Study Short Form-36. Participating women were asked for demographic data, about vasomotor symptoms, and to complete the Medical Outcomes Study Short Form-36 and the Hospital Anxiety and Depression Scale.\n\nRESULTS: There was no demographic difference between women who remained premenopausal and those who entered perimenopause except for age. Vitality deteriorated no matter whether the women stayed in premenopause or entered perimenopause. In multivariate analysis, only vasomotor symptoms had an adverse influence on role limitation of emotion after adjusting for age, education, menopausal status, baseline cognitive score, and Hospital Anxiety and Depression Scale score. The menopausal transition did not influence the eight domains of the Short Form-36 in the multivariate regression model.\n\nBiomedical Question:\nDoes menopausal transition affect the quality of life?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"This longitudinal study found no significant effect of menopausal transition on quality of life among Taiwanese women. The decline in the role limitations due to emotional problems was related to vasomotor symptoms.\",\n  \"evidence\": [\n    \"There was no demographic difference between women who remained premenopausal and those who entered perimenopause except for age. Vitality deteriorated no matter whether the women stayed in premenopause or entered perimenopause. In multivariate analysis, only vasomotor symptoms had an adverse influence on role limitation of emotion after adjusting for age, education, menopausal status, baseline cognitive score, and Hospital Anxiety and Depression Scale score. The menopausal transition did not influence the eight domains of the Short Form-36 in the multivariate regression model.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_10135926", "pmid": "10135926", "task": "evidence_qa", "question": "Is oral endotracheal intubation efficacy impaired in the helicopter environment?", "context": "INTRODUCTION: Patients transported by helicopter often require advanced airway management. The purpose of this study was to determine whether or not the in-flight environment of air medical transport in a BO-105 helicopter impairs the ability of flight nurses to perform oral endotracheal intubation.\n\nSETTING: The study was conducted in an MBB BO-105 helicopter.\n\nMETHODS: Flight nurses performed three manikin intubations in each of the two study environments: on an emergency department stretcher and in-flight in the BO-105 helicopter.\n\nRESULTS: The mean time required for in-flight intubation (25.9 +/- 10.9 seconds) was significantly longer than the corresponding time (13.2 +/- 2.8 seconds) required for intubation in the control setting (ANOVA, F = 38.7, p<.001). All intubations performed in the control setting were placed correctly in the trachea; there were two (6.7%) esophageal intubations in the in-flight setting. The difference in appropriate endotracheal intubation between the two settings was not significant (chi 2 = 0.3; p>0.05).", "ground_truth": {"decision": "yes", "answer": "Oral endotracheal intubation in the in-flight setting of the BO-105 helicopter takes approximately twice as long as intubation in a ground setting. The results support pre-flight intubation of patients who appear likely to require urgent intubation during air medical transport in the BO-105 helicopter.", "evidence": ["The mean time required for in-flight intubation (25.9 +/- 10.9 seconds) was significantly longer than the corresponding time (13.2 +/- 2.8 seconds) required for intubation in the control setting (ANOVA, F = 38.7, p<.001). All intubations performed in the control setting were placed correctly in the trachea; there were two (6.7%) esophageal intubations in the in-flight setting. The difference in appropriate endotracheal intubation between the two settings was not significant (chi 2 = 0.3; p>0.05)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nINTRODUCTION: Patients transported by helicopter often require advanced airway management. The purpose of this study was to determine whether or not the in-flight environment of air medical transport in a BO-105 helicopter impairs the ability of flight nurses to perform oral endotracheal intubation.\n\nSETTING: The study was conducted in an MBB BO-105 helicopter.\n\nMETHODS: Flight nurses performed three manikin intubations in each of the two study environments: on an emergency department stretcher and in-flight in the BO-105 helicopter.\n\nRESULTS: The mean time required for in-flight intubation (25.9 +/- 10.9 seconds) was significantly longer than the corresponding time (13.2 +/- 2.8 seconds) required for intubation in the control setting (ANOVA, F = 38.7, p<.001). All intubations performed in the control setting were placed correctly in the trachea; there were two (6.7%) esophageal intubations in the in-flight setting. The difference in appropriate endotracheal intubation between the two settings was not significant (chi 2 = 0.3; p>0.05).\n\nBiomedical Question:\nIs oral endotracheal intubation efficacy impaired in the helicopter environment?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Oral endotracheal intubation in the in-flight setting of the BO-105 helicopter takes approximately twice as long as intubation in a ground setting. The results support pre-flight intubation of patients who appear likely to require urgent intubation during air medical transport in the BO-105 helicopter.\",\n  \"evidence\": [\n    \"The mean time required for in-flight intubation (25.9 +/- 10.9 seconds) was significantly longer than the corresponding time (13.2 +/- 2.8 seconds) required for intubation in the control setting (ANOVA, F = 38.7, p<.001). All intubations performed in the control setting were placed correctly in the trachea; there were two (6.7%) esophageal intubations in the in-flight setting. The difference in appropriate endotracheal intubation between the two settings was not significant (chi 2 = 0.3; p>0.05).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_21394762", "pmid": "21394762", "task": "evidence_qa", "question": "Is pelvic pain associated with defecatory symptoms in women with pelvic organ prolapse?", "context": "OBJECTIVE: To investigate the significance of pelvic pain and its association with defecatory symptoms in women with pelvic organ prolapse (POP).\n\nSTUDY DESIGN: This is a cross sectional study of 248 women with stage II POP or greater. Women were stratified into \"pain\" and \"no-pain\" groups based on their response to a question on the Pelvic Floor Distress Inventory short form. Associations between patient demographics, exam findings and responses to validated questionnaires were evaluated.\n\nRESULTS: In women with POP, defecatory symptoms are significantly more common in women with pelvic pain including straining with bowel movement (OR 2.4, 95% CI 1.3, 4.6), sense of incomplete emptying (OR 4.4, 95% CI 2.3, 8.2), pain with bowel movement (OR 5.3, 95% CI 1.2, 23.0) and splinting with bowel movement (OR 3.8, 95% CI 2.0, 7.5).", "ground_truth": {"decision": "yes", "answer": "In women with POP, the symptom of pelvic pain is associated with the presence of defecatory symptoms.", "evidence": ["In women with POP, defecatory symptoms are significantly more common in women with pelvic pain including straining with bowel movement (OR 2.4, 95% CI 1.3, 4.6), sense of incomplete emptying (OR 4.4, 95% CI 2.3, 8.2), pain with bowel movement (OR 5.3, 95% CI 1.2, 23.0) and splinting with bowel movement (OR 3.8, 95% CI 2.0, 7.5)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: To investigate the significance of pelvic pain and its association with defecatory symptoms in women with pelvic organ prolapse (POP).\n\nSTUDY DESIGN: This is a cross sectional study of 248 women with stage II POP or greater. Women were stratified into \"pain\" and \"no-pain\" groups based on their response to a question on the Pelvic Floor Distress Inventory short form. Associations between patient demographics, exam findings and responses to validated questionnaires were evaluated.\n\nRESULTS: In women with POP, defecatory symptoms are significantly more common in women with pelvic pain including straining with bowel movement (OR 2.4, 95% CI 1.3, 4.6), sense of incomplete emptying (OR 4.4, 95% CI 2.3, 8.2), pain with bowel movement (OR 5.3, 95% CI 1.2, 23.0) and splinting with bowel movement (OR 3.8, 95% CI 2.0, 7.5).\n\nBiomedical Question:\nIs pelvic pain associated with defecatory symptoms in women with pelvic organ prolapse?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"In women with POP, the symptom of pelvic pain is associated with the presence of defecatory symptoms.\",\n  \"evidence\": [\n    \"In women with POP, defecatory symptoms are significantly more common in women with pelvic pain including straining with bowel movement (OR 2.4, 95% CI 1.3, 4.6), sense of incomplete emptying (OR 4.4, 95% CI 2.3, 8.2), pain with bowel movement (OR 5.3, 95% CI 1.2, 23.0) and splinting with bowel movement (OR 3.8, 95% CI 2.0, 7.5).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_21172844", "pmid": "21172844", "task": "evidence_qa", "question": "Does TDP-43 type confer a distinct pattern of atrophy in frontotemporal lobar degeneration?", "context": "OBJECTIVE: To determine whether TDP-43 type is associated with distinct patterns of brain atrophy on MRI in subjects with pathologically confirmed frontotemporal lobar degeneration (FTLD).\n\nMETHODS: In this case-control study, we identified all subjects with a pathologic diagnosis of FTLD with TDP-43 immunoreactive inclusions (FTLD-TDP) and at least one volumetric head MRI scan (n = 42). In each case we applied published criteria for subclassification of FTLD-TDP into FTLD-TDP types 1-3. Voxel-based morphometry was used to compare subjects with each of the different FTLD-TDP types to age- and gender-matched normal controls (n = 30). We also assessed different pathologic and genetic variants within, and across, the different types.\n\nRESULTS: Twenty-two subjects were classified as FTLD-TDP type 1, 9 as type 2, and 11 as type 3. We identified different patterns of atrophy across the types with type 1 showing frontotemporal and parietal atrophy, type 2 predominantly anterior temporal lobe atrophy, and type 3 predominantly posterior frontal atrophy. Within the FTLD-TDP type 1 group, those with a progranulin mutation had significantly more lateral temporal lobe atrophy than those without. All type 2 subjects were diagnosed with semantic dementia. Subjects with a pathologic diagnosis of FTLD with motor neuron degeneration had a similar pattern of atrophy, regardless of whether they were type 1 or type 3.", "ground_truth": {"decision": "yes", "answer": "Although there are different patterns of atrophy across the different FTLD-TDP types, it appears that genetic and pathologic factors may also affect the patterns of atrophy.", "evidence": ["Twenty-two subjects were classified as FTLD-TDP type 1, 9 as type 2, and 11 as type 3. We identified different patterns of atrophy across the types with type 1 showing frontotemporal and parietal atrophy, type 2 predominantly anterior temporal lobe atrophy, and type 3 predominantly posterior frontal atrophy. Within the FTLD-TDP type 1 group, those with a progranulin mutation had significantly more lateral temporal lobe atrophy than those without. All type 2 subjects were diagnosed with semantic dementia. Subjects with a pathologic diagnosis of FTLD with motor neuron degeneration had a similar pattern of atrophy, regardless of whether they were type 1 or type 3."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: To determine whether TDP-43 type is associated with distinct patterns of brain atrophy on MRI in subjects with pathologically confirmed frontotemporal lobar degeneration (FTLD).\n\nMETHODS: In this case-control study, we identified all subjects with a pathologic diagnosis of FTLD with TDP-43 immunoreactive inclusions (FTLD-TDP) and at least one volumetric head MRI scan (n = 42). In each case we applied published criteria for subclassification of FTLD-TDP into FTLD-TDP types 1-3. Voxel-based morphometry was used to compare subjects with each of the different FTLD-TDP types to age- and gender-matched normal controls (n = 30). We also assessed different pathologic and genetic variants within, and across, the different types.\n\nRESULTS: Twenty-two subjects were classified as FTLD-TDP type 1, 9 as type 2, and 11 as type 3. We identified different patterns of atrophy across the types with type 1 showing frontotemporal and parietal atrophy, type 2 predominantly anterior temporal lobe atrophy, and type 3 predominantly posterior frontal atrophy. Within the FTLD-TDP type 1 group, those with a progranulin mutation had significantly more lateral temporal lobe atrophy than those without. All type 2 subjects were diagnosed with semantic dementia. Subjects with a pathologic diagnosis of FTLD with motor neuron degeneration had a similar pattern of atrophy, regardless of whether they were type 1 or type 3.\n\nBiomedical Question:\nDoes TDP-43 type confer a distinct pattern of atrophy in frontotemporal lobar degeneration?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Although there are different patterns of atrophy across the different FTLD-TDP types, it appears that genetic and pathologic factors may also affect the patterns of atrophy.\",\n  \"evidence\": [\n    \"Twenty-two subjects were classified as FTLD-TDP type 1, 9 as type 2, and 11 as type 3. We identified different patterns of atrophy across the types with type 1 showing frontotemporal and parietal atrophy, type 2 predominantly anterior temporal lobe atrophy, and type 3 predominantly posterior frontal atrophy. Within the FTLD-TDP type 1 group, those with a progranulin mutation had significantly more lateral temporal lobe atrophy than those without. All type 2 subjects were diagnosed with semantic dementia. Subjects with a pathologic diagnosis of FTLD with motor neuron degeneration had a similar pattern of atrophy, regardless of whether they were type 1 or type 3.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_9140335", "pmid": "9140335", "task": "evidence_qa", "question": "Does fluoridation reduce the use of dental services among adults?", "context": "OBJECTIVES: The authors determine whether prevention influences the use of health services. Fluoridation's effect on restorative dental demand among 972 Washington state employees and spouses, aged 20 to 34 years, in two fluoridated communities and a nonfluoridated community was examined.\n\nMETHODS: At baseline, adults were interviewed by telephone, and oral assessments were conducted to measure personal characteristics, lifetime exposure to fluoridated water, oral disease, and the quality of restorations. Adults were followed for 2 years to measure dental demand from dental claims. Each adult's baseline and claims data were linked with provider and practice variables collected from the dentist who provided treatment.\n\nRESULTS: Relative to adults with no lifetime exposure to fluoridated water, adults drinking fluoridated water for half or more of their lives had less disease at baseline and a lower but nonsignificant probability of receiving a restoration in the follow-up period. In the 2-year follow-up period, however, more than half of the restorations were performed to replace fillings of satisfactory or ideal quality at baseline. When only teeth with decay and unsatisfactory fillings at baseline were considered, adults with high fluoridation exposure had a lower probability of receiving a restoration than adults with no exposure. Market effects also were detected in demand equations; relative to adults in the nonfluoridated community, adults residing in the fluoridated community with a large dentist supply received a greater number of restorations, suggesting potential supplier-induced demand from less disease and fewer patients.", "ground_truth": {"decision": "maybe", "answer": "Among adults aged 20 to 34 years with private dental insurance, fluoridation reduces oral disease but may or may not reduce use of restorative services, depending on dentists' clinical decisions.", "evidence": ["Relative to adults with no lifetime exposure to fluoridated water, adults drinking fluoridated water for half or more of their lives had less disease at baseline and a lower but nonsignificant probability of receiving a restoration in the follow-up period. In the 2-year follow-up period, however, more than half of the restorations were performed to replace fillings of satisfactory or ideal quality at baseline. When only teeth with decay and unsatisfactory fillings at baseline were considered, adults with high fluoridation exposure had a lower probability of receiving a restoration than adults with no exposure. Market effects also were detected in demand equations; relative to adults in the nonfluoridated community, adults residing in the fluoridated community with a large dentist supply received a greater number of restorations, suggesting potential supplier-induced demand from less disease and fewer patients."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVES: The authors determine whether prevention influences the use of health services. Fluoridation's effect on restorative dental demand among 972 Washington state employees and spouses, aged 20 to 34 years, in two fluoridated communities and a nonfluoridated community was examined.\n\nMETHODS: At baseline, adults were interviewed by telephone, and oral assessments were conducted to measure personal characteristics, lifetime exposure to fluoridated water, oral disease, and the quality of restorations. Adults were followed for 2 years to measure dental demand from dental claims. Each adult's baseline and claims data were linked with provider and practice variables collected from the dentist who provided treatment.\n\nRESULTS: Relative to adults with no lifetime exposure to fluoridated water, adults drinking fluoridated water for half or more of their lives had less disease at baseline and a lower but nonsignificant probability of receiving a restoration in the follow-up period. In the 2-year follow-up period, however, more than half of the restorations were performed to replace fillings of satisfactory or ideal quality at baseline. When only teeth with decay and unsatisfactory fillings at baseline were considered, adults with high fluoridation exposure had a lower probability of receiving a restoration than adults with no exposure. Market effects also were detected in demand equations; relative to adults in the nonfluoridated community, adults residing in the fluoridated community with a large dentist supply received a greater number of restorations, suggesting potential supplier-induced demand from less disease and fewer patients.\n\nBiomedical Question:\nDoes fluoridation reduce the use of dental services among adults?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"Among adults aged 20 to 34 years with private dental insurance, fluoridation reduces oral disease but may or may not reduce use of restorative services, depending on dentists' clinical decisions.\",\n  \"evidence\": [\n    \"Relative to adults with no lifetime exposure to fluoridated water, adults drinking fluoridated water for half or more of their lives had less disease at baseline and a lower but nonsignificant probability of receiving a restoration in the follow-up period. In the 2-year follow-up period, however, more than half of the restorations were performed to replace fillings of satisfactory or ideal quality at baseline. When only teeth with decay and unsatisfactory fillings at baseline were considered, adults with high fluoridation exposure had a lower probability of receiving a restoration than adults with no exposure. Market effects also were detected in demand equations; relative to adults in the nonfluoridated community, adults residing in the fluoridated community with a large dentist supply received a greater number of restorations, suggesting potential supplier-induced demand from less disease and fewer patients.\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_15151701", "pmid": "15151701", "task": "evidence_qa", "question": "Profiling quality of care: Is there a role for peer review?", "context": "BACKGROUND: We sought to develop a more reliable structured implicit chart review instrument for use in assessing the quality of care for chronic disease and to examine if ratings are more reliable for conditions in which the evidence base for practice is more developed.\n\nMETHODS: We conducted a reliability study in a cohort with patient records including both outpatient and inpatient care as the objects of measurement. We developed a structured implicit review instrument to assess the quality of care over one year of treatment. 12 reviewers conducted a total of 496 reviews of 70 patient records selected from 26 VA clinical sites in two regions of the country. Each patient had between one and four conditions specified as having a highly developed evidence base (diabetes and hypertension) or a less developed evidence base (chronic obstructive pulmonary disease or a collection of acute conditions). Multilevel analysis that accounts for the nested and cross-classified structure of the data was used to estimate the signal and noise components of the measurement of quality and the reliability of implicit review.\n\nRESULTS: For COPD and a collection of acute conditions the reliability of a single physician review was quite low (intra-class correlation = 0.16-0.26) but comparable to most previously published estimates for the use of this method in inpatient settings. However, for diabetes and hypertension the reliability is significantly higher at 0.46. The higher reliability is a result of the reviewers collectively being able to distinguish more differences in the quality of care between patients (p<0.007) and not due to less random noise or individual reviewer bias in the measurement. For these conditions the level of true quality (i.e. the rating of quality of care that would result from the full population of physician reviewers reviewing a record) varied from poor to good across patients.", "ground_truth": {"decision": "yes", "answer": "For conditions with a well-developed quality of care evidence base, such as hypertension and diabetes, a single structured implicit review to assess the quality of care over a period of time is moderately reliable. This method could be a reasonable complement or alternative to explicit indicator approaches for assessing and comparing quality of care. Structured implicit review, like explicit quality measures, must be used more cautiously for illnesses for which the evidence base is less well developed, such as COPD and acute, short-course illnesses.", "evidence": ["For COPD and a collection of acute conditions the reliability of a single physician review was quite low (intra-class correlation = 0.16-0.26) but comparable to most previously published estimates for the use of this method in inpatient settings. However, for diabetes and hypertension the reliability is significantly higher at 0.46. The higher reliability is a result of the reviewers collectively being able to distinguish more differences in the quality of care between patients (p<0.007) and not due to less random noise or individual reviewer bias in the measurement. For these conditions the level of true quality (i.e. the rating of quality of care that would result from the full population of physician reviewers reviewing a record) varied from poor to good across patients."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: We sought to develop a more reliable structured implicit chart review instrument for use in assessing the quality of care for chronic disease and to examine if ratings are more reliable for conditions in which the evidence base for practice is more developed.\n\nMETHODS: We conducted a reliability study in a cohort with patient records including both outpatient and inpatient care as the objects of measurement. We developed a structured implicit review instrument to assess the quality of care over one year of treatment. 12 reviewers conducted a total of 496 reviews of 70 patient records selected from 26 VA clinical sites in two regions of the country. Each patient had between one and four conditions specified as having a highly developed evidence base (diabetes and hypertension) or a less developed evidence base (chronic obstructive pulmonary disease or a collection of acute conditions). Multilevel analysis that accounts for the nested and cross-classified structure of the data was used to estimate the signal and noise components of the measurement of quality and the reliability of implicit review.\n\nRESULTS: For COPD and a collection of acute conditions the reliability of a single physician review was quite low (intra-class correlation = 0.16-0.26) but comparable to most previously published estimates for the use of this method in inpatient settings. However, for diabetes and hypertension the reliability is significantly higher at 0.46. The higher reliability is a result of the reviewers collectively being able to distinguish more differences in the quality of care between patients (p<0.007) and not due to less random noise or individual reviewer bias in the measurement. For these conditions the level of true quality (i.e. the rating of quality of care that would result from the full population of physician reviewers reviewing a record) varied from poor to good across patients.\n\nBiomedical Question:\nProfiling quality of care: Is there a role for peer review?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"For conditions with a well-developed quality of care evidence base, such as hypertension and diabetes, a single structured implicit review to assess the quality of care over a period of time is moderately reliable. This method could be a reasonable complement or alternative to explicit indicator approaches for assessing and comparing quality of care. Structured implicit review, like explicit quality measures, must be used more cautiously for illnesses for which the evidence base is less well developed, such as COPD and acute, short-course illnesses.\",\n  \"evidence\": [\n    \"For COPD and a collection of acute conditions the reliability of a single physician review was quite low (intra-class correlation = 0.16-0.26) but comparable to most previously published estimates for the use of this method in inpatient settings. However, for diabetes and hypertension the reliability is significantly higher at 0.46. The higher reliability is a result of the reviewers collectively being able to distinguish more differences in the quality of care between patients (p<0.007) and not due to less random noise or individual reviewer bias in the measurement. For these conditions the level of true quality (i.e. the rating of quality of care that would result from the full population of physician reviewers reviewing a record) varied from poor to good across patients.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_14968373", "pmid": "14968373", "task": "evidence_qa", "question": "Can CT predict the level of CSF block in tuberculous hydrocephalus?", "context": "INTRODUCTION: Treatment of obstructive hydrocephalus in children with tuberculous meningitis (TBM) depends on the level of the cerebrospinal fluid (CSF) block. Air-encephalography is regarded as the gold standard for differentiating communicating and non-communicating hydrocephalus. Since air-encephalography involves a lumbar puncture, it carries the risk of cerebral herniation. AIM. The aim of this study was to determine whether communicating and non-communicating hydrocephalus in TBM can be differentiated by means of cranial computerised tomography (CT).\n\nMETHODS: A number of CT indices were measured in 50 children with communicating and 34 children with non-communicating hydrocephalus according to air-encephalographic findings.\n\nRESULTS: The only CT finding that correlated with the type of hydrocephalus was the shape of the third ventricle. Significantly more children with non-communicating hydrocephalus had a rounded third ventricle than those with communicating hydrocephalus.", "ground_truth": {"decision": "yes", "answer": "CT is therefore not useful in determining the level of CSF block in TBM. Air-encephalography remains the most reliable way of determining the level of CSF obstruction.", "evidence": ["The only CT finding that correlated with the type of hydrocephalus was the shape of the third ventricle. Significantly more children with non-communicating hydrocephalus had a rounded third ventricle than those with communicating hydrocephalus."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nINTRODUCTION: Treatment of obstructive hydrocephalus in children with tuberculous meningitis (TBM) depends on the level of the cerebrospinal fluid (CSF) block. Air-encephalography is regarded as the gold standard for differentiating communicating and non-communicating hydrocephalus. Since air-encephalography involves a lumbar puncture, it carries the risk of cerebral herniation. AIM. The aim of this study was to determine whether communicating and non-communicating hydrocephalus in TBM can be differentiated by means of cranial computerised tomography (CT).\n\nMETHODS: A number of CT indices were measured in 50 children with communicating and 34 children with non-communicating hydrocephalus according to air-encephalographic findings.\n\nRESULTS: The only CT finding that correlated with the type of hydrocephalus was the shape of the third ventricle. Significantly more children with non-communicating hydrocephalus had a rounded third ventricle than those with communicating hydrocephalus.\n\nBiomedical Question:\nCan CT predict the level of CSF block in tuberculous hydrocephalus?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"CT is therefore not useful in determining the level of CSF block in TBM. Air-encephalography remains the most reliable way of determining the level of CSF obstruction.\",\n  \"evidence\": [\n    \"The only CT finding that correlated with the type of hydrocephalus was the shape of the third ventricle. Significantly more children with non-communicating hydrocephalus had a rounded third ventricle than those with communicating hydrocephalus.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_25070942", "pmid": "25070942", "task": "evidence_qa", "question": "Can mass drug administration lead to the sustainable control of schistosomiasis?", "context": "BACKGROUND: In the Philippines, the current national control strategy for schistosomiasis is annual mass drug administration (MDA) with 40 mg/kg of praziquantel in all schistosomiasis-endemic villages with a prevalence ≥10%.\n\nMETHODS: A cross-sectional survey of schistosomiasis was conducted in 2012 on 18 221 individuals residing in 22 schistosomiasis-endemic villages in the province of Northern Samar. The prevalence of schistosomiasis, intensity of Schistosoma infection, and morbidity of disease were assessed.\n\nRESULTS: Despite an active schistosomiasis-control program in Northern Samar for>30 years, which included a MDA campaign in the last 5 years, the mean prevalence of schistosomiasis among 10 435 evaluated subjects was 27.1% (95% confidence interval [CI], 26.3%-28.0%), and the geometric mean intensity of infection among 2832 evaluated subjects was 17.2 eggs per gram of feces (95% CI, 16.4-18.1). Ultrasonography revealed high levels of schistosomiasis-induced morbidity in the schistosomiasis-endemic communities. Left lobe liver enlargement (≥70 mm) was evident in 89.3% of subjects. Twenty-five percent of the study population had grade II/III liver parenchyma fibrosis, and 13.3% had splenomegaly (≥100 mm).", "ground_truth": {"decision": "no", "answer": "MDA on its own was insufficient to control the prevalence of schistosomiasis, intensity of Schistosoma infection, or morbidity of the disease. Alternative control measures will be needed to complement the existing national MDA program.", "evidence": ["Despite an active schistosomiasis-control program in Northern Samar for>30 years, which included a MDA campaign in the last 5 years, the mean prevalence of schistosomiasis among 10 435 evaluated subjects was 27.1% (95% confidence interval [CI], 26.3%-28.0%), and the geometric mean intensity of infection among 2832 evaluated subjects was 17.2 eggs per gram of feces (95% CI, 16.4-18.1). Ultrasonography revealed high levels of schistosomiasis-induced morbidity in the schistosomiasis-endemic communities. Left lobe liver enlargement (≥70 mm) was evident in 89.3% of subjects. Twenty-five percent of the study population had grade II/III liver parenchyma fibrosis, and 13.3% had splenomegaly (≥100 mm)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: In the Philippines, the current national control strategy for schistosomiasis is annual mass drug administration (MDA) with 40 mg/kg of praziquantel in all schistosomiasis-endemic villages with a prevalence ≥10%.\n\nMETHODS: A cross-sectional survey of schistosomiasis was conducted in 2012 on 18 221 individuals residing in 22 schistosomiasis-endemic villages in the province of Northern Samar. The prevalence of schistosomiasis, intensity of Schistosoma infection, and morbidity of disease were assessed.\n\nRESULTS: Despite an active schistosomiasis-control program in Northern Samar for>30 years, which included a MDA campaign in the last 5 years, the mean prevalence of schistosomiasis among 10 435 evaluated subjects was 27.1% (95% confidence interval [CI], 26.3%-28.0%), and the geometric mean intensity of infection among 2832 evaluated subjects was 17.2 eggs per gram of feces (95% CI, 16.4-18.1). Ultrasonography revealed high levels of schistosomiasis-induced morbidity in the schistosomiasis-endemic communities. Left lobe liver enlargement (≥70 mm) was evident in 89.3% of subjects. Twenty-five percent of the study population had grade II/III liver parenchyma fibrosis, and 13.3% had splenomegaly (≥100 mm).\n\nBiomedical Question:\nCan mass drug administration lead to the sustainable control of schistosomiasis?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"MDA on its own was insufficient to control the prevalence of schistosomiasis, intensity of Schistosoma infection, or morbidity of the disease. Alternative control measures will be needed to complement the existing national MDA program.\",\n  \"evidence\": [\n    \"Despite an active schistosomiasis-control program in Northern Samar for>30 years, which included a MDA campaign in the last 5 years, the mean prevalence of schistosomiasis among 10 435 evaluated subjects was 27.1% (95% confidence interval [CI], 26.3%-28.0%), and the geometric mean intensity of infection among 2832 evaluated subjects was 17.2 eggs per gram of feces (95% CI, 16.4-18.1). Ultrasonography revealed high levels of schistosomiasis-induced morbidity in the schistosomiasis-endemic communities. Left lobe liver enlargement (≥70 mm) was evident in 89.3% of subjects. Twenty-five percent of the study population had grade II/III liver parenchyma fibrosis, and 13.3% had splenomegaly (≥100 mm).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_16968876", "pmid": "16968876", "task": "evidence_qa", "question": "Is a patient's self-reported health-related quality of life a prognostic factor for survival in non-small-cell lung cancer patients?", "context": "BACKGROUND: The aim of this prognostic factor analysis was to investigate if a patient's self-reported health-related quality of life (HRQOL) provided independent prognostic information for survival in non-small cell lung cancer (NSCLC) patients.\n\nPATIENTS AND METHODS: Pretreatment HRQOL was measured in 391 advanced NSCLC patients using the EORTC QLQ-C30 and the EORTC Lung Cancer module (QLQ-LC13). The Cox proportional hazards regression model was used for both univariate and multivariate analyses of survival. In addition, a bootstrap validation technique was used to assess the stability of the outcomes.\n\nRESULTS: The final multivariate Cox regression model retained four parameters as independent prognostic factors for survival: male gender with a hazard ratio (HR) = 1.32 (95% CI 1.03-1.69; P = 0.03); performance status (0 to 1 versus 2) with HR = 1.63 (95% CI 1.04-2.54; P = 0.032); patient's self-reported score of pain with HR= 1.11 (95% CI 1.07-1.16; P<0.001) and dysphagia with HR = 1.12 (95% CI 1.04-1.21; P = 0.003). A 10-point shift worse in the scale measuring pain and dysphagia translated into an 11% and 12% increased in the likelihood of death respectively. A risk group categorization was also developed.", "ground_truth": {"decision": "maybe", "answer": "The results suggest that patients' self-reported HRQOL provide independent prognostic information for survival. This finding supports the collection of such data in routine clinical practice.", "evidence": ["The final multivariate Cox regression model retained four parameters as independent prognostic factors for survival: male gender with a hazard ratio (HR) = 1.32 (95% CI 1.03-1.69; P = 0.03); performance status (0 to 1 versus 2) with HR = 1.63 (95% CI 1.04-2.54; P = 0.032); patient's self-reported score of pain with HR= 1.11 (95% CI 1.07-1.16; P<0.001) and dysphagia with HR = 1.12 (95% CI 1.04-1.21; P = 0.003). A 10-point shift worse in the scale measuring pain and dysphagia translated into an 11% and 12% increased in the likelihood of death respectively. A risk group categorization was also developed."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: The aim of this prognostic factor analysis was to investigate if a patient's self-reported health-related quality of life (HRQOL) provided independent prognostic information for survival in non-small cell lung cancer (NSCLC) patients.\n\nPATIENTS AND METHODS: Pretreatment HRQOL was measured in 391 advanced NSCLC patients using the EORTC QLQ-C30 and the EORTC Lung Cancer module (QLQ-LC13). The Cox proportional hazards regression model was used for both univariate and multivariate analyses of survival. In addition, a bootstrap validation technique was used to assess the stability of the outcomes.\n\nRESULTS: The final multivariate Cox regression model retained four parameters as independent prognostic factors for survival: male gender with a hazard ratio (HR) = 1.32 (95% CI 1.03-1.69; P = 0.03); performance status (0 to 1 versus 2) with HR = 1.63 (95% CI 1.04-2.54; P = 0.032); patient's self-reported score of pain with HR= 1.11 (95% CI 1.07-1.16; P<0.001) and dysphagia with HR = 1.12 (95% CI 1.04-1.21; P = 0.003). A 10-point shift worse in the scale measuring pain and dysphagia translated into an 11% and 12% increased in the likelihood of death respectively. A risk group categorization was also developed.\n\nBiomedical Question:\nIs a patient's self-reported health-related quality of life a prognostic factor for survival in non-small-cell lung cancer patients?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"The results suggest that patients' self-reported HRQOL provide independent prognostic information for survival. This finding supports the collection of such data in routine clinical practice.\",\n  \"evidence\": [\n    \"The final multivariate Cox regression model retained four parameters as independent prognostic factors for survival: male gender with a hazard ratio (HR) = 1.32 (95% CI 1.03-1.69; P = 0.03); performance status (0 to 1 versus 2) with HR = 1.63 (95% CI 1.04-2.54; P = 0.032); patient's self-reported score of pain with HR= 1.11 (95% CI 1.07-1.16; P<0.001) and dysphagia with HR = 1.12 (95% CI 1.04-1.21; P = 0.003). A 10-point shift worse in the scale measuring pain and dysphagia translated into an 11% and 12% increased in the likelihood of death respectively. A risk group categorization was also developed.\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_23448747", "pmid": "23448747", "task": "evidence_qa", "question": "Do older adults with cancer fall more often?", "context": "OBJECTIVES: To examine whether a history of cancer increased the likelihood of a fall in community-dwelling older adults, and if cancer type, stage, or time since diagnosis increased falls.\n\nDESIGN: A longitudinal, retrospective, cohort study.\n\nSETTING: A home- and community-based waiver program in Michigan.\n\nSAMPLE: 862 older adults aged 65 years or older with cancer compared to 8,617 older adults without cancer using data from the Minimum Data Set-Home Care and Michigan cancer registry.\n\nMETHODS: Reports of falls were examined for 90-180 days. Generalized estimating equations were used to compare differences between the groups.\n\nMAIN RESEARCH VARIABLES: Cancer, falls, patient characteristics, comorbidities, medications, pain, weight loss, vision, memory recall, and activities, as well as cancer type, stage, and time since diagnosis.\n\nFINDINGS: A fall occurred at a rate of 33% in older adults with cancer compared to 29% without cancer (p<0.00). Those with a history of cancer were more likely to fall than those without cancer (adjusted odds ratio 1.16; 95% confidence interval [1.02, 1.33]; p = 0.03). No differences in fall rates were determined by cancer type or stage, and the odds of a fall did not increase when adding time since cancer diagnosis.", "ground_truth": {"decision": "yes", "answer": "The fall rate was higher in older adults with cancer than in older adults without cancer.", "evidence": ["A fall occurred at a rate of 33% in older adults with cancer compared to 29% without cancer (p<0.00). Those with a history of cancer were more likely to fall than those without cancer (adjusted odds ratio 1.16; 95% confidence interval [1.02, 1.33]; p = 0.03). No differences in fall rates were determined by cancer type or stage, and the odds of a fall did not increase when adding time since cancer diagnosis."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVES: To examine whether a history of cancer increased the likelihood of a fall in community-dwelling older adults, and if cancer type, stage, or time since diagnosis increased falls.\n\nDESIGN: A longitudinal, retrospective, cohort study.\n\nSETTING: A home- and community-based waiver program in Michigan.\n\nSAMPLE: 862 older adults aged 65 years or older with cancer compared to 8,617 older adults without cancer using data from the Minimum Data Set-Home Care and Michigan cancer registry.\n\nMETHODS: Reports of falls were examined for 90-180 days. Generalized estimating equations were used to compare differences between the groups.\n\nMAIN RESEARCH VARIABLES: Cancer, falls, patient characteristics, comorbidities, medications, pain, weight loss, vision, memory recall, and activities, as well as cancer type, stage, and time since diagnosis.\n\nFINDINGS: A fall occurred at a rate of 33% in older adults with cancer compared to 29% without cancer (p<0.00). Those with a history of cancer were more likely to fall than those without cancer (adjusted odds ratio 1.16; 95% confidence interval [1.02, 1.33]; p = 0.03). No differences in fall rates were determined by cancer type or stage, and the odds of a fall did not increase when adding time since cancer diagnosis.\n\nBiomedical Question:\nDo older adults with cancer fall more often?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"The fall rate was higher in older adults with cancer than in older adults without cancer.\",\n  \"evidence\": [\n    \"A fall occurred at a rate of 33% in older adults with cancer compared to 29% without cancer (p<0.00). Those with a history of cancer were more likely to fall than those without cancer (adjusted odds ratio 1.16; 95% confidence interval [1.02, 1.33]; p = 0.03). No differences in fall rates were determined by cancer type or stage, and the odds of a fall did not increase when adding time since cancer diagnosis.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_12913878", "pmid": "12913878", "task": "evidence_qa", "question": "Locoregional opening of the rodent blood-brain barrier for paclitaxel using Nd:YAG laser-induced thermo therapy: a new concept of adjuvant glioma therapy?", "context": "BACKGROUND AND OBJECTIVES: Nd:YAG laser-induced thermo therapy (LITT) of rat brains is associated with blood-brain barrier (BBB) permeability changes. We address the question of whether LITT-induced locoregional disruption of the BBB could possibly allow a locoregional passage of chemotherapeutic agents into brain tissue to treat malignant glioma.STUDY DESIGN/\n\nMATERIALS AND METHODS: CD Fischer rats were subject to LITT of the left forebrain. Disruption of the BBB was analyzed using Evans blue and immunohistochemistry (IH). Animals were perfused with paclitaxel, and high-pressure liquid chromatography (HPLC) was employed to analyze the content of paclitaxel in brain and plasma samples.\n\nRESULTS: LITT induces an opening of the BBB as demonstrated by locoregional extravasation of Evans blue, C3C, fibrinogen, and IgM. HPLC proved the passage of paclitaxel across the disrupted BBB.", "ground_truth": {"decision": "yes", "answer": "LITT induces a locoregional passage of chemotherapeutic agents into the brain tissue. This is of potential interest for the treatment of brain tumors.", "evidence": ["LITT induces an opening of the BBB as demonstrated by locoregional extravasation of Evans blue, C3C, fibrinogen, and IgM. HPLC proved the passage of paclitaxel across the disrupted BBB."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND AND OBJECTIVES: Nd:YAG laser-induced thermo therapy (LITT) of rat brains is associated with blood-brain barrier (BBB) permeability changes. We address the question of whether LITT-induced locoregional disruption of the BBB could possibly allow a locoregional passage of chemotherapeutic agents into brain tissue to treat malignant glioma.STUDY DESIGN/\n\nMATERIALS AND METHODS: CD Fischer rats were subject to LITT of the left forebrain. Disruption of the BBB was analyzed using Evans blue and immunohistochemistry (IH). Animals were perfused with paclitaxel, and high-pressure liquid chromatography (HPLC) was employed to analyze the content of paclitaxel in brain and plasma samples.\n\nRESULTS: LITT induces an opening of the BBB as demonstrated by locoregional extravasation of Evans blue, C3C, fibrinogen, and IgM. HPLC proved the passage of paclitaxel across the disrupted BBB.\n\nBiomedical Question:\nLocoregional opening of the rodent blood-brain barrier for paclitaxel using Nd:YAG laser-induced thermo therapy: a new concept of adjuvant glioma therapy?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"LITT induces a locoregional passage of chemotherapeutic agents into the brain tissue. This is of potential interest for the treatment of brain tumors.\",\n  \"evidence\": [\n    \"LITT induces an opening of the BBB as demonstrated by locoregional extravasation of Evans blue, C3C, fibrinogen, and IgM. HPLC proved the passage of paclitaxel across the disrupted BBB.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_23497210", "pmid": "23497210", "task": "evidence_qa", "question": "Are women with major depression in pregnancy identifiable in population health data?", "context": "BACKGROUND: Although record linkage of routinely collected health datasets is a valuable research resource, most datasets are established for administrative purposes and not for health outcomes research. In order for meaningful results to be extrapolated to specific populations, the limitations of the data and linkage methodology need to be investigated and clarified. It is the objective of this study to investigate the differences in ascertainment which may arise between a hospital admission dataset and a dispensing claims dataset, using major depression in pregnancy as an example. The safe use of antidepressants in pregnancy is an ongoing issue for clinicians with around 10% of pregnant women suffer from depression. As the birth admission will be the first admission to hospital during their pregnancy for most women, their use of antidepressants, or their depressive condition, may not be revealed to the attending hospital clinicians. This may result in adverse outcomes for the mother and infant.\n\nMETHODS: Population-based de-identified data were provided from the Western Australian Data Linkage System linking the administrative health records of women with a delivery to related records from the Midwives' Notification System, the Hospital Morbidity Data System and the national Pharmaceutical Benefits Scheme dataset. The women with depression during their pregnancy were ascertained in two ways: women with dispensing records relating to dispensed antidepressant medicines with an WHO ATC code to the 3rd level, pharmacological subgroup, 'N06A Antidepressants'; and, women with any hospital admission during pregnancy, including the birth admission, if a comorbidity was recorded relating to depression.\n\nRESULTS: From 2002 to 2005, there were 96698 births in WA. At least one antidepressant was dispensed to 4485 (4.6%) pregnant women. There were 3010 (3.1%) women with a comorbidity related to depression recorded on their delivery admission, or other admission to hospital during pregnancy. There were a total of 7495 pregnancies identified by either set of records. Using data linkage, we determined that these records represented 6596 individual pregnancies. Only 899 pregnancies were found in both groups (13.6% of all cases). 80% of women dispensed an antidepressant did not have depression recorded as a comorbidity on their hospital records. A simple capture-recapture calculation suggests the prevalence of depression in this population of pregnant women to be around 16%.", "ground_truth": {"decision": "no", "answer": "No single data source is likely to provide a complete health profile for an individual. For women with depression in pregnancy and dispensed antidepressants, the hospital admission data do not adequately capture all cases.", "evidence": ["From 2002 to 2005, there were 96698 births in WA. At least one antidepressant was dispensed to 4485 (4.6%) pregnant women. There were 3010 (3.1%) women with a comorbidity related to depression recorded on their delivery admission, or other admission to hospital during pregnancy. There were a total of 7495 pregnancies identified by either set of records. Using data linkage, we determined that these records represented 6596 individual pregnancies. Only 899 pregnancies were found in both groups (13.6% of all cases). 80% of women dispensed an antidepressant did not have depression recorded as a comorbidity on their hospital records. A simple capture-recapture calculation suggests the prevalence of depression in this population of pregnant women to be around 16%."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Although record linkage of routinely collected health datasets is a valuable research resource, most datasets are established for administrative purposes and not for health outcomes research. In order for meaningful results to be extrapolated to specific populations, the limitations of the data and linkage methodology need to be investigated and clarified. It is the objective of this study to investigate the differences in ascertainment which may arise between a hospital admission dataset and a dispensing claims dataset, using major depression in pregnancy as an example. The safe use of antidepressants in pregnancy is an ongoing issue for clinicians with around 10% of pregnant women suffer from depression. As the birth admission will be the first admission to hospital during their pregnancy for most women, their use of antidepressants, or their depressive condition, may not be revealed to the attending hospital clinicians. This may result in adverse outcomes for the mother and infant.\n\nMETHODS: Population-based de-identified data were provided from the Western Australian Data Linkage System linking the administrative health records of women with a delivery to related records from the Midwives' Notification System, the Hospital Morbidity Data System and the national Pharmaceutical Benefits Scheme dataset. The women with depression during their pregnancy were ascertained in two ways: women with dispensing records relating to dispensed antidepressant medicines with an WHO ATC code to the 3rd level, pharmacological subgroup, 'N06A Antidepressants'; and, women with any hospital admission during pregnancy, including the birth admission, if a comorbidity was recorded relating to depression.\n\nRESULTS: From 2002 to 2005, there were 96698 births in WA. At least one antidepressant was dispensed to 4485 (4.6%) pregnant women. There were 3010 (3.1%) women with a comorbidity related to depression recorded on their delivery admission, or other admission to hospital during pregnancy. There were a total of 7495 pregnancies identified by either set of records. Using data linkage, we determined that these records represented 6596 individual pregnancies. Only 899 pregnancies were found in both groups (13.6% of all cases). 80% of women dispensed an antidepressant did not have depression recorded as a comorbidity on their hospital records. A simple capture-recapture calculation suggests the prevalence of depression in this population of pregnant women to be around 16%.\n\nBiomedical Question:\nAre women with major depression in pregnancy identifiable in population health data?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"No single data source is likely to provide a complete health profile for an individual. For women with depression in pregnancy and dispensed antidepressants, the hospital admission data do not adequately capture all cases.\",\n  \"evidence\": [\n    \"From 2002 to 2005, there were 96698 births in WA. At least one antidepressant was dispensed to 4485 (4.6%) pregnant women. There were 3010 (3.1%) women with a comorbidity related to depression recorded on their delivery admission, or other admission to hospital during pregnancy. There were a total of 7495 pregnancies identified by either set of records. Using data linkage, we determined that these records represented 6596 individual pregnancies. Only 899 pregnancies were found in both groups (13.6% of all cases). 80% of women dispensed an antidepressant did not have depression recorded as a comorbidity on their hospital records. A simple capture-recapture calculation suggests the prevalence of depression in this population of pregnant women to be around 16%.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_17916877", "pmid": "17916877", "task": "evidence_qa", "question": "Intravenous administration of metoclopramide by 2 min bolus vs 15 min infusion: does it affect the improvement of headache while reducing the side effects?", "context": "OBJECTIVE: To determine the therapeutic effect (alleviation of vascular type headache) and side effects of a slow intravenous metoclopramide infusion over 15 min compared with those effects of a bolus intravenous metoclopramide infusion over 2 min in the treatment of patients with recent onset vascular type headache.\n\nMATERIAL AND METHODS: All adults treated with metoclopramide for vascular type headache were eligible for entry into this clinical randomised double blinded trial. This study compared the effects of two different rates of intravenous infusion of metoclopramide over a period of 13 months at a university hospital emergency department. During the trial, side effects and headache scores were recorded at baseline (0 min), and then at 5, 15, 30 and 60 min. Repeated measures analysis of variance was used to compare the medication's efficacy and side effects.\n\nRESULTS: A total of 120 patients presenting to the emergency department met the inclusion criteria. Of these, 62 patients (51.7%) were given 10 mg metoclopramide as a slow intravenous infusion over 15 min (SIG group) and 58 patients (48.3%) were given 10 mg metoclopramide intravenous bolus infusion over 2 min (BIG group). 17 of the 58 patients in the BIG group (29.3%) and 4 of the 62 patients (6.5%) in the SIG group had akathisia (p = 0.001). There were no significant differences between the BIG and SIG groups in terms of mean headache scores (p = 0.34) and no adverse reactions in the study period. Metoclopramide successfully relieved the headache symptom(s) of patients in both the BIG and SIG groups.", "ground_truth": {"decision": "yes", "answer": "Slowing the infusion rate of metoclopramide is an effective strategy for the improvement of headache and reducing the incidence of akathisia in patients with vascular type headache.", "evidence": ["A total of 120 patients presenting to the emergency department met the inclusion criteria. Of these, 62 patients (51.7%) were given 10 mg metoclopramide as a slow intravenous infusion over 15 min (SIG group) and 58 patients (48.3%) were given 10 mg metoclopramide intravenous bolus infusion over 2 min (BIG group). 17 of the 58 patients in the BIG group (29.3%) and 4 of the 62 patients (6.5%) in the SIG group had akathisia (p = 0.001). There were no significant differences between the BIG and SIG groups in terms of mean headache scores (p = 0.34) and no adverse reactions in the study period. Metoclopramide successfully relieved the headache symptom(s) of patients in both the BIG and SIG groups."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: To determine the therapeutic effect (alleviation of vascular type headache) and side effects of a slow intravenous metoclopramide infusion over 15 min compared with those effects of a bolus intravenous metoclopramide infusion over 2 min in the treatment of patients with recent onset vascular type headache.\n\nMATERIAL AND METHODS: All adults treated with metoclopramide for vascular type headache were eligible for entry into this clinical randomised double blinded trial. This study compared the effects of two different rates of intravenous infusion of metoclopramide over a period of 13 months at a university hospital emergency department. During the trial, side effects and headache scores were recorded at baseline (0 min), and then at 5, 15, 30 and 60 min. Repeated measures analysis of variance was used to compare the medication's efficacy and side effects.\n\nRESULTS: A total of 120 patients presenting to the emergency department met the inclusion criteria. Of these, 62 patients (51.7%) were given 10 mg metoclopramide as a slow intravenous infusion over 15 min (SIG group) and 58 patients (48.3%) were given 10 mg metoclopramide intravenous bolus infusion over 2 min (BIG group). 17 of the 58 patients in the BIG group (29.3%) and 4 of the 62 patients (6.5%) in the SIG group had akathisia (p = 0.001). There were no significant differences between the BIG and SIG groups in terms of mean headache scores (p = 0.34) and no adverse reactions in the study period. Metoclopramide successfully relieved the headache symptom(s) of patients in both the BIG and SIG groups.\n\nBiomedical Question:\nIntravenous administration of metoclopramide by 2 min bolus vs 15 min infusion: does it affect the improvement of headache while reducing the side effects?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Slowing the infusion rate of metoclopramide is an effective strategy for the improvement of headache and reducing the incidence of akathisia in patients with vascular type headache.\",\n  \"evidence\": [\n    \"A total of 120 patients presenting to the emergency department met the inclusion criteria. Of these, 62 patients (51.7%) were given 10 mg metoclopramide as a slow intravenous infusion over 15 min (SIG group) and 58 patients (48.3%) were given 10 mg metoclopramide intravenous bolus infusion over 2 min (BIG group). 17 of the 58 patients in the BIG group (29.3%) and 4 of the 62 patients (6.5%) in the SIG group had akathisia (p = 0.001). There were no significant differences between the BIG and SIG groups in terms of mean headache scores (p = 0.34) and no adverse reactions in the study period. Metoclopramide successfully relieved the headache symptom(s) of patients in both the BIG and SIG groups.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_23495128", "pmid": "23495128", "task": "evidence_qa", "question": "The colour of pain: can patients use colour to describe osteoarthritis pain?", "context": "OBJECTIVE: The aim of the present study was to explore patients' views on the acceptability and feasibility of using colour to describe osteoarthritis (OA) pain, and whether colour could be used to communicate pain to healthcare professionals.\n\nMETHODS: Six group interviews were conducted with 17 patients with knee OA. Discussion topics included first impressions about using colour to describe pain, whether participants could associate their pain with colour, how colours related to changes to intensity and different pain qualities, and whether they could envisage using colour to describe pain to healthcare professionals.\n\nRESULTS: The group interviews indicated that, although the idea of using colour was generally acceptable, it did not suit all participants as a way of describing their pain. The majority of participants chose red to describe high-intensity pain; the reasons given were because red symbolized inflammation, fire, anger and the stop signal in a traffic light system. Colours used to describe the absence of pain were chosen because of their association with positive emotional feelings, such as purity, calmness and happiness. A range of colours was chosen to represent changes in pain intensity. Aching pain was consistently identified as being associated with colours such as grey or black, whereas sharp pain was described using a wider selection of colours. The majority of participants thought that they would be able to use colour to describe their pain to healthcare professionals, although issues around the interpretability and standardization of colour were raised.", "ground_truth": {"decision": "yes", "answer": "For some patients, using colour to describe their pain experience may be a useful tool to improve doctor-patient communication.", "evidence": ["The group interviews indicated that, although the idea of using colour was generally acceptable, it did not suit all participants as a way of describing their pain. The majority of participants chose red to describe high-intensity pain; the reasons given were because red symbolized inflammation, fire, anger and the stop signal in a traffic light system. Colours used to describe the absence of pain were chosen because of their association with positive emotional feelings, such as purity, calmness and happiness. A range of colours was chosen to represent changes in pain intensity. Aching pain was consistently identified as being associated with colours such as grey or black, whereas sharp pain was described using a wider selection of colours. The majority of participants thought that they would be able to use colour to describe their pain to healthcare professionals, although issues around the interpretability and standardization of colour were raised."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: The aim of the present study was to explore patients' views on the acceptability and feasibility of using colour to describe osteoarthritis (OA) pain, and whether colour could be used to communicate pain to healthcare professionals.\n\nMETHODS: Six group interviews were conducted with 17 patients with knee OA. Discussion topics included first impressions about using colour to describe pain, whether participants could associate their pain with colour, how colours related to changes to intensity and different pain qualities, and whether they could envisage using colour to describe pain to healthcare professionals.\n\nRESULTS: The group interviews indicated that, although the idea of using colour was generally acceptable, it did not suit all participants as a way of describing their pain. The majority of participants chose red to describe high-intensity pain; the reasons given were because red symbolized inflammation, fire, anger and the stop signal in a traffic light system. Colours used to describe the absence of pain were chosen because of their association with positive emotional feelings, such as purity, calmness and happiness. A range of colours was chosen to represent changes in pain intensity. Aching pain was consistently identified as being associated with colours such as grey or black, whereas sharp pain was described using a wider selection of colours. The majority of participants thought that they would be able to use colour to describe their pain to healthcare professionals, although issues around the interpretability and standardization of colour were raised.\n\nBiomedical Question:\nThe colour of pain: can patients use colour to describe osteoarthritis pain?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"For some patients, using colour to describe their pain experience may be a useful tool to improve doctor-patient communication.\",\n  \"evidence\": [\n    \"The group interviews indicated that, although the idea of using colour was generally acceptable, it did not suit all participants as a way of describing their pain. The majority of participants chose red to describe high-intensity pain; the reasons given were because red symbolized inflammation, fire, anger and the stop signal in a traffic light system. Colours used to describe the absence of pain were chosen because of their association with positive emotional feelings, such as purity, calmness and happiness. A range of colours was chosen to represent changes in pain intensity. Aching pain was consistently identified as being associated with colours such as grey or black, whereas sharp pain was described using a wider selection of colours. The majority of participants thought that they would be able to use colour to describe their pain to healthcare professionals, although issues around the interpretability and standardization of colour were raised.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_12947068", "pmid": "12947068", "task": "evidence_qa", "question": "Do older men benefit from curative therapy of localized prostate cancer?", "context": "PURPOSE: Prior decision-analytic models are based on outdated or suboptimal efficacy, patient preference, and comorbidity data. We estimated life expectancy (LE) and quality-adjusted life expectancy (QALE) associated with available treatments for localized prostate cancer in men aged>/= 65 years, adjusting for Gleason score, patient preferences, and comorbidity.\n\nMETHODS: We evaluated three treatments, using a decision-analytic Markov model: radical prostatectomy (RP), external beam radiotherapy (EBRT), and watchful waiting (WW). Rates of treatment complications and pretreatment incontinence and impotence were derived from published studies. We estimated treatment efficacy using three data sources: cancer registry cohort data, pooled case series, and modern radiotherapy studies. Utilities were obtained from 141 prostate cancer patients and from published studies.\n\nRESULTS: For men with well-differentiated tumors and few comorbidities, potentially curative therapy (RP or EBRT) prolonged LE up to age 75 years but did not improve QALE at any age. For moderately differentiated cancers, potentially curative therapy resulted in LE and QALE gains up to age 75 years. For poorly differentiated disease, potentially curative therapy resulted in LE and QALE gains up to age 80 years. Benefits of potentially curative therapy were restricted to men with no worse than mild comorbidity. When cohort and pooled case series data were used, RP was preferred over EBRT in all groups but was comparable to modern radiotherapy.", "ground_truth": {"decision": "yes", "answer": "Potentially curative therapy results in significantly improved LE and QALE for older men with few comorbidities and moderately or poorly differentiated localized prostate cancer. Age should not be a barrier to treatment in this group.", "evidence": ["For men with well-differentiated tumors and few comorbidities, potentially curative therapy (RP or EBRT) prolonged LE up to age 75 years but did not improve QALE at any age. For moderately differentiated cancers, potentially curative therapy resulted in LE and QALE gains up to age 75 years. For poorly differentiated disease, potentially curative therapy resulted in LE and QALE gains up to age 80 years. Benefits of potentially curative therapy were restricted to men with no worse than mild comorbidity. When cohort and pooled case series data were used, RP was preferred over EBRT in all groups but was comparable to modern radiotherapy."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: Prior decision-analytic models are based on outdated or suboptimal efficacy, patient preference, and comorbidity data. We estimated life expectancy (LE) and quality-adjusted life expectancy (QALE) associated with available treatments for localized prostate cancer in men aged>/= 65 years, adjusting for Gleason score, patient preferences, and comorbidity.\n\nMETHODS: We evaluated three treatments, using a decision-analytic Markov model: radical prostatectomy (RP), external beam radiotherapy (EBRT), and watchful waiting (WW). Rates of treatment complications and pretreatment incontinence and impotence were derived from published studies. We estimated treatment efficacy using three data sources: cancer registry cohort data, pooled case series, and modern radiotherapy studies. Utilities were obtained from 141 prostate cancer patients and from published studies.\n\nRESULTS: For men with well-differentiated tumors and few comorbidities, potentially curative therapy (RP or EBRT) prolonged LE up to age 75 years but did not improve QALE at any age. For moderately differentiated cancers, potentially curative therapy resulted in LE and QALE gains up to age 75 years. For poorly differentiated disease, potentially curative therapy resulted in LE and QALE gains up to age 80 years. Benefits of potentially curative therapy were restricted to men with no worse than mild comorbidity. When cohort and pooled case series data were used, RP was preferred over EBRT in all groups but was comparable to modern radiotherapy.\n\nBiomedical Question:\nDo older men benefit from curative therapy of localized prostate cancer?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Potentially curative therapy results in significantly improved LE and QALE for older men with few comorbidities and moderately or poorly differentiated localized prostate cancer. Age should not be a barrier to treatment in this group.\",\n  \"evidence\": [\n    \"For men with well-differentiated tumors and few comorbidities, potentially curative therapy (RP or EBRT) prolonged LE up to age 75 years but did not improve QALE at any age. For moderately differentiated cancers, potentially curative therapy resulted in LE and QALE gains up to age 75 years. For poorly differentiated disease, potentially curative therapy resulted in LE and QALE gains up to age 80 years. Benefits of potentially curative therapy were restricted to men with no worse than mild comorbidity. When cohort and pooled case series data were used, RP was preferred over EBRT in all groups but was comparable to modern radiotherapy.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_12684740", "pmid": "12684740", "task": "evidence_qa", "question": "Cue-induced behavioural activation: a novel model of alcohol craving?", "context": "RATIONALE: Alcohol-associated cues elicit craving in human addicts but little is known about craving mechanisms. Current animal models focus on relapse and this may confound the effect of environmental cues. OBJECTIVES. To develop a model to study the effects of environmental cues on alcohol consumption in animals not experiencing withdrawal or relapse.\n\nMETHODS: Rats were trained to orally self-administer an alcohol (5% w/v)/saccharin (0.2%) solution 30 min a day for 20 days. After stable responding on a free choice between alcohol/saccharin and water, rats were exposed to 5, 10 or 15 min of alcohol-associated cues or 5 min of non-alcohol associated cues. The effect of a 5-min cue was measured after a 10-day break from training or pre-treatment with 0.03, 0.1 or 1 mg/kg naltrexone.\n\nRESULTS: Rats given 5 min of alcohol-associated cues responded significantly more on the active lever (26% increase) and consumed more alcohol as verified by increased blood alcohol levels (8.9 mM versus control 7.5 mM). Ten or 15 min of cues did not change alcohol consumption and 5 min in a novel environment decreased response by 66%. After a 10-day break in training, 5 min of alcohol-associated cues still increased alcohol consumption (29% increase) and the cue effect could be dose-dependently blocked by naltrexone (143% decrease at 0.03 mg/kg).", "ground_truth": {"decision": "yes", "answer": "Cue-induced behavioural activation was specific to alcohol cues, reproducible, persistent and could be blocked by naltrexone, and its correlation with human self-report of craving makes it a potentially useful model for studying alcohol craving.", "evidence": ["Rats given 5 min of alcohol-associated cues responded significantly more on the active lever (26% increase) and consumed more alcohol as verified by increased blood alcohol levels (8.9 mM versus control 7.5 mM). Ten or 15 min of cues did not change alcohol consumption and 5 min in a novel environment decreased response by 66%. After a 10-day break in training, 5 min of alcohol-associated cues still increased alcohol consumption (29% increase) and the cue effect could be dose-dependently blocked by naltrexone (143% decrease at 0.03 mg/kg)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nRATIONALE: Alcohol-associated cues elicit craving in human addicts but little is known about craving mechanisms. Current animal models focus on relapse and this may confound the effect of environmental cues. OBJECTIVES. To develop a model to study the effects of environmental cues on alcohol consumption in animals not experiencing withdrawal or relapse.\n\nMETHODS: Rats were trained to orally self-administer an alcohol (5% w/v)/saccharin (0.2%) solution 30 min a day for 20 days. After stable responding on a free choice between alcohol/saccharin and water, rats were exposed to 5, 10 or 15 min of alcohol-associated cues or 5 min of non-alcohol associated cues. The effect of a 5-min cue was measured after a 10-day break from training or pre-treatment with 0.03, 0.1 or 1 mg/kg naltrexone.\n\nRESULTS: Rats given 5 min of alcohol-associated cues responded significantly more on the active lever (26% increase) and consumed more alcohol as verified by increased blood alcohol levels (8.9 mM versus control 7.5 mM). Ten or 15 min of cues did not change alcohol consumption and 5 min in a novel environment decreased response by 66%. After a 10-day break in training, 5 min of alcohol-associated cues still increased alcohol consumption (29% increase) and the cue effect could be dose-dependently blocked by naltrexone (143% decrease at 0.03 mg/kg).\n\nBiomedical Question:\nCue-induced behavioural activation: a novel model of alcohol craving?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Cue-induced behavioural activation was specific to alcohol cues, reproducible, persistent and could be blocked by naltrexone, and its correlation with human self-report of craving makes it a potentially useful model for studying alcohol craving.\",\n  \"evidence\": [\n    \"Rats given 5 min of alcohol-associated cues responded significantly more on the active lever (26% increase) and consumed more alcohol as verified by increased blood alcohol levels (8.9 mM versus control 7.5 mM). Ten or 15 min of cues did not change alcohol consumption and 5 min in a novel environment decreased response by 66%. After a 10-day break in training, 5 min of alcohol-associated cues still increased alcohol consumption (29% increase) and the cue effect could be dose-dependently blocked by naltrexone (143% decrease at 0.03 mg/kg).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_24160268", "pmid": "24160268", "task": "evidence_qa", "question": "\"Would a man smell a rose then throw it away?", "context": "BACKGROUND: Breast cancer is the most common malignancy afflicting women, and the most common cancer overall in Jordan. A woman's decision to go for screening is influenced by her social support network. This study aims to explore Jordanian men's individual and contextual perspectives on women's breast cancer and their own role in the breast health of the females within their families.\n\nMETHODS: An explorative qualitative design was used to purposively recruit 24 married men aged 27 to 65 years (median 43 years) from four governorates in Jordan. Data in the form of interviews transcriptions was subjected to qualitative content analysis.\n\nRESULTS: Three themes were identified: a) Supporting one's wife; b) Marital needs and obligations; c) Constrained by a culture of destiny and shame. The first theme was built on men's feelings of responsibility for the family's health and well-being, their experiences of encouraging their wives to seek health care and their providing counselling and instrumental support. The second theme emerged from men's views about other men's rejection of a wife inflicted by breast cancer, their own perceptions of diminished femininity due to mastectomy and their own concerns about protecting the family from the hereditary risk of breast cancer. The third theme was seen in men's perception of breast cancer as an inevitable act of God that is far away from one's own family, in associating breast cancer with improper behaviour and in their readiness to face the culture of Eib (shame).", "ground_truth": {"decision": "maybe", "answer": "Jordanian men perceive themselves as having a vital role in supporting, guiding and encouraging their wives to follow breast cancer early detection recommendations. Breast health awareness campaigns could involve husbands to capitalize on family support.", "evidence": ["Three themes were identified: a) Supporting one's wife; b) Marital needs and obligations; c) Constrained by a culture of destiny and shame. The first theme was built on men's feelings of responsibility for the family's health and well-being, their experiences of encouraging their wives to seek health care and their providing counselling and instrumental support. The second theme emerged from men's views about other men's rejection of a wife inflicted by breast cancer, their own perceptions of diminished femininity due to mastectomy and their own concerns about protecting the family from the hereditary risk of breast cancer. The third theme was seen in men's perception of breast cancer as an inevitable act of God that is far away from one's own family, in associating breast cancer with improper behaviour and in their readiness to face the culture of Eib (shame)."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Breast cancer is the most common malignancy afflicting women, and the most common cancer overall in Jordan. A woman's decision to go for screening is influenced by her social support network. This study aims to explore Jordanian men's individual and contextual perspectives on women's breast cancer and their own role in the breast health of the females within their families.\n\nMETHODS: An explorative qualitative design was used to purposively recruit 24 married men aged 27 to 65 years (median 43 years) from four governorates in Jordan. Data in the form of interviews transcriptions was subjected to qualitative content analysis.\n\nRESULTS: Three themes were identified: a) Supporting one's wife; b) Marital needs and obligations; c) Constrained by a culture of destiny and shame. The first theme was built on men's feelings of responsibility for the family's health and well-being, their experiences of encouraging their wives to seek health care and their providing counselling and instrumental support. The second theme emerged from men's views about other men's rejection of a wife inflicted by breast cancer, their own perceptions of diminished femininity due to mastectomy and their own concerns about protecting the family from the hereditary risk of breast cancer. The third theme was seen in men's perception of breast cancer as an inevitable act of God that is far away from one's own family, in associating breast cancer with improper behaviour and in their readiness to face the culture of Eib (shame).\n\nBiomedical Question:\n\"Would a man smell a rose then throw it away?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"Jordanian men perceive themselves as having a vital role in supporting, guiding and encouraging their wives to follow breast cancer early detection recommendations. Breast health awareness campaigns could involve husbands to capitalize on family support.\",\n  \"evidence\": [\n    \"Three themes were identified: a) Supporting one's wife; b) Marital needs and obligations; c) Constrained by a culture of destiny and shame. The first theme was built on men's feelings of responsibility for the family's health and well-being, their experiences of encouraging their wives to seek health care and their providing counselling and instrumental support. The second theme emerged from men's views about other men's rejection of a wife inflicted by breast cancer, their own perceptions of diminished femininity due to mastectomy and their own concerns about protecting the family from the hereditary risk of breast cancer. The third theme was seen in men's perception of breast cancer as an inevitable act of God that is far away from one's own family, in associating breast cancer with improper behaviour and in their readiness to face the culture of Eib (shame).\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_19575104", "pmid": "19575104", "task": "evidence_qa", "question": "Do foreign bodies migrate through the body towards the heart?", "context": "UNLABELLED: Fixation of foreign bodies (FB), in the mucosa, can favor its migration, giving origin to the popular saying: 'FB walk to the heart'.AIM: Describe the mechanisms involved in FB migration and how to diagnose them.\n\nMETHODOLOGY: From a sample of 3,000 foreign bodies, during 40 years, we analyzed four which had extra-lumen migration. We analyzed clinical, radiologic, endoscopic and ultrasound data collected at the medical documentation service.\n\nRESULTS: Three clinical histories are presented, describing two fish bones and one piece of fish cartilage. FB shifting was analyzed in all of them. Migration started in the esophagus in two, one going to the aorta and the other to the neck area. In the other two, migration started in the pharynx, and the FB moved towards the prevertebral fascia and the other externalized in the submandibular region. The mechanisms and the risks posed to the patient, by FB migration, and the way to diagnose them are hereby discussed.", "ground_truth": {"decision": "no", "answer": "The study allows us to determine that FB can move through the body but not towards the heart. The study also serves as a warning sign: in cases of prolonged histories of FB ingestion, imaging studies are mandatory before endoscopic examination.", "evidence": ["Three clinical histories are presented, describing two fish bones and one piece of fish cartilage. FB shifting was analyzed in all of them. Migration started in the esophagus in two, one going to the aorta and the other to the neck area. In the other two, migration started in the pharynx, and the FB moved towards the prevertebral fascia and the other externalized in the submandibular region. The mechanisms and the risks posed to the patient, by FB migration, and the way to diagnose them are hereby discussed."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nUNLABELLED: Fixation of foreign bodies (FB), in the mucosa, can favor its migration, giving origin to the popular saying: 'FB walk to the heart'.AIM: Describe the mechanisms involved in FB migration and how to diagnose them.\n\nMETHODOLOGY: From a sample of 3,000 foreign bodies, during 40 years, we analyzed four which had extra-lumen migration. We analyzed clinical, radiologic, endoscopic and ultrasound data collected at the medical documentation service.\n\nRESULTS: Three clinical histories are presented, describing two fish bones and one piece of fish cartilage. FB shifting was analyzed in all of them. Migration started in the esophagus in two, one going to the aorta and the other to the neck area. In the other two, migration started in the pharynx, and the FB moved towards the prevertebral fascia and the other externalized in the submandibular region. The mechanisms and the risks posed to the patient, by FB migration, and the way to diagnose them are hereby discussed.\n\nBiomedical Question:\nDo foreign bodies migrate through the body towards the heart?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"The study allows us to determine that FB can move through the body but not towards the heart. The study also serves as a warning sign: in cases of prolonged histories of FB ingestion, imaging studies are mandatory before endoscopic examination.\",\n  \"evidence\": [\n    \"Three clinical histories are presented, describing two fish bones and one piece of fish cartilage. FB shifting was analyzed in all of them. Migration started in the esophagus in two, one going to the aorta and the other to the neck area. In the other two, migration started in the pharynx, and the FB moved towards the prevertebral fascia and the other externalized in the submandibular region. The mechanisms and the risks posed to the patient, by FB migration, and the way to diagnose them are hereby discussed.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_11481172", "pmid": "11481172", "task": "evidence_qa", "question": "Does the manic/mixed episode distinction in bipolar disorder patients run true over time?", "context": "OBJECTIVE: The authors sought to determine whether the manic/mixed episode distinction in patients with bipolar disorder runs true over time.\n\nMETHOD: Over an 11-year period, the observed distribution of manic and mixed episodes (N=1,224) for patients with three or more entries in the management information system of a community mental health center (N=241) was compared to the expected distribution determined by averaging 1,000 randomly generated simulations.\n\nRESULTS: Episodes were consistent (all manic or all mixed) in significantly more patients than would be expected by chance.", "ground_truth": {"decision": "yes", "answer": "These data suggest a pattern of diagnostic stability over time for manic and mixed episodes in patients with bipolar disorder. Careful prospective studies of this issue are needed.", "evidence": ["Episodes were consistent (all manic or all mixed) in significantly more patients than would be expected by chance."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: The authors sought to determine whether the manic/mixed episode distinction in patients with bipolar disorder runs true over time.\n\nMETHOD: Over an 11-year period, the observed distribution of manic and mixed episodes (N=1,224) for patients with three or more entries in the management information system of a community mental health center (N=241) was compared to the expected distribution determined by averaging 1,000 randomly generated simulations.\n\nRESULTS: Episodes were consistent (all manic or all mixed) in significantly more patients than would be expected by chance.\n\nBiomedical Question:\nDoes the manic/mixed episode distinction in bipolar disorder patients run true over time?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"These data suggest a pattern of diagnostic stability over time for manic and mixed episodes in patients with bipolar disorder. Careful prospective studies of this issue are needed.\",\n  \"evidence\": [\n    \"Episodes were consistent (all manic or all mixed) in significantly more patients than would be expected by chance.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_22453060", "pmid": "22453060", "task": "evidence_qa", "question": "Does a 4 diagram manual enable laypersons to operate the Laryngeal Mask Supreme®?", "context": "BACKGROUND: Bystander resuscitation plays an important role in lifesaving cardiopulmonary resuscitation (CPR). A significant reduction in the \"no-flow-time\", quantitatively better chest compressions and an improved quality of ventilation can be demonstrated during CPR using supraglottic airway devices (SADs). Previous studies have demonstrated the ability of inexperienced persons to operate SADs after brief instruction. The aim of this pilot study was to determine whether an instruction manual consisting of four diagrams enables laypersons to operate a Laryngeal Mask Supreme® (LMAS) in the manikin.\n\nMETHODS: An instruction manual of four illustrations with speech bubbles displaying the correct use of the LMAS was designed. Laypersons were handed a bag containing a LMAS, a bag mask valve device (BMV), a syringe prefilled with air and the instruction sheet, and were asked to perform and ventilate the manikin as displayed. Time to ventilation was recorded and degree of success evaluated.\n\nRESULTS: A total of 150 laypersons took part. Overall 145 participants (96.7%) inserted the LMAS in the manikin in the right direction. The device was inserted inverted or twisted in 13 (8.7%) attempts. Eight (5.3%) individuals recognized this and corrected the position. Within the first 2 minutes 119 (79.3%) applicants were able to insert the LMAS and provide tidal volumes greater than 150 ml (estimated dead space). Time to insertion and first ventilation was 83.2 ± 29 s. No significant difference related to previous BLS training (P = 0.85), technical education (P = 0.07) or gender could be demonstrated (P = 0.25).", "ground_truth": {"decision": "yes", "answer": "In manikin laypersons could insert LMAS in the correct direction after onsite instruction by a simple manual with a high success rate. This indicates some basic procedural understanding and intellectual transfer in principle. Operating errors (n = 91) were frequently not recognized and corrected (n = 77). Improvements in labeling and the quality of instructional photographs may reduce individual error and may optimize understanding.", "evidence": ["A total of 150 laypersons took part. Overall 145 participants (96.7%) inserted the LMAS in the manikin in the right direction. The device was inserted inverted or twisted in 13 (8.7%) attempts. Eight (5.3%) individuals recognized this and corrected the position. Within the first 2 minutes 119 (79.3%) applicants were able to insert the LMAS and provide tidal volumes greater than 150 ml (estimated dead space). Time to insertion and first ventilation was 83.2 ± 29 s. No significant difference related to previous BLS training (P = 0.85), technical education (P = 0.07) or gender could be demonstrated (P = 0.25)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Bystander resuscitation plays an important role in lifesaving cardiopulmonary resuscitation (CPR). A significant reduction in the \"no-flow-time\", quantitatively better chest compressions and an improved quality of ventilation can be demonstrated during CPR using supraglottic airway devices (SADs). Previous studies have demonstrated the ability of inexperienced persons to operate SADs after brief instruction. The aim of this pilot study was to determine whether an instruction manual consisting of four diagrams enables laypersons to operate a Laryngeal Mask Supreme® (LMAS) in the manikin.\n\nMETHODS: An instruction manual of four illustrations with speech bubbles displaying the correct use of the LMAS was designed. Laypersons were handed a bag containing a LMAS, a bag mask valve device (BMV), a syringe prefilled with air and the instruction sheet, and were asked to perform and ventilate the manikin as displayed. Time to ventilation was recorded and degree of success evaluated.\n\nRESULTS: A total of 150 laypersons took part. Overall 145 participants (96.7%) inserted the LMAS in the manikin in the right direction. The device was inserted inverted or twisted in 13 (8.7%) attempts. Eight (5.3%) individuals recognized this and corrected the position. Within the first 2 minutes 119 (79.3%) applicants were able to insert the LMAS and provide tidal volumes greater than 150 ml (estimated dead space). Time to insertion and first ventilation was 83.2 ± 29 s. No significant difference related to previous BLS training (P = 0.85), technical education (P = 0.07) or gender could be demonstrated (P = 0.25).\n\nBiomedical Question:\nDoes a 4 diagram manual enable laypersons to operate the Laryngeal Mask Supreme®?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"In manikin laypersons could insert LMAS in the correct direction after onsite instruction by a simple manual with a high success rate. This indicates some basic procedural understanding and intellectual transfer in principle. Operating errors (n = 91) were frequently not recognized and corrected (n = 77). Improvements in labeling and the quality of instructional photographs may reduce individual error and may optimize understanding.\",\n  \"evidence\": [\n    \"A total of 150 laypersons took part. Overall 145 participants (96.7%) inserted the LMAS in the manikin in the right direction. The device was inserted inverted or twisted in 13 (8.7%) attempts. Eight (5.3%) individuals recognized this and corrected the position. Within the first 2 minutes 119 (79.3%) applicants were able to insert the LMAS and provide tidal volumes greater than 150 ml (estimated dead space). Time to insertion and first ventilation was 83.2 ± 29 s. No significant difference related to previous BLS training (P = 0.85), technical education (P = 0.07) or gender could be demonstrated (P = 0.25).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_16249670", "pmid": "16249670", "task": "evidence_qa", "question": "Does the investing layer of the deep cervical fascia exist?", "context": "BACKGROUND: The placement of the superficial cervical plexus block has been the subject of controversy. Although the investing cervical fascia has been considered as an impenetrable barrier, clinically, the placement of the block deep or superficial to the fascia provides the same effective anesthesia. The underlying mechanism is unclear. The aim of this study was to investigate the three-dimensional organization of connective tissues in the anterior region of the neck.\n\nMETHODS: Using a combination of dissection, E12 sheet plastination, and confocal microscopy, fascial structures in the anterior cervical triangle were examined in 10 adult human cadavers.\n\nRESULTS: In the upper cervical region, the fascia of strap muscles in the middle and the fasciae of the submandibular glands on both sides formed a dumbbell-like fascia sheet that had free lateral margins and did not continue with the sternocleidomastoid fascia. In the lower cervical region, no single connective tissue sheet extended directly between the sternocleidomastoid muscles. The fascial structure deep to platysma in the anterior cervical triangle comprised the strap fascia.", "ground_truth": {"decision": "no", "answer": "This study provides anatomical evidence to indicate that the so-called investing cervical fascia does not exist in the anterior triangle of the neck. Taking the previous reports together, the authors' findings strongly suggest that deep potential spaces in the neck are directly continuous with the subcutaneous tissue.", "evidence": ["In the upper cervical region, the fascia of strap muscles in the middle and the fasciae of the submandibular glands on both sides formed a dumbbell-like fascia sheet that had free lateral margins and did not continue with the sternocleidomastoid fascia. In the lower cervical region, no single connective tissue sheet extended directly between the sternocleidomastoid muscles. The fascial structure deep to platysma in the anterior cervical triangle comprised the strap fascia."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: The placement of the superficial cervical plexus block has been the subject of controversy. Although the investing cervical fascia has been considered as an impenetrable barrier, clinically, the placement of the block deep or superficial to the fascia provides the same effective anesthesia. The underlying mechanism is unclear. The aim of this study was to investigate the three-dimensional organization of connective tissues in the anterior region of the neck.\n\nMETHODS: Using a combination of dissection, E12 sheet plastination, and confocal microscopy, fascial structures in the anterior cervical triangle were examined in 10 adult human cadavers.\n\nRESULTS: In the upper cervical region, the fascia of strap muscles in the middle and the fasciae of the submandibular glands on both sides formed a dumbbell-like fascia sheet that had free lateral margins and did not continue with the sternocleidomastoid fascia. In the lower cervical region, no single connective tissue sheet extended directly between the sternocleidomastoid muscles. The fascial structure deep to platysma in the anterior cervical triangle comprised the strap fascia.\n\nBiomedical Question:\nDoes the investing layer of the deep cervical fascia exist?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"This study provides anatomical evidence to indicate that the so-called investing cervical fascia does not exist in the anterior triangle of the neck. Taking the previous reports together, the authors' findings strongly suggest that deep potential spaces in the neck are directly continuous with the subcutaneous tissue.\",\n  \"evidence\": [\n    \"In the upper cervical region, the fascia of strap muscles in the middle and the fasciae of the submandibular glands on both sides formed a dumbbell-like fascia sheet that had free lateral margins and did not continue with the sternocleidomastoid fascia. In the lower cervical region, no single connective tissue sheet extended directly between the sternocleidomastoid muscles. The fascial structure deep to platysma in the anterior cervical triangle comprised the strap fascia.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_26285789", "pmid": "26285789", "task": "evidence_qa", "question": "Does Molecular Genotype Provide Useful Information in the Management of Radioiodine Refractory Thyroid Cancers?", "context": "INTRODUCTION: Whether mutation status should be used to guide therapy is an important issue in many cancers. We correlated mutation profile in radioiodine-refractory (RAIR) metastatic thyroid cancers (TCs) with patient outcome and response to tyrosine kinase inhibitors (TKIs), and discussed the results with other published data.\n\nMATERIALS AND METHODS: Outcome in 82 consecutive patients with metastatic RAIR thyroid carcinoma prospectively tested for BRAF, RAS and PI3KCA mutations was retrospectively analyzed, including 55 patients treated with multikinase inhibitors.\n\nRESULTS: Papillary thyroid carcinomas (PTCs) were the most frequent histological subtype (54.9 %), followed by poorly differentiated thyroid carcinoma [PDTC] (30.5 %) and follicular thyroid carcinoma [FTC](14.6 %). A genetic mutation was identified in 23 patients (28 %) and BRAF was the most frequently mutated gene (23 %). Median progression-free survival (PFS) on first-line TKI treatment was 14.6 months (95% CI 9.9-18.4). BRAF mutation positively influenced median PFS, both in the entire TKI-treated cohort (median PFS 34.7 months versus 11.6 months; hazard ratio [HR] 0.29; 95% CI 0.09-0.98; p = 0.03) and in the TKI-treated PTC cohort (n = 22) [log-rank p = 0.086; HR 2.95; 95 % CI 0.81-10.70). However, in TKI-treated patients, PDTC histologic subtype was the only independent prognostic factor for PFS identified in the multivariate analysis (HR 2.36; 95% CI 1.01-5.54; p = 0.048).", "ground_truth": {"decision": "yes", "answer": "Patients with BRAF-mutant PTC had a significantly longer PFS than BRAF wild-type when treated with TKIs. However, due to the small number of BRAF-mutant patients, further investigations are required, especially to understand the potential positive effect of BRAF mutations in RAIR TC patients while having a negative prognostic impact in RAI-sensitive PTC patients.", "evidence": ["Papillary thyroid carcinomas (PTCs) were the most frequent histological subtype (54.9 %), followed by poorly differentiated thyroid carcinoma [PDTC] (30.5 %) and follicular thyroid carcinoma [FTC](14.6 %). A genetic mutation was identified in 23 patients (28 %) and BRAF was the most frequently mutated gene (23 %). Median progression-free survival (PFS) on first-line TKI treatment was 14.6 months (95% CI 9.9-18.4). BRAF mutation positively influenced median PFS, both in the entire TKI-treated cohort (median PFS 34.7 months versus 11.6 months; hazard ratio [HR] 0.29; 95% CI 0.09-0.98; p = 0.03) and in the TKI-treated PTC cohort (n = 22) [log-rank p = 0.086; HR 2.95; 95 % CI 0.81-10.70). However, in TKI-treated patients, PDTC histologic subtype was the only independent prognostic factor for PFS identified in the multivariate analysis (HR 2.36; 95% CI 1.01-5.54; p = 0.048)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nINTRODUCTION: Whether mutation status should be used to guide therapy is an important issue in many cancers. We correlated mutation profile in radioiodine-refractory (RAIR) metastatic thyroid cancers (TCs) with patient outcome and response to tyrosine kinase inhibitors (TKIs), and discussed the results with other published data.\n\nMATERIALS AND METHODS: Outcome in 82 consecutive patients with metastatic RAIR thyroid carcinoma prospectively tested for BRAF, RAS and PI3KCA mutations was retrospectively analyzed, including 55 patients treated with multikinase inhibitors.\n\nRESULTS: Papillary thyroid carcinomas (PTCs) were the most frequent histological subtype (54.9 %), followed by poorly differentiated thyroid carcinoma [PDTC] (30.5 %) and follicular thyroid carcinoma [FTC](14.6 %). A genetic mutation was identified in 23 patients (28 %) and BRAF was the most frequently mutated gene (23 %). Median progression-free survival (PFS) on first-line TKI treatment was 14.6 months (95% CI 9.9-18.4). BRAF mutation positively influenced median PFS, both in the entire TKI-treated cohort (median PFS 34.7 months versus 11.6 months; hazard ratio [HR] 0.29; 95% CI 0.09-0.98; p = 0.03) and in the TKI-treated PTC cohort (n = 22) [log-rank p = 0.086; HR 2.95; 95 % CI 0.81-10.70). However, in TKI-treated patients, PDTC histologic subtype was the only independent prognostic factor for PFS identified in the multivariate analysis (HR 2.36; 95% CI 1.01-5.54; p = 0.048).\n\nBiomedical Question:\nDoes Molecular Genotype Provide Useful Information in the Management of Radioiodine Refractory Thyroid Cancers?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Patients with BRAF-mutant PTC had a significantly longer PFS than BRAF wild-type when treated with TKIs. However, due to the small number of BRAF-mutant patients, further investigations are required, especially to understand the potential positive effect of BRAF mutations in RAIR TC patients while having a negative prognostic impact in RAI-sensitive PTC patients.\",\n  \"evidence\": [\n    \"Papillary thyroid carcinomas (PTCs) were the most frequent histological subtype (54.9 %), followed by poorly differentiated thyroid carcinoma [PDTC] (30.5 %) and follicular thyroid carcinoma [FTC](14.6 %). A genetic mutation was identified in 23 patients (28 %) and BRAF was the most frequently mutated gene (23 %). Median progression-free survival (PFS) on first-line TKI treatment was 14.6 months (95% CI 9.9-18.4). BRAF mutation positively influenced median PFS, both in the entire TKI-treated cohort (median PFS 34.7 months versus 11.6 months; hazard ratio [HR] 0.29; 95% CI 0.09-0.98; p = 0.03) and in the TKI-treated PTC cohort (n = 22) [log-rank p = 0.086; HR 2.95; 95 % CI 0.81-10.70). However, in TKI-treated patients, PDTC histologic subtype was the only independent prognostic factor for PFS identified in the multivariate analysis (HR 2.36; 95% CI 1.01-5.54; p = 0.048).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_12121321", "pmid": "12121321", "task": "evidence_qa", "question": "Do mossy fibers release GABA?", "context": "PURPOSE: Mossy fibers are the sole excitatory projection from dentate gyrus granule cells to the hippocampus, forming part of the trisynaptic hippocampal circuit. They undergo significant plasticity during epileptogenesis and have been implicated in seizure generation. Mossy fibers are a highly unusual projection in the mammalian brain; in addition to glutamate, they release adenosine, dynorphin, zinc, and possibly other peptides. Mossy fiber terminals also show intense immunoreactivity for the inhibitory neurotransmitter gamma-aminobutyric acid (GABA), and immunoreactivity for GAD67. The purpose of this review is to present physiologic evidence of GABA release by mossy fibers and its modulation by epileptic activity.\n\nMETHODS: We used hippocampal slices from 3- to 5-week-old guinea pigs and made whole-cell voltage clamp recordings from CA3 pyramidal cells. We placed stimulating electrodes in stratum granulosum and adjusted their position in order to recruit mossy fiber to CA3 projections.\n\nRESULTS: We have shown that electrical stimuli that recruit dentate granule cells elicit monosynaptic GABAA receptor-mediated synaptic signals in CA3 pyramidal neurons. These inhibitory signals satisfy the criteria that distinguish mossy fiber-CA3 synapses: high sensitivity to metabotropic glutamate-receptor agonists, facilitation during repetitive stimulation, and N-methyl-D-aspartate (NMDA) receptor-independent long-term potentiation.", "ground_truth": {"decision": "yes", "answer": "We have thus provided compelling evidence that there is a mossy fiber GABAergic signal. The physiologic role of this mossy fiber GABAergic signal is uncertain, but may be of developmental importance. Other evidence suggests that this GABAergic signal is transiently upregulated after seizures. This could have an inhibitory or disinhibitory effect, and further work is needed to elucidate its actual role.", "evidence": ["We have shown that electrical stimuli that recruit dentate granule cells elicit monosynaptic GABAA receptor-mediated synaptic signals in CA3 pyramidal neurons. These inhibitory signals satisfy the criteria that distinguish mossy fiber-CA3 synapses: high sensitivity to metabotropic glutamate-receptor agonists, facilitation during repetitive stimulation, and N-methyl-D-aspartate (NMDA) receptor-independent long-term potentiation."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: Mossy fibers are the sole excitatory projection from dentate gyrus granule cells to the hippocampus, forming part of the trisynaptic hippocampal circuit. They undergo significant plasticity during epileptogenesis and have been implicated in seizure generation. Mossy fibers are a highly unusual projection in the mammalian brain; in addition to glutamate, they release adenosine, dynorphin, zinc, and possibly other peptides. Mossy fiber terminals also show intense immunoreactivity for the inhibitory neurotransmitter gamma-aminobutyric acid (GABA), and immunoreactivity for GAD67. The purpose of this review is to present physiologic evidence of GABA release by mossy fibers and its modulation by epileptic activity.\n\nMETHODS: We used hippocampal slices from 3- to 5-week-old guinea pigs and made whole-cell voltage clamp recordings from CA3 pyramidal cells. We placed stimulating electrodes in stratum granulosum and adjusted their position in order to recruit mossy fiber to CA3 projections.\n\nRESULTS: We have shown that electrical stimuli that recruit dentate granule cells elicit monosynaptic GABAA receptor-mediated synaptic signals in CA3 pyramidal neurons. These inhibitory signals satisfy the criteria that distinguish mossy fiber-CA3 synapses: high sensitivity to metabotropic glutamate-receptor agonists, facilitation during repetitive stimulation, and N-methyl-D-aspartate (NMDA) receptor-independent long-term potentiation.\n\nBiomedical Question:\nDo mossy fibers release GABA?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"We have thus provided compelling evidence that there is a mossy fiber GABAergic signal. The physiologic role of this mossy fiber GABAergic signal is uncertain, but may be of developmental importance. Other evidence suggests that this GABAergic signal is transiently upregulated after seizures. This could have an inhibitory or disinhibitory effect, and further work is needed to elucidate its actual role.\",\n  \"evidence\": [\n    \"We have shown that electrical stimuli that recruit dentate granule cells elicit monosynaptic GABAA receptor-mediated synaptic signals in CA3 pyramidal neurons. These inhibitory signals satisfy the criteria that distinguish mossy fiber-CA3 synapses: high sensitivity to metabotropic glutamate-receptor agonists, facilitation during repetitive stimulation, and N-methyl-D-aspartate (NMDA) receptor-independent long-term potentiation.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_27581329", "pmid": "27581329", "task": "evidence_qa", "question": "Estimation of basal metabolic rate in Chinese: are the current prediction equations applicable?", "context": "BACKGROUND: Measurement of basal metabolic rate (BMR) is suggested as a tool to estimate energy requirements. Therefore, BMR prediction equations have been developed in multiple populations because indirect calorimetry is not always feasible. However, there is a paucity of data on BMR measured in overweight and obese adults living in Asia and equations developed for this group of interest. The aim of this study was to develop a new BMR prediction equation for Chinese adults applicable for a large BMI range and compare it with commonly used prediction equations.\n\nMETHODS: Subjects were 121 men and 111 women (age: 21-67 years, BMI: 16-41 kg/m(2)). Height, weight, and BMR were measured. Continuous open-circuit indirect calorimetry using a ventilated hood system for 30 min was used to measure BMR. A regression equation was derived using stepwise regression and accuracy was compared to 6 existing equations (Harris-Benedict, Henry, Liu, Yang, Owen and Mifflin). Additionally, the newly derived equation was cross-validated in a separate group of 70 Chinese subjects (26 men and 44 women, age: 21-69 years, BMI: 17-39 kg/m(2)).\n\nRESULTS: The equation developed from our data was: BMR (kJ/d) = 52.6 x weight (kg) + 828 x gender + 1960 (women = 0, men = 1; R(2) = 0.81). The accuracy rate (within 10 % accurate) was 78 % which compared well to Owen (70 %), Henry (67 %), Mifflin (67 %), Liu (58 %), Harris-Benedict (45 %) and Yang (37 %) for the whole range of BMI. For a BMI greater than 23, the Singapore equation reached an accuracy rate of 76 %. Cross-validation proved an accuracy rate of 80 %.", "ground_truth": {"decision": "yes", "answer": "To date, the newly developed Singapore equation is the most accurate BMR prediction equation in Chinese and is applicable for use in a large BMI range including those overweight and obese.", "evidence": ["The equation developed from our data was: BMR (kJ/d) = 52.6 x weight (kg) + 828 x gender + 1960 (women = 0, men = 1; R(2) = 0.81). The accuracy rate (within 10 % accurate) was 78 % which compared well to Owen (70 %), Henry (67 %), Mifflin (67 %), Liu (58 %), Harris-Benedict (45 %) and Yang (37 %) for the whole range of BMI. For a BMI greater than 23, the Singapore equation reached an accuracy rate of 76 %. Cross-validation proved an accuracy rate of 80 %."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Measurement of basal metabolic rate (BMR) is suggested as a tool to estimate energy requirements. Therefore, BMR prediction equations have been developed in multiple populations because indirect calorimetry is not always feasible. However, there is a paucity of data on BMR measured in overweight and obese adults living in Asia and equations developed for this group of interest. The aim of this study was to develop a new BMR prediction equation for Chinese adults applicable for a large BMI range and compare it with commonly used prediction equations.\n\nMETHODS: Subjects were 121 men and 111 women (age: 21-67 years, BMI: 16-41 kg/m(2)). Height, weight, and BMR were measured. Continuous open-circuit indirect calorimetry using a ventilated hood system for 30 min was used to measure BMR. A regression equation was derived using stepwise regression and accuracy was compared to 6 existing equations (Harris-Benedict, Henry, Liu, Yang, Owen and Mifflin). Additionally, the newly derived equation was cross-validated in a separate group of 70 Chinese subjects (26 men and 44 women, age: 21-69 years, BMI: 17-39 kg/m(2)).\n\nRESULTS: The equation developed from our data was: BMR (kJ/d) = 52.6 x weight (kg) + 828 x gender + 1960 (women = 0, men = 1; R(2) = 0.81). The accuracy rate (within 10 % accurate) was 78 % which compared well to Owen (70 %), Henry (67 %), Mifflin (67 %), Liu (58 %), Harris-Benedict (45 %) and Yang (37 %) for the whole range of BMI. For a BMI greater than 23, the Singapore equation reached an accuracy rate of 76 %. Cross-validation proved an accuracy rate of 80 %.\n\nBiomedical Question:\nEstimation of basal metabolic rate in Chinese: are the current prediction equations applicable?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"To date, the newly developed Singapore equation is the most accurate BMR prediction equation in Chinese and is applicable for use in a large BMI range including those overweight and obese.\",\n  \"evidence\": [\n    \"The equation developed from our data was: BMR (kJ/d) = 52.6 x weight (kg) + 828 x gender + 1960 (women = 0, men = 1; R(2) = 0.81). The accuracy rate (within 10 % accurate) was 78 % which compared well to Owen (70 %), Henry (67 %), Mifflin (67 %), Liu (58 %), Harris-Benedict (45 %) and Yang (37 %) for the whole range of BMI. For a BMI greater than 23, the Singapore equation reached an accuracy rate of 76 %. Cross-validation proved an accuracy rate of 80 %.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_11247896", "pmid": "11247896", "task": "evidence_qa", "question": "Can APC mutation analysis contribute to therapeutic decisions in familial adenomatous polyposis?", "context": "BACKGROUND AND AIMS: In familial adenomatous polyposis (FAP), correlations between site of mutation in the adenomatous polyposis coli (APC) gene and severity of colonic polyposis or extracolonic manifestations are well known. While mutation analysis is important for predictive diagnosis in persons at risk, its relevance for clinical management of individual patients is open to question.\n\nMETHODS: We examined 680 unrelated FAP families for germline mutations in the APC gene. Clinical information was obtained from 1256 patients.\n\nRESULTS: APC mutations were detected in 48% (327/680) of families. Age at diagnosis of FAP based on bowel symptoms and age at diagnosis of colorectal cancer in untreated patients were used as indicators of the severity of the natural course of the disease. A germline mutation was detected in 230 of 404 patients who were diagnosed after onset of bowel symptoms (rectal bleeding, abdominal pain, diarrhoea). When these patients were grouped according to the different sites of mutations, mean values for age at onset of disease differed significantly: patients carrying APC mutations at codon 1309 showed a disease onset 10 years earlier (mean age 20 years) compared with patients with mutations between codons 168 and 1580 (except codon 1309) (mean age 30 years), whereas patients with mutations at the 5' end of codon 168 or the 3' end of codon 1580 were diagnosed at a mean age of 52 years. Within each group of patients however large phenotypic variation was observed, even among patients with identical germline mutations. A higher incidence of desmoids was found in patients with mutations between codons 1445 and 1580 compared with mutations at other sites, while no correlation between site of mutation and presence of duodenal adenomas was observed.", "ground_truth": {"decision": "maybe", "answer": "As age at manifestation and course of the disease may be rather variable, even in carriers of identical germline mutations, therapeutic decisions should be based on colonoscopic findings in individual patients rather than on the site of mutation. However, in patients with mutations within codons 1445-1580, it may be advisable to postpone elective colectomy because desmoids may arise through surgical intervention.", "evidence": ["APC mutations were detected in 48% (327/680) of families. Age at diagnosis of FAP based on bowel symptoms and age at diagnosis of colorectal cancer in untreated patients were used as indicators of the severity of the natural course of the disease. A germline mutation was detected in 230 of 404 patients who were diagnosed after onset of bowel symptoms (rectal bleeding, abdominal pain, diarrhoea). When these patients were grouped according to the different sites of mutations, mean values for age at onset of disease differed significantly: patients carrying APC mutations at codon 1309 showed a disease onset 10 years earlier (mean age 20 years) compared with patients with mutations between codons 168 and 1580 (except codon 1309) (mean age 30 years), whereas patients with mutations at the 5' end of codon 168 or the 3' end of codon 1580 were diagnosed at a mean age of 52 years. Within each group of patients however large phenotypic variation was observed, even among patients with identical germline mutations. A higher incidence of desmoids was found in patients with mutations between codons 1445 and 1580 compared with mutations at other sites, while no correlation between site of mutation and presence of duodenal adenomas was observed."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND AND AIMS: In familial adenomatous polyposis (FAP), correlations between site of mutation in the adenomatous polyposis coli (APC) gene and severity of colonic polyposis or extracolonic manifestations are well known. While mutation analysis is important for predictive diagnosis in persons at risk, its relevance for clinical management of individual patients is open to question.\n\nMETHODS: We examined 680 unrelated FAP families for germline mutations in the APC gene. Clinical information was obtained from 1256 patients.\n\nRESULTS: APC mutations were detected in 48% (327/680) of families. Age at diagnosis of FAP based on bowel symptoms and age at diagnosis of colorectal cancer in untreated patients were used as indicators of the severity of the natural course of the disease. A germline mutation was detected in 230 of 404 patients who were diagnosed after onset of bowel symptoms (rectal bleeding, abdominal pain, diarrhoea). When these patients were grouped according to the different sites of mutations, mean values for age at onset of disease differed significantly: patients carrying APC mutations at codon 1309 showed a disease onset 10 years earlier (mean age 20 years) compared with patients with mutations between codons 168 and 1580 (except codon 1309) (mean age 30 years), whereas patients with mutations at the 5' end of codon 168 or the 3' end of codon 1580 were diagnosed at a mean age of 52 years. Within each group of patients however large phenotypic variation was observed, even among patients with identical germline mutations. A higher incidence of desmoids was found in patients with mutations between codons 1445 and 1580 compared with mutations at other sites, while no correlation between site of mutation and presence of duodenal adenomas was observed.\n\nBiomedical Question:\nCan APC mutation analysis contribute to therapeutic decisions in familial adenomatous polyposis?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"As age at manifestation and course of the disease may be rather variable, even in carriers of identical germline mutations, therapeutic decisions should be based on colonoscopic findings in individual patients rather than on the site of mutation. However, in patients with mutations within codons 1445-1580, it may be advisable to postpone elective colectomy because desmoids may arise through surgical intervention.\",\n  \"evidence\": [\n    \"APC mutations were detected in 48% (327/680) of families. Age at diagnosis of FAP based on bowel symptoms and age at diagnosis of colorectal cancer in untreated patients were used as indicators of the severity of the natural course of the disease. A germline mutation was detected in 230 of 404 patients who were diagnosed after onset of bowel symptoms (rectal bleeding, abdominal pain, diarrhoea). When these patients were grouped according to the different sites of mutations, mean values for age at onset of disease differed significantly: patients carrying APC mutations at codon 1309 showed a disease onset 10 years earlier (mean age 20 years) compared with patients with mutations between codons 168 and 1580 (except codon 1309) (mean age 30 years), whereas patients with mutations at the 5' end of codon 168 or the 3' end of codon 1580 were diagnosed at a mean age of 52 years. Within each group of patients however large phenotypic variation was observed, even among patients with identical germline mutations. A higher incidence of desmoids was found in patients with mutations between codons 1445 and 1580 compared with mutations at other sites, while no correlation between site of mutation and presence of duodenal adenomas was observed.\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmed_42772887", "pmid": "42772887", "task": "evidence_summary", "question": "What was concluded regarding: A workbook- and audio-administered, telephone-guided, low-intensity cognitive behavioural therapy intervention (EJDeR) for parents of persons treated for cancer during childhood: protocol for the CHANGE-pilot randomised controlled trial.?", "context": "INTRODUCTION: Childhood cancer and its treatment place substantial demands on parents, causing significant disruptions in multiple areas of life. Parents report psychological, psychosocial, and economic consequences related to their child's illness. In Sweden, psychosocial support is available to parents via paediatric oncology care during cancer treatment; however, only a minority of parents have access to psychological support after treatment completion. Increasing and improving access to such support could enhance parental mental well-being and help prevent or alleviate negative consequences. One potential solution to provide support is the EJDeR intervention, a co-created workbook- and audio-administered, telephone-guided, low-intensity cognitive behavioural therapy (LICBT) intervention for parents of persons treated for cancer during childhood. Objectives are to examine the feasibility of (1) EJDeR delivered via workbooks, audio files and video case vignettes with telephone guidance from a parent guide, and (2) planned study procedures for a future superiority randomised controlled trial of EJDeR.\n\nMETHODS AND ANALYSIS: This is a parallel-group, two-arm, pilot randomised controlled trial with a 1:1 allocation ratio. A Parent Advisory Board (PAB) contributes to the research. We aim to recruit 60 parents of persons diagnosed with cancer at age 0-18 years whose treatment was completed 3 months to 5 years earlier. Participants will be randomly allocated to EJDeR plus usual care or usual care alone. EJDeR is delivered over 12 weeks via workbooks, audio files and video case vignettes, with telephone guidance from a parent guide. We will examine feasibility outcomes related to procedural, intervention, and methodological uncertainties using a priori progression criteria following a GO-AMEND-STOP progression framework. We will measure clinical (mental well-being, symptoms of depression, anxiety, and post-traumatic stress) and health economic (health-related quality of life and societal resource use) outcomes at baseline, post-treatment (12 weeks), and follow-up (6 months post-treatment). Data analysis is primarily descriptive.\n\nETHICS AND DISSEMINATION: This trial was approved by the Swedish Ethical Review Authority (Dnr 2025-09024-01, approval date: 2 February 2026). We will obtain written informed consent from all participants and disseminate findings in collaboration with the PAB through peer-reviewed publications, conference presentations, and non-academic dissemination activities such as co-writing plain language summaries and dissemination via childhood cancer organisations.\n\nTRIAL REGISTRATION NUMBER: ISRCTN51549508.", "ground_truth": {"decision": "maybe", "answer": "The study reports findings regarding 'A workbook- and audio-administered, telephone-guided, low-intensity cognitive behavioural therapy intervention (EJDeR) for parents of persons treated for cancer during childhood: protocol for the CHANGE-pilot randomised controlled trial.'. Details: INTRODUCTION: Childhood cancer and its treatment place substantial demands on parents, causing significant disruptions in multiple areas of life. Parents report psychological, psychosocial, and economic consequences related to their child's illness. In Sweden, psychosocial support is available to pa...", "evidence": ["INTRODUCTION: Childhood cancer and its treatment place substantial demands on parents, causing significant disruptions in multiple areas of life. Parents report psychological, psychosocial, and econom..."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_summary\n\nEvidence Context:\nINTRODUCTION: Childhood cancer and its treatment place substantial demands on parents, causing significant disruptions in multiple areas of life. Parents report psychological, psychosocial, and economic consequences related to their child's illness. In Sweden, psychosocial support is available to parents via paediatric oncology care during cancer treatment; however, only a minority of parents have access to psychological support after treatment completion. Increasing and improving access to such support could enhance parental mental well-being and help prevent or alleviate negative consequences. One potential solution to provide support is the EJDeR intervention, a co-created workbook- and audio-administered, telephone-guided, low-intensity cognitive behavioural therapy (LICBT) intervention for parents of persons treated for cancer during childhood. Objectives are to examine the feasibility of (1) EJDeR delivered via workbooks, audio files and video case vignettes with telephone guidance from a parent guide, and (2) planned study procedures for a future superiority randomised controlled trial of EJDeR.\n\nMETHODS AND ANALYSIS: This is a parallel-group, two-arm, pilot randomised controlled trial with a 1:1 allocation ratio. A Parent Advisory Board (PAB) contributes to the research. We aim to recruit 60 parents of persons diagnosed with cancer at age 0-18 years whose treatment was completed 3 months to 5 years earlier. Participants will be randomly allocated to EJDeR plus usual care or usual care alone. EJDeR is delivered over 12 weeks via workbooks, audio files and video case vignettes, with telephone guidance from a parent guide. We will examine feasibility outcomes related to procedural, intervention, and methodological uncertainties using a priori progression criteria following a GO-AMEND-STOP progression framework. We will measure clinical (mental well-being, symptoms of depression, anxiety, and post-traumatic stress) and health economic (health-related quality of life and societal resource use) outcomes at baseline, post-treatment (12 weeks), and follow-up (6 months post-treatment). Data analysis is primarily descriptive.\n\nETHICS AND DISSEMINATION: This trial was approved by the Swedish Ethical Review Authority (Dnr 2025-09024-01, approval date: 2 February 2026). We will obtain written informed consent from all participants and disseminate findings in collaboration with the PAB through peer-reviewed publications, conference presentations, and non-academic dissemination activities such as co-writing plain language summaries and dissemination via childhood cancer organisations.\n\nTRIAL REGISTRATION NUMBER: ISRCTN51549508.\n\nBiomedical Question:\nWhat was concluded regarding: A workbook- and audio-administered, telephone-guided, low-intensity cognitive behavioural therapy intervention (EJDeR) for parents of persons treated for cancer during childhood: protocol for the CHANGE-pilot randomised controlled trial.?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"The study reports findings regarding 'A workbook- and audio-administered, telephone-guided, low-intensity cognitive behavioural therapy intervention (EJDeR) for parents of persons treated for cancer during childhood: protocol for the CHANGE-pilot randomised controlled trial.'. Details: INTRODUCTION: Childhood cancer and its treatment place substantial demands on parents, causing significant disruptions in multiple areas of life. Parents report psychological, psychosocial, and economic consequences related to their child's illness. In Sweden, psychosocial support is available to pa...\",\n  \"evidence\": [\n    \"INTRODUCTION: Childhood cancer and its treatment place substantial demands on parents, causing significant disruptions in multiple areas of life. Parents report psychological, psychosocial, and econom...\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_26209118", "pmid": "26209118", "task": "evidence_qa", "question": "Utility of unenhanced fat-suppressed T1-weighted MRI in children with sickle cell disease -- can it differentiate bone infarcts from acute osteomyelitis?", "context": "BACKGROUND: Children with sickle cell disease (SCD) are at risk of bone infarcts and acute osteomyelitis. The clinical differentiation between a bone infarct and acute osteomyelitis is a diagnostic challenge. Unenhanced T1-W fat-saturated MR images have been proposed as a potential tool to differentiate bone infarcts from osteomyelitis.\n\nOBJECTIVE: To evaluate the reliability of unenhanced T1-W fat-saturated MRI for differentiation between bone infarcts and acute osteomyelitis in children with SCD.\n\nMATERIALS AND METHODS: We retrospectively reviewed the records of 31 children (20 boys, 11 girls; mean age 10.6 years, range 1.1-17.9 years) with SCD and acute bone pain who underwent MR imaging including unenhanced T1-W fat-saturated images from 2005 to 2010. Complete clinical charts were reviewed by a pediatric hematologist with training in infectious diseases to determine a clinical standard to define the presence or absence of osteomyelitis. A pediatric radiologist reviewed all MR imaging and was blinded to clinical information. Based on the signal intensity in T1-W fat-saturated images, the children were further classified as positive for osteomyelitis (low bone marrow signal intensity) or positive for bone infarct (high bone marrow signal intensity).\n\nRESULTS: Based on the clinical standard, 5 children were classified as positive for osteomyelitis and 26 children as positive for bone infarct (negative for osteomyelitis). The bone marrow signal intensity on T1-W fat-saturated imaging was not significant for the differentiation between bone infarct and osteomyelitis (P = 0.56). None of the additional evaluated imaging parameters on unenhanced MRI proved reliable in differentiating these diagnoses.", "ground_truth": {"decision": "no", "answer": "The bone marrow signal intensity on unenhanced T1-W fat-saturated MR images is not a reliable criterion to differentiate bone infarcts from osteomyelitis in children.", "evidence": ["Based on the clinical standard, 5 children were classified as positive for osteomyelitis and 26 children as positive for bone infarct (negative for osteomyelitis). The bone marrow signal intensity on T1-W fat-saturated imaging was not significant for the differentiation between bone infarct and osteomyelitis (P = 0.56). None of the additional evaluated imaging parameters on unenhanced MRI proved reliable in differentiating these diagnoses."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Children with sickle cell disease (SCD) are at risk of bone infarcts and acute osteomyelitis. The clinical differentiation between a bone infarct and acute osteomyelitis is a diagnostic challenge. Unenhanced T1-W fat-saturated MR images have been proposed as a potential tool to differentiate bone infarcts from osteomyelitis.\n\nOBJECTIVE: To evaluate the reliability of unenhanced T1-W fat-saturated MRI for differentiation between bone infarcts and acute osteomyelitis in children with SCD.\n\nMATERIALS AND METHODS: We retrospectively reviewed the records of 31 children (20 boys, 11 girls; mean age 10.6 years, range 1.1-17.9 years) with SCD and acute bone pain who underwent MR imaging including unenhanced T1-W fat-saturated images from 2005 to 2010. Complete clinical charts were reviewed by a pediatric hematologist with training in infectious diseases to determine a clinical standard to define the presence or absence of osteomyelitis. A pediatric radiologist reviewed all MR imaging and was blinded to clinical information. Based on the signal intensity in T1-W fat-saturated images, the children were further classified as positive for osteomyelitis (low bone marrow signal intensity) or positive for bone infarct (high bone marrow signal intensity).\n\nRESULTS: Based on the clinical standard, 5 children were classified as positive for osteomyelitis and 26 children as positive for bone infarct (negative for osteomyelitis). The bone marrow signal intensity on T1-W fat-saturated imaging was not significant for the differentiation between bone infarct and osteomyelitis (P = 0.56). None of the additional evaluated imaging parameters on unenhanced MRI proved reliable in differentiating these diagnoses.\n\nBiomedical Question:\nUtility of unenhanced fat-suppressed T1-weighted MRI in children with sickle cell disease -- can it differentiate bone infarcts from acute osteomyelitis?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"The bone marrow signal intensity on unenhanced T1-W fat-saturated MR images is not a reliable criterion to differentiate bone infarcts from osteomyelitis in children.\",\n  \"evidence\": [\n    \"Based on the clinical standard, 5 children were classified as positive for osteomyelitis and 26 children as positive for bone infarct (negative for osteomyelitis). The bone marrow signal intensity on T1-W fat-saturated imaging was not significant for the differentiation between bone infarct and osteomyelitis (P = 0.56). None of the additional evaluated imaging parameters on unenhanced MRI proved reliable in differentiating these diagnoses.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_25432938", "pmid": "25432938", "task": "evidence_qa", "question": "Did Chile's traffic law reform push police enforcement?", "context": "BACKGROUND: The objective of the current study is to determine to what extent the reduction of Chile's traffic fatalities and injuries during 2000-2012 was related to the police traffic enforcement increment registered after the introduction of its 2005 traffic law reform.\n\nMETHODS: A unique dataset with assembled information from public institutions and analyses based on ordinary least square and robust random effects models was carried out. Dependent variables were traffic fatality and severe injury rates per population and vehicle fleet. Independent variables were: (1) presence of new national traffic law; (2) police officers per population; (3) number of traffic tickets per police officer; and (4) interaction effect of number of traffic tickets per police officer with traffic law reform. Oil prices, alcohol consumption, proportion of male population 15-24 years old, unemployment, road infrastructure investment, years' effects and regions' effects represented control variables.\n\nRESULTS: Empirical estimates from instrumental variables suggest that the enactment of the traffic law reform in interaction with number of traffic tickets per police officer is significantly associated with a decrease of 8% in traffic fatalities and 7% in severe injuries. Piecewise regression model results for the 2007-2012 period suggest that police traffic enforcement reduced traffic fatalities by 59% and severe injuries by 37%.", "ground_truth": {"decision": "yes", "answer": "Findings suggest that traffic law reforms in order to have an effect on both traffic fatality and injury rates reduction require changes in police enforcement practices. Last, this case also illustrates how the diffusion of successful road safety practices globally promoted by WHO and World Bank can be an important influence for enhancing national road safety practices.", "evidence": ["Empirical estimates from instrumental variables suggest that the enactment of the traffic law reform in interaction with number of traffic tickets per police officer is significantly associated with a decrease of 8% in traffic fatalities and 7% in severe injuries. Piecewise regression model results for the 2007-2012 period suggest that police traffic enforcement reduced traffic fatalities by 59% and severe injuries by 37%."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: The objective of the current study is to determine to what extent the reduction of Chile's traffic fatalities and injuries during 2000-2012 was related to the police traffic enforcement increment registered after the introduction of its 2005 traffic law reform.\n\nMETHODS: A unique dataset with assembled information from public institutions and analyses based on ordinary least square and robust random effects models was carried out. Dependent variables were traffic fatality and severe injury rates per population and vehicle fleet. Independent variables were: (1) presence of new national traffic law; (2) police officers per population; (3) number of traffic tickets per police officer; and (4) interaction effect of number of traffic tickets per police officer with traffic law reform. Oil prices, alcohol consumption, proportion of male population 15-24 years old, unemployment, road infrastructure investment, years' effects and regions' effects represented control variables.\n\nRESULTS: Empirical estimates from instrumental variables suggest that the enactment of the traffic law reform in interaction with number of traffic tickets per police officer is significantly associated with a decrease of 8% in traffic fatalities and 7% in severe injuries. Piecewise regression model results for the 2007-2012 period suggest that police traffic enforcement reduced traffic fatalities by 59% and severe injuries by 37%.\n\nBiomedical Question:\nDid Chile's traffic law reform push police enforcement?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Findings suggest that traffic law reforms in order to have an effect on both traffic fatality and injury rates reduction require changes in police enforcement practices. Last, this case also illustrates how the diffusion of successful road safety practices globally promoted by WHO and World Bank can be an important influence for enhancing national road safety practices.\",\n  \"evidence\": [\n    \"Empirical estimates from instrumental variables suggest that the enactment of the traffic law reform in interaction with number of traffic tickets per police officer is significantly associated with a decrease of 8% in traffic fatalities and 7% in severe injuries. Piecewise regression model results for the 2007-2012 period suggest that police traffic enforcement reduced traffic fatalities by 59% and severe injuries by 37%.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_24507422", "pmid": "24507422", "task": "evidence_qa", "question": "Can shape analysis differentiate free-floating internal carotid artery thrombus from atherosclerotic plaque in patients evaluated with CTA for stroke or transient ischemic attack?", "context": "RATIONALE AND OBJECTIVES: Patients presenting with transient ischemic attack or stroke may have symptom-related lesions on acute computed tomography angiography (CTA) such as free-floating intraluminal thrombus (FFT). It is difficult to distinguish FFT from carotid plaque, but the distinction is critical as management differs. By contouring the shape of these vascular lesions (\"virtual endarterectomy\"), advanced morphometric analysis can be performed. The objective of our study is to determine whether quantitative shape analysis can accurately differentiate FFT from atherosclerotic plaque.\n\nMATERIALS AND METHODS: We collected 23 consecutive cases of suspected carotid FFT seen on CTA (13 men, 65 ± 10 years; 10 women, 65.5 ± 8.8 years). True-positive FFT cases (FFT+) were defined as filling defects resolving with anticoagulant therapy versus false-positives (FFT-), which remained unchanged. Lesion volumes were extracted from CTA images and quantitative shape descriptors were computed. The five most discriminative features were used to construct receiver operator characteristic (ROC) curves and to generate three machine-learning classifiers. Average classification accuracy was determined by cross-validation.\n\nRESULTS: Follow-up imaging confirmed sixteen FFT+ and seven FFT- cases. Five shape descriptors delineated FFT+ from FFT- cases. The logistic regression model produced from combining all five shape features demonstrated a sensitivity of 87.5% and a specificity of 71.4% with an area under the ROC curve = 0.85 ± 0.09. Average accuracy for each classifier ranged from 65.2%-76.4%.", "ground_truth": {"decision": "yes", "answer": "We identified five quantitative shape descriptors of carotid FFT. This shape \"signature\" shows potential for supplementing conventional lesion characterization in cases of suspected FFT.", "evidence": ["Follow-up imaging confirmed sixteen FFT+ and seven FFT- cases. Five shape descriptors delineated FFT+ from FFT- cases. The logistic regression model produced from combining all five shape features demonstrated a sensitivity of 87.5% and a specificity of 71.4% with an area under the ROC curve = 0.85 ± 0.09. Average accuracy for each classifier ranged from 65.2%-76.4%."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nRATIONALE AND OBJECTIVES: Patients presenting with transient ischemic attack or stroke may have symptom-related lesions on acute computed tomography angiography (CTA) such as free-floating intraluminal thrombus (FFT). It is difficult to distinguish FFT from carotid plaque, but the distinction is critical as management differs. By contouring the shape of these vascular lesions (\"virtual endarterectomy\"), advanced morphometric analysis can be performed. The objective of our study is to determine whether quantitative shape analysis can accurately differentiate FFT from atherosclerotic plaque.\n\nMATERIALS AND METHODS: We collected 23 consecutive cases of suspected carotid FFT seen on CTA (13 men, 65 ± 10 years; 10 women, 65.5 ± 8.8 years). True-positive FFT cases (FFT+) were defined as filling defects resolving with anticoagulant therapy versus false-positives (FFT-), which remained unchanged. Lesion volumes were extracted from CTA images and quantitative shape descriptors were computed. The five most discriminative features were used to construct receiver operator characteristic (ROC) curves and to generate three machine-learning classifiers. Average classification accuracy was determined by cross-validation.\n\nRESULTS: Follow-up imaging confirmed sixteen FFT+ and seven FFT- cases. Five shape descriptors delineated FFT+ from FFT- cases. The logistic regression model produced from combining all five shape features demonstrated a sensitivity of 87.5% and a specificity of 71.4% with an area under the ROC curve = 0.85 ± 0.09. Average accuracy for each classifier ranged from 65.2%-76.4%.\n\nBiomedical Question:\nCan shape analysis differentiate free-floating internal carotid artery thrombus from atherosclerotic plaque in patients evaluated with CTA for stroke or transient ischemic attack?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"We identified five quantitative shape descriptors of carotid FFT. This shape \\\"signature\\\" shows potential for supplementing conventional lesion characterization in cases of suspected FFT.\",\n  \"evidence\": [\n    \"Follow-up imaging confirmed sixteen FFT+ and seven FFT- cases. Five shape descriptors delineated FFT+ from FFT- cases. The logistic regression model produced from combining all five shape features demonstrated a sensitivity of 87.5% and a specificity of 71.4% with an area under the ROC curve = 0.85 ± 0.09. Average accuracy for each classifier ranged from 65.2%-76.4%.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_10223070", "pmid": "10223070", "task": "evidence_qa", "question": "Is perforation of the appendix a risk factor for tubal infertility and ectopic pregnancy?", "context": "OBJECTIVE: To critically assess the evidence that appendiceal perforation is a risk factor for subsequent tubal infertility or ectopic pregnancy.\n\nDATA SOURCES: Epidemiologic studies investigating the relationship between appendectomy and infertility or ectopic pregnancy were identified by searching the MEDLINE database from 1966 to 1997. Appropriate citations were also extracted from a manual search of the bibliographies of selected papers.\n\nSTUDY SELECTION: Twenty-three articles were retrieved. Only 4 presented original data including comparisons to a nonexposed control group and they form the basis for this study.\n\nDATA EXTRACTION: Because the raw data or specific techniques of data analysis were not always explicitly described, indices of risk for exposure were extracted from the data as presented and were analysed without attempting to convert them to a common measure.\n\nDATA SYNTHESIS: Articles were assessed according to the criteria of the Evidence-Based Medicine Working Group for evaluating articles on harm. Review of the literature yielded estimates of the risk of adverse fertility outcomes ranging from 1.6 (95% confidence interval [CI] 1.1 to 2.5) for ectopic pregnancy after an appendectomy to 4.8 (95% CI 1.5 to 14.9) for tubal infertility from perforation of the appendix. Recall bias, and poor adjustment for confounding variables in some reports, weakened the validity of the studies.", "ground_truth": {"decision": "maybe", "answer": "The methodologic weaknesses of the studies do not permit acceptance of increased risk of tubal pregnancy or infertility as a consequence of perforation of the appendix, so a causal relationship cannot be supported by the data currently available. Only a well-designed case-control study with unbiased ascertainment of exposure and adjustment for confounding variables will provide a definitive answer.", "evidence": ["Articles were assessed according to the criteria of the Evidence-Based Medicine Working Group for evaluating articles on harm. Review of the literature yielded estimates of the risk of adverse fertility outcomes ranging from 1.6 (95% confidence interval [CI] 1.1 to 2.5) for ectopic pregnancy after an appendectomy to 4.8 (95% CI 1.5 to 14.9) for tubal infertility from perforation of the appendix. Recall bias, and poor adjustment for confounding variables in some reports, weakened the validity of the studies."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: To critically assess the evidence that appendiceal perforation is a risk factor for subsequent tubal infertility or ectopic pregnancy.\n\nDATA SOURCES: Epidemiologic studies investigating the relationship between appendectomy and infertility or ectopic pregnancy were identified by searching the MEDLINE database from 1966 to 1997. Appropriate citations were also extracted from a manual search of the bibliographies of selected papers.\n\nSTUDY SELECTION: Twenty-three articles were retrieved. Only 4 presented original data including comparisons to a nonexposed control group and they form the basis for this study.\n\nDATA EXTRACTION: Because the raw data or specific techniques of data analysis were not always explicitly described, indices of risk for exposure were extracted from the data as presented and were analysed without attempting to convert them to a common measure.\n\nDATA SYNTHESIS: Articles were assessed according to the criteria of the Evidence-Based Medicine Working Group for evaluating articles on harm. Review of the literature yielded estimates of the risk of adverse fertility outcomes ranging from 1.6 (95% confidence interval [CI] 1.1 to 2.5) for ectopic pregnancy after an appendectomy to 4.8 (95% CI 1.5 to 14.9) for tubal infertility from perforation of the appendix. Recall bias, and poor adjustment for confounding variables in some reports, weakened the validity of the studies.\n\nBiomedical Question:\nIs perforation of the appendix a risk factor for tubal infertility and ectopic pregnancy?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"The methodologic weaknesses of the studies do not permit acceptance of increased risk of tubal pregnancy or infertility as a consequence of perforation of the appendix, so a causal relationship cannot be supported by the data currently available. Only a well-designed case-control study with unbiased ascertainment of exposure and adjustment for confounding variables will provide a definitive answer.\",\n  \"evidence\": [\n    \"Articles were assessed according to the criteria of the Evidence-Based Medicine Working Group for evaluating articles on harm. Review of the literature yielded estimates of the risk of adverse fertility outcomes ranging from 1.6 (95% confidence interval [CI] 1.1 to 2.5) for ectopic pregnancy after an appendectomy to 4.8 (95% CI 1.5 to 14.9) for tubal infertility from perforation of the appendix. Recall bias, and poor adjustment for confounding variables in some reports, weakened the validity of the studies.\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_19054501", "pmid": "19054501", "task": "evidence_qa", "question": "Is motion perception deficit in schizophrenia a consequence of eye-tracking abnormality?", "context": "BACKGROUND: Studies have shown that schizophrenia patients have motion perception deficit, which was thought to cause eye-tracking abnormality in schizophrenia. However, eye movement closely interacts with motion perception. The known eye-tracking difficulties in schizophrenia patients may interact with their motion perception.\n\nMETHODS: Two speed discrimination experiments were conducted in a within-subject design. In experiment 1, the stimulus duration was 150 msec to minimize the chance of eye-tracking occurrence. In experiment 2, the duration was increased to 300 msec, increasing the possibility of eye movement intrusion. Regular eye-tracking performance was evaluated in a third experiment.\n\nRESULTS: At 150 msec, speed discrimination thresholds did not differ between schizophrenia patients (n = 38) and control subjects (n = 33). At 300 msec, patients had significantly higher thresholds than control subjects (p = .03). Furthermore, frequencies of eye tracking during the 300 msec stimulus were significantly correlated with speed discrimination in control subjects (p = .01) but not in patients, suggesting that eye-tracking initiation may benefit control subjects but not patients. The frequency of eye tracking during speed discrimination was not significantly related to regular eye-tracking performance.", "ground_truth": {"decision": "yes", "answer": "Speed discrimination, per se, is not impaired in schizophrenia patients. The observed abnormality appears to be a consequence of impairment in generating or integrating the feedback information from eye movements. This study introduces a novel approach to motion perception studies and highlights the importance of concurrently measuring eye movements to understand interactions between these two systems; the results argue for a conceptual revision regarding motion perception abnormality in schizophrenia.", "evidence": ["At 150 msec, speed discrimination thresholds did not differ between schizophrenia patients (n = 38) and control subjects (n = 33). At 300 msec, patients had significantly higher thresholds than control subjects (p = .03). Furthermore, frequencies of eye tracking during the 300 msec stimulus were significantly correlated with speed discrimination in control subjects (p = .01) but not in patients, suggesting that eye-tracking initiation may benefit control subjects but not patients. The frequency of eye tracking during speed discrimination was not significantly related to regular eye-tracking performance."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Studies have shown that schizophrenia patients have motion perception deficit, which was thought to cause eye-tracking abnormality in schizophrenia. However, eye movement closely interacts with motion perception. The known eye-tracking difficulties in schizophrenia patients may interact with their motion perception.\n\nMETHODS: Two speed discrimination experiments were conducted in a within-subject design. In experiment 1, the stimulus duration was 150 msec to minimize the chance of eye-tracking occurrence. In experiment 2, the duration was increased to 300 msec, increasing the possibility of eye movement intrusion. Regular eye-tracking performance was evaluated in a third experiment.\n\nRESULTS: At 150 msec, speed discrimination thresholds did not differ between schizophrenia patients (n = 38) and control subjects (n = 33). At 300 msec, patients had significantly higher thresholds than control subjects (p = .03). Furthermore, frequencies of eye tracking during the 300 msec stimulus were significantly correlated with speed discrimination in control subjects (p = .01) but not in patients, suggesting that eye-tracking initiation may benefit control subjects but not patients. The frequency of eye tracking during speed discrimination was not significantly related to regular eye-tracking performance.\n\nBiomedical Question:\nIs motion perception deficit in schizophrenia a consequence of eye-tracking abnormality?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Speed discrimination, per se, is not impaired in schizophrenia patients. The observed abnormality appears to be a consequence of impairment in generating or integrating the feedback information from eye movements. This study introduces a novel approach to motion perception studies and highlights the importance of concurrently measuring eye movements to understand interactions between these two systems; the results argue for a conceptual revision regarding motion perception abnormality in schizophrenia.\",\n  \"evidence\": [\n    \"At 150 msec, speed discrimination thresholds did not differ between schizophrenia patients (n = 38) and control subjects (n = 33). At 300 msec, patients had significantly higher thresholds than control subjects (p = .03). Furthermore, frequencies of eye tracking during the 300 msec stimulus were significantly correlated with speed discrimination in control subjects (p = .01) but not in patients, suggesting that eye-tracking initiation may benefit control subjects but not patients. The frequency of eye tracking during speed discrimination was not significantly related to regular eye-tracking performance.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_25571931", "pmid": "25571931", "task": "evidence_qa", "question": "Do elderly patients call 911 when presented with clinical scenarios suggestive of acute stroke?", "context": "BACKGROUND AND PURPOSE: Among patients with acute stroke symptoms, delay in hospital admission is the main obstacle for the use of thrombolytic therapy and other interventions associated with decreased mortality and disability. The primary aim of this study was to assess whether an elderly clinical population correctly endorsed the response to call for emergency services when presented with signs and symptoms of stroke using a standardized questionnaire.\n\nMETHODS: We performed a cross-sectional study among elderly out-patients (≥60 years) in Buenos Aires, Argentina randomly recruited from a government funded health clinic. The correct endorsement of intention to call 911 was assessed with the Stroke Action Test and the cut-off point was set at ≥75%. Knowledge of stroke and clinical and socio-demographic indicators were also collected and evaluated as predictors of correct endorsement using logistic regression.\n\nRESULTS: Among 367 elderly adults, 14% correctly endorsed intention to call 911. Presented with the most typical signs and symptoms, only 65% reported that they would call an ambulance. Amaurosis Fugax was the symptom for which was called the least (15%). On average, the correct response was chosen only 37% of the time. Compared to lower levels of education, higher levels were associated to correctly endorsed intention to call 911 (secondary School adjusted OR 3.53, 95% CI 1.59-7.86 and Tertiary/University adjusted OR 3.04, 95% CI 1.12-8.21).", "ground_truth": {"decision": "maybe", "answer": "These results suggest the need to provide interventions that are specifically designed to increase awareness of potential stroke signs and symptoms and appropriate subsequent clinical actions.", "evidence": ["Among 367 elderly adults, 14% correctly endorsed intention to call 911. Presented with the most typical signs and symptoms, only 65% reported that they would call an ambulance. Amaurosis Fugax was the symptom for which was called the least (15%). On average, the correct response was chosen only 37% of the time. Compared to lower levels of education, higher levels were associated to correctly endorsed intention to call 911 (secondary School adjusted OR 3.53, 95% CI 1.59-7.86 and Tertiary/University adjusted OR 3.04, 95% CI 1.12-8.21)."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND AND PURPOSE: Among patients with acute stroke symptoms, delay in hospital admission is the main obstacle for the use of thrombolytic therapy and other interventions associated with decreased mortality and disability. The primary aim of this study was to assess whether an elderly clinical population correctly endorsed the response to call for emergency services when presented with signs and symptoms of stroke using a standardized questionnaire.\n\nMETHODS: We performed a cross-sectional study among elderly out-patients (≥60 years) in Buenos Aires, Argentina randomly recruited from a government funded health clinic. The correct endorsement of intention to call 911 was assessed with the Stroke Action Test and the cut-off point was set at ≥75%. Knowledge of stroke and clinical and socio-demographic indicators were also collected and evaluated as predictors of correct endorsement using logistic regression.\n\nRESULTS: Among 367 elderly adults, 14% correctly endorsed intention to call 911. Presented with the most typical signs and symptoms, only 65% reported that they would call an ambulance. Amaurosis Fugax was the symptom for which was called the least (15%). On average, the correct response was chosen only 37% of the time. Compared to lower levels of education, higher levels were associated to correctly endorsed intention to call 911 (secondary School adjusted OR 3.53, 95% CI 1.59-7.86 and Tertiary/University adjusted OR 3.04, 95% CI 1.12-8.21).\n\nBiomedical Question:\nDo elderly patients call 911 when presented with clinical scenarios suggestive of acute stroke?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"These results suggest the need to provide interventions that are specifically designed to increase awareness of potential stroke signs and symptoms and appropriate subsequent clinical actions.\",\n  \"evidence\": [\n    \"Among 367 elderly adults, 14% correctly endorsed intention to call 911. Presented with the most typical signs and symptoms, only 65% reported that they would call an ambulance. Amaurosis Fugax was the symptom for which was called the least (15%). On average, the correct response was chosen only 37% of the time. Compared to lower levels of education, higher levels were associated to correctly endorsed intention to call 911 (secondary School adjusted OR 3.53, 95% CI 1.59-7.86 and Tertiary/University adjusted OR 3.04, 95% CI 1.12-8.21).\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_24614851", "pmid": "24614851", "task": "evidence_qa", "question": "Prognostic factors for cervical spondylotic amyotrophy: are signs of spinal cord involvement associated with the neurological prognosis?", "context": "OBJECTIVES: The purpose of this study was to clarify the prognostic factors for cervical spondylotic amyotrophy (CSA).\n\nMETHODS: The authors retrospectively reviewed the medical records of 47 consecutive patients with CSA in whom the presence/absence of the pyramidal tract sign was noted. We analyzed whether the age, sex, presence of diabetes mellitus, medication (vitamin B12), type of the most atrophic and impaired muscle, the muscle strength at the presentation, the presence of the pyramidal tract sign, magnetic resonance imaging (MRI) findings, including the presence and number of T2 high signal intensity areas (T2 HIA) in the spinal cord and the conversion to surgery were associated with the recovery of muscle strength in the patients. In addition, we also investigated whether the duration of symptoms before surgery and the type of surgery were associated with the recovery of muscle strength in patients who required conversion to surgical treatment.\n\nRESULTS: The presence of T2 HIA on MRI (P=0.002), the number of T2 HIA on MRI (P=0.002) and conversion to surgery (P=0.015) were found to be significantly associated with a poorer recovery at the observational final follow-up. Further, the presence of the pyramidal tract sign (P=0.043) was significantly associated with a poor recovery at the final follow-up after surgery.", "ground_truth": {"decision": "yes", "answer": "The presence of a high signal intensity change on T2-weighted MRI and the pyramidal tract sign can be used as prognostic factors for patients with CSA.", "evidence": ["The presence of T2 HIA on MRI (P=0.002), the number of T2 HIA on MRI (P=0.002) and conversion to surgery (P=0.015) were found to be significantly associated with a poorer recovery at the observational final follow-up. Further, the presence of the pyramidal tract sign (P=0.043) was significantly associated with a poor recovery at the final follow-up after surgery."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVES: The purpose of this study was to clarify the prognostic factors for cervical spondylotic amyotrophy (CSA).\n\nMETHODS: The authors retrospectively reviewed the medical records of 47 consecutive patients with CSA in whom the presence/absence of the pyramidal tract sign was noted. We analyzed whether the age, sex, presence of diabetes mellitus, medication (vitamin B12), type of the most atrophic and impaired muscle, the muscle strength at the presentation, the presence of the pyramidal tract sign, magnetic resonance imaging (MRI) findings, including the presence and number of T2 high signal intensity areas (T2 HIA) in the spinal cord and the conversion to surgery were associated with the recovery of muscle strength in the patients. In addition, we also investigated whether the duration of symptoms before surgery and the type of surgery were associated with the recovery of muscle strength in patients who required conversion to surgical treatment.\n\nRESULTS: The presence of T2 HIA on MRI (P=0.002), the number of T2 HIA on MRI (P=0.002) and conversion to surgery (P=0.015) were found to be significantly associated with a poorer recovery at the observational final follow-up. Further, the presence of the pyramidal tract sign (P=0.043) was significantly associated with a poor recovery at the final follow-up after surgery.\n\nBiomedical Question:\nPrognostic factors for cervical spondylotic amyotrophy: are signs of spinal cord involvement associated with the neurological prognosis?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"The presence of a high signal intensity change on T2-weighted MRI and the pyramidal tract sign can be used as prognostic factors for patients with CSA.\",\n  \"evidence\": [\n    \"The presence of T2 HIA on MRI (P=0.002), the number of T2 HIA on MRI (P=0.002) and conversion to surgery (P=0.015) were found to be significantly associated with a poorer recovery at the observational final follow-up. Further, the presence of the pyramidal tract sign (P=0.043) was significantly associated with a poor recovery at the final follow-up after surgery.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_18435678", "pmid": "18435678", "task": "evidence_qa", "question": "Kell alloimmunization in pregnancy: associated with fetal thrombocytopenia?", "context": "BACKGROUND AND OBJECTIVES: Kell haemolytic disease in pregnancies has been suggested to be associated with decreased fetal platelet counts. The aim of this study was to evaluate the incidence and clinical significance of fetal thrombocytopenia in pregnancies complicated by Kell alloimmunization.\n\nMATERIALS AND METHODS: In this retrospective cohort study, fetal platelet counts were performed in 42 pregnancies with severe Kell alloimmunization prior to the first intrauterine blood transfusion. Platelet counts from 318 first intrauterine transfusions in RhD alloimmunized pregnancies were used as controls.\n\nRESULTS: Fetal thrombocytopenia (platelet count<150 x 10(9)/l) was found in 4/42 (10%) in the Kell group and in 84/318 (26%) in the RhD group. None of the fetuses in the Kell alloimmunized pregnancies, including 15 with severe hydrops, had a clinically significant thrombocytopenia defined as a platelet count<50 x 10(9)/l. In the RhD alloimmunized pregnancies, 2/230 (1%) of the non-hydropic fetuses and 7/30 (23%) of the severely hydropic fetuses had a clinically significant thrombocytopenia.", "ground_truth": {"decision": "no", "answer": "In contrast to fetuses with severe anaemia and hydrops due to RhD alloimmunization, fetuses with severe anaemia due to Kell alloimmunization are generally not at risk for substantial thrombocytopenia.", "evidence": ["Fetal thrombocytopenia (platelet count<150 x 10(9)/l) was found in 4/42 (10%) in the Kell group and in 84/318 (26%) in the RhD group. None of the fetuses in the Kell alloimmunized pregnancies, including 15 with severe hydrops, had a clinically significant thrombocytopenia defined as a platelet count<50 x 10(9)/l. In the RhD alloimmunized pregnancies, 2/230 (1%) of the non-hydropic fetuses and 7/30 (23%) of the severely hydropic fetuses had a clinically significant thrombocytopenia."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND AND OBJECTIVES: Kell haemolytic disease in pregnancies has been suggested to be associated with decreased fetal platelet counts. The aim of this study was to evaluate the incidence and clinical significance of fetal thrombocytopenia in pregnancies complicated by Kell alloimmunization.\n\nMATERIALS AND METHODS: In this retrospective cohort study, fetal platelet counts were performed in 42 pregnancies with severe Kell alloimmunization prior to the first intrauterine blood transfusion. Platelet counts from 318 first intrauterine transfusions in RhD alloimmunized pregnancies were used as controls.\n\nRESULTS: Fetal thrombocytopenia (platelet count<150 x 10(9)/l) was found in 4/42 (10%) in the Kell group and in 84/318 (26%) in the RhD group. None of the fetuses in the Kell alloimmunized pregnancies, including 15 with severe hydrops, had a clinically significant thrombocytopenia defined as a platelet count<50 x 10(9)/l. In the RhD alloimmunized pregnancies, 2/230 (1%) of the non-hydropic fetuses and 7/30 (23%) of the severely hydropic fetuses had a clinically significant thrombocytopenia.\n\nBiomedical Question:\nKell alloimmunization in pregnancy: associated with fetal thrombocytopenia?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"In contrast to fetuses with severe anaemia and hydrops due to RhD alloimmunization, fetuses with severe anaemia due to Kell alloimmunization are generally not at risk for substantial thrombocytopenia.\",\n  \"evidence\": [\n    \"Fetal thrombocytopenia (platelet count<150 x 10(9)/l) was found in 4/42 (10%) in the Kell group and in 84/318 (26%) in the RhD group. None of the fetuses in the Kell alloimmunized pregnancies, including 15 with severe hydrops, had a clinically significant thrombocytopenia defined as a platelet count<50 x 10(9)/l. In the RhD alloimmunized pregnancies, 2/230 (1%) of the non-hydropic fetuses and 7/30 (23%) of the severely hydropic fetuses had a clinically significant thrombocytopenia.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_28143468", "pmid": "28143468", "task": "evidence_qa", "question": "Are performance measurement systems useful?", "context": "BACKGROUND: Prior literature identified the use of Performance Measurement Systems (PMS) as crucial in addressing improved processes of care. Moreover, a strategic use of PMS has been found to enhance quality, compared to non-strategic use, although a clear understanding of this linkage is still to be achieved. This paper deals with the test of direct and indirect models related to the link between the strategic use of PMS and the level of improved processes in health care organizations. Indirect models were mediated by the degree of perceived managerial discretion.\n\nMETHODS: A PLS analysis on a survey of 97 Italian managers working for health care organizations in the Lombardy region was conducted. The response rate was 77.6%.\n\nRESULTS: The strategic use of PMS in health care organizations directly and significantly (p < 0.001) enhances performance in terms of improved processes. Perceived managerial discretion is positively and significantly (p < 0.001) affected by the strategic use of PMS, whereas the mediation effect is non-significant.", "ground_truth": {"decision": "yes", "answer": "This study contributes to the literature investigating the design and implementation of a non-financial measurement tool, such as the non-financial information included into a balanced scorecard (BSC), in health care organizations. Managers in health care organizations can benefit from the strategic use of PMS to effectively allocate their time to strategic opportunities and threats, which might arise and affect organizational, output-related performance, such as improving processes.", "evidence": ["The strategic use of PMS in health care organizations directly and significantly (p < 0.001) enhances performance in terms of improved processes. Perceived managerial discretion is positively and significantly (p < 0.001) affected by the strategic use of PMS, whereas the mediation effect is non-significant."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Prior literature identified the use of Performance Measurement Systems (PMS) as crucial in addressing improved processes of care. Moreover, a strategic use of PMS has been found to enhance quality, compared to non-strategic use, although a clear understanding of this linkage is still to be achieved. This paper deals with the test of direct and indirect models related to the link between the strategic use of PMS and the level of improved processes in health care organizations. Indirect models were mediated by the degree of perceived managerial discretion.\n\nMETHODS: A PLS analysis on a survey of 97 Italian managers working for health care organizations in the Lombardy region was conducted. The response rate was 77.6%.\n\nRESULTS: The strategic use of PMS in health care organizations directly and significantly (p < 0.001) enhances performance in terms of improved processes. Perceived managerial discretion is positively and significantly (p < 0.001) affected by the strategic use of PMS, whereas the mediation effect is non-significant.\n\nBiomedical Question:\nAre performance measurement systems useful?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"This study contributes to the literature investigating the design and implementation of a non-financial measurement tool, such as the non-financial information included into a balanced scorecard (BSC), in health care organizations. Managers in health care organizations can benefit from the strategic use of PMS to effectively allocate their time to strategic opportunities and threats, which might arise and affect organizational, output-related performance, such as improving processes.\",\n  \"evidence\": [\n    \"The strategic use of PMS in health care organizations directly and significantly (p < 0.001) enhances performance in terms of improved processes. Perceived managerial discretion is positively and significantly (p < 0.001) affected by the strategic use of PMS, whereas the mediation effect is non-significant.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_26536001", "pmid": "26536001", "task": "evidence_qa", "question": "Is There an Additional Value of Using Somatostatin Receptor Subtype 2a Immunohistochemistry Compared to Somatostatin Receptor Scintigraphy Uptake in Predicting Gastroenteropancreatic Neuroendocrine Tumor Response?", "context": "BACKGROUND AND AIMS: It is unknown whether tumoral somatostatin receptor subtype 2a (sst2a) immunohistochemistry (IHC) has additional value compared to somatostatin receptor scintigraphy (SRS) uptake using OctreoScan® in predicting response to peptide receptor radiotherapy using 177Lu-octreotate (PRRT) in patients with gastroenteropancreatic neuroendocrine tumors (GEP-NETs). The aims of this study were: (1) to establish the percentage of sst2a immunopositivity in GEP-NET samples of PRRT-treated patients, (2) to determine the relationship between best GEP-NET response using RECIST 1.0 criteria 1 year after PRRT and tumoral sst2a IHC, and (3) to compare characteristics of patients with sst2a IHC-negative and -positive tumors.\n\nMETHODS: All 73 consecutive patients were selected for PRRT based on a positive SRS. Radiological response was scored according to RECIST 1.0 criteria. sst2a status was detected on tumor samples by IHC.\n\nRESULTS: In total, 93% of GEP-NET samples showed sst2a IHC positivity. No statistically significant relationship was observed between in vitro sst2a expression and in vivo best GEP-NET response 1 year after PRRT (p = 0.47). Sex, primary tumor site, disease stage, ENETS TNM classification, Ki-67 index, highest serum chromogranin-A level, and highest neuron-specific enolase level were not significantly different between patients with negative and positive sst2a tumoral IHC with the exception of age at diagnosis (p = 0.007).", "ground_truth": {"decision": "no", "answer": "sst2a IHC of tumor samples has no additional value compared to SRS uptake using OctreoScan® in predicting tumor response after PRRT.", "evidence": ["In total, 93% of GEP-NET samples showed sst2a IHC positivity. No statistically significant relationship was observed between in vitro sst2a expression and in vivo best GEP-NET response 1 year after PRRT (p = 0.47). Sex, primary tumor site, disease stage, ENETS TNM classification, Ki-67 index, highest serum chromogranin-A level, and highest neuron-specific enolase level were not significantly different between patients with negative and positive sst2a tumoral IHC with the exception of age at diagnosis (p = 0.007)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND AND AIMS: It is unknown whether tumoral somatostatin receptor subtype 2a (sst2a) immunohistochemistry (IHC) has additional value compared to somatostatin receptor scintigraphy (SRS) uptake using OctreoScan® in predicting response to peptide receptor radiotherapy using 177Lu-octreotate (PRRT) in patients with gastroenteropancreatic neuroendocrine tumors (GEP-NETs). The aims of this study were: (1) to establish the percentage of sst2a immunopositivity in GEP-NET samples of PRRT-treated patients, (2) to determine the relationship between best GEP-NET response using RECIST 1.0 criteria 1 year after PRRT and tumoral sst2a IHC, and (3) to compare characteristics of patients with sst2a IHC-negative and -positive tumors.\n\nMETHODS: All 73 consecutive patients were selected for PRRT based on a positive SRS. Radiological response was scored according to RECIST 1.0 criteria. sst2a status was detected on tumor samples by IHC.\n\nRESULTS: In total, 93% of GEP-NET samples showed sst2a IHC positivity. No statistically significant relationship was observed between in vitro sst2a expression and in vivo best GEP-NET response 1 year after PRRT (p = 0.47). Sex, primary tumor site, disease stage, ENETS TNM classification, Ki-67 index, highest serum chromogranin-A level, and highest neuron-specific enolase level were not significantly different between patients with negative and positive sst2a tumoral IHC with the exception of age at diagnosis (p = 0.007).\n\nBiomedical Question:\nIs There an Additional Value of Using Somatostatin Receptor Subtype 2a Immunohistochemistry Compared to Somatostatin Receptor Scintigraphy Uptake in Predicting Gastroenteropancreatic Neuroendocrine Tumor Response?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"sst2a IHC of tumor samples has no additional value compared to SRS uptake using OctreoScan® in predicting tumor response after PRRT.\",\n  \"evidence\": [\n    \"In total, 93% of GEP-NET samples showed sst2a IHC positivity. No statistically significant relationship was observed between in vitro sst2a expression and in vivo best GEP-NET response 1 year after PRRT (p = 0.47). Sex, primary tumor site, disease stage, ENETS TNM classification, Ki-67 index, highest serum chromogranin-A level, and highest neuron-specific enolase level were not significantly different between patients with negative and positive sst2a tumoral IHC with the exception of age at diagnosis (p = 0.007).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_16432652", "pmid": "16432652", "task": "evidence_qa", "question": "Transgastric endoscopic splenectomy: is it possible?", "context": "BACKGROUND: We have previously reported the feasibility of diagnostic and therapeutic peritoneoscopy including liver biopsy, gastrojejunostomy, and tubal ligation by an oral transgastric approach. We present results of per-oral transgastric splenectomy in a porcine model. The goal of this study was to determine the technical feasibility of per-oral transgastric splenectomy using a flexible endoscope.\n\nMETHODS: We performed acute experiments on 50-kg pigs. All animals were fed liquids for 3 days prior to procedure. The procedures were performed under general anesthesia with endotracheal intubation. The flexible endoscope was passed per orally into the stomach and puncture of the gastric wall was performed with a needle knife. The puncture was extended to create a 1.5-cm incision using a pull-type sphincterotome, and a double-channel endoscope was advanced into the peritoneal cavity. The peritoneal cavity was insufflated with air through the endoscope. The spleen was visualized. The splenic vessels were ligated with endoscopic loops and clips, and then mesentery was dissected using electrocautery.\n\nRESULTS: Endoscopic splenectomy was performed on six pigs. There were no complications during gastric incision and entrance into the peritoneal cavity. Visualization of the spleen and other intraperitoneal organs was very good. Ligation of the splenic vessels and mobilization of the spleen were achieved using commercially available devices and endoscopic accessories.", "ground_truth": {"decision": "yes", "answer": "Transgastric endoscopic splenectomy in a porcine model appears technically feasible. Additional long-term survival experiments are planned.", "evidence": ["Endoscopic splenectomy was performed on six pigs. There were no complications during gastric incision and entrance into the peritoneal cavity. Visualization of the spleen and other intraperitoneal organs was very good. Ligation of the splenic vessels and mobilization of the spleen were achieved using commercially available devices and endoscopic accessories."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: We have previously reported the feasibility of diagnostic and therapeutic peritoneoscopy including liver biopsy, gastrojejunostomy, and tubal ligation by an oral transgastric approach. We present results of per-oral transgastric splenectomy in a porcine model. The goal of this study was to determine the technical feasibility of per-oral transgastric splenectomy using a flexible endoscope.\n\nMETHODS: We performed acute experiments on 50-kg pigs. All animals were fed liquids for 3 days prior to procedure. The procedures were performed under general anesthesia with endotracheal intubation. The flexible endoscope was passed per orally into the stomach and puncture of the gastric wall was performed with a needle knife. The puncture was extended to create a 1.5-cm incision using a pull-type sphincterotome, and a double-channel endoscope was advanced into the peritoneal cavity. The peritoneal cavity was insufflated with air through the endoscope. The spleen was visualized. The splenic vessels were ligated with endoscopic loops and clips, and then mesentery was dissected using electrocautery.\n\nRESULTS: Endoscopic splenectomy was performed on six pigs. There were no complications during gastric incision and entrance into the peritoneal cavity. Visualization of the spleen and other intraperitoneal organs was very good. Ligation of the splenic vessels and mobilization of the spleen were achieved using commercially available devices and endoscopic accessories.\n\nBiomedical Question:\nTransgastric endoscopic splenectomy: is it possible?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Transgastric endoscopic splenectomy in a porcine model appears technically feasible. Additional long-term survival experiments are planned.\",\n  \"evidence\": [\n    \"Endoscopic splenectomy was performed on six pigs. There were no complications during gastric incision and entrance into the peritoneal cavity. Visualization of the spleen and other intraperitoneal organs was very good. Ligation of the splenic vessels and mobilization of the spleen were achieved using commercially available devices and endoscopic accessories.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_21952349", "pmid": "21952349", "task": "evidence_qa", "question": "Remote ischemic postconditioning: does it protect against ischemic damage in percutaneous coronary revascularization?", "context": "OBJECTIVE: Myocardial damage that is associated with percutaneous coronary intervention (PCI) partially affects the results of the procedure, and is related to medium-term cardiovascular death. Remote postischemic conditioning might reduce the myocardial lesions that are associated with PCI, but perhaps less so in diabetics. The aim of this study was to evaluate the protective effect of remote postischemic conditioning in patients undergoing elective PCI for stable angina or non-ST elevation acute coronary syndrome with troponin<1 ng/ml at the time of randomization.\n\nMETHODS: This randomized single-blinded single-center clinical trial involved 320 patients undergoing elective PCI who were randomized to either receive three 5-min cycles of ischemia by inflation of a cuff on the non-dominant arm to 200 mm Hg (remote postischemic conditioning) or to placebo (uninflated cuff). The primary outcome variable was the maximum increase in troponin in the first 24 h. The secondary outcome variable was readmission due to heart failure or cardiovascular mortality after 1 year of follow-up. In addition, a diabetic population was studied.", "ground_truth": {"decision": "yes", "answer": "This clinical trial evaluated the possible reduction in intervention-related myocardial damage that was attributable to remote postischemic conditioning.", "evidence": ["This randomized single-blinded single-center clinical trial involved 320 patients undergoing elective PCI who were randomized to either receive three 5-min cycles of ischemia by inflation of a cuff on the non-dominant arm to 200 mm Hg (remote postischemic conditioning) or to placebo (uninflated cuff). The primary outcome variable was the maximum increase in troponin in the first 24 h. The secondary outcome variable was readmission due to heart failure or cardiovascular mortality after 1 year of follow-up. In addition, a diabetic population was studied."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: Myocardial damage that is associated with percutaneous coronary intervention (PCI) partially affects the results of the procedure, and is related to medium-term cardiovascular death. Remote postischemic conditioning might reduce the myocardial lesions that are associated with PCI, but perhaps less so in diabetics. The aim of this study was to evaluate the protective effect of remote postischemic conditioning in patients undergoing elective PCI for stable angina or non-ST elevation acute coronary syndrome with troponin<1 ng/ml at the time of randomization.\n\nMETHODS: This randomized single-blinded single-center clinical trial involved 320 patients undergoing elective PCI who were randomized to either receive three 5-min cycles of ischemia by inflation of a cuff on the non-dominant arm to 200 mm Hg (remote postischemic conditioning) or to placebo (uninflated cuff). The primary outcome variable was the maximum increase in troponin in the first 24 h. The secondary outcome variable was readmission due to heart failure or cardiovascular mortality after 1 year of follow-up. In addition, a diabetic population was studied.\n\nBiomedical Question:\nRemote ischemic postconditioning: does it protect against ischemic damage in percutaneous coronary revascularization?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"This clinical trial evaluated the possible reduction in intervention-related myocardial damage that was attributable to remote postischemic conditioning.\",\n  \"evidence\": [\n    \"This randomized single-blinded single-center clinical trial involved 320 patients undergoing elective PCI who were randomized to either receive three 5-min cycles of ischemia by inflation of a cuff on the non-dominant arm to 200 mm Hg (remote postischemic conditioning) or to placebo (uninflated cuff). The primary outcome variable was the maximum increase in troponin in the first 24 h. The secondary outcome variable was readmission due to heart failure or cardiovascular mortality after 1 year of follow-up. In addition, a diabetic population was studied.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_24748473", "pmid": "24748473", "task": "evidence_qa", "question": "Are there risk factors that increase the rate of staple line leakage in patients undergoing primary sleeve gastrectomy for morbid obesity?", "context": "BACKGROUND: Laparoscopic sleeve gastrectomy (LSG) is currently being performed with increasing frequency worldwide. It offers an excellent weight loss and resolution of comorbidities in the short term with a very low incidence of complications. However, the ever present risk of a staple line leak is still a major concern.\n\nMETHODS: Since 2005, data from obese patients that undergo bariatric procedures in Germany are prospectively registered in an online database and analyzed at the Institute of Quality Assurance in Surgical Medicine. For the current analysis, all patients that had undergone primary sleeve gastrectomy for morbid obesity within a 7-year period were considered.\n\nRESULTS: Using the GBSR, data from 5.400 LSGs were considered for analysis. Staple line leak rate decreased during the study period from 6.5 to 1.4 %. Male gender, higher BMI, concomitant sleep apnea, conversion to laparotomy, longer operation time, use of both buttresses and oversewing, and the occurrence of intraoperative complications were associated with a significantly higher leakage rate. On multivariate analysis, operation time and year of procedure only had a significant impact on staple line leak rate.", "ground_truth": {"decision": "yes", "answer": "The results of the current study demonstrated that there are factors that increase the risk of a leakage which would enable surgeons to define risk groups, to more carefully select patients, and to offer a closer follow-up during the postoperative course with early recognition and adequate treatment. All future efforts should be focused on a further reduction of serious complications to make the LSG a widely accepted and safer procedure.", "evidence": ["Using the GBSR, data from 5.400 LSGs were considered for analysis. Staple line leak rate decreased during the study period from 6.5 to 1.4 %. Male gender, higher BMI, concomitant sleep apnea, conversion to laparotomy, longer operation time, use of both buttresses and oversewing, and the occurrence of intraoperative complications were associated with a significantly higher leakage rate. On multivariate analysis, operation time and year of procedure only had a significant impact on staple line leak rate."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Laparoscopic sleeve gastrectomy (LSG) is currently being performed with increasing frequency worldwide. It offers an excellent weight loss and resolution of comorbidities in the short term with a very low incidence of complications. However, the ever present risk of a staple line leak is still a major concern.\n\nMETHODS: Since 2005, data from obese patients that undergo bariatric procedures in Germany are prospectively registered in an online database and analyzed at the Institute of Quality Assurance in Surgical Medicine. For the current analysis, all patients that had undergone primary sleeve gastrectomy for morbid obesity within a 7-year period were considered.\n\nRESULTS: Using the GBSR, data from 5.400 LSGs were considered for analysis. Staple line leak rate decreased during the study period from 6.5 to 1.4 %. Male gender, higher BMI, concomitant sleep apnea, conversion to laparotomy, longer operation time, use of both buttresses and oversewing, and the occurrence of intraoperative complications were associated with a significantly higher leakage rate. On multivariate analysis, operation time and year of procedure only had a significant impact on staple line leak rate.\n\nBiomedical Question:\nAre there risk factors that increase the rate of staple line leakage in patients undergoing primary sleeve gastrectomy for morbid obesity?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"The results of the current study demonstrated that there are factors that increase the risk of a leakage which would enable surgeons to define risk groups, to more carefully select patients, and to offer a closer follow-up during the postoperative course with early recognition and adequate treatment. All future efforts should be focused on a further reduction of serious complications to make the LSG a widely accepted and safer procedure.\",\n  \"evidence\": [\n    \"Using the GBSR, data from 5.400 LSGs were considered for analysis. Staple line leak rate decreased during the study period from 6.5 to 1.4 %. Male gender, higher BMI, concomitant sleep apnea, conversion to laparotomy, longer operation time, use of both buttresses and oversewing, and the occurrence of intraoperative complications were associated with a significantly higher leakage rate. On multivariate analysis, operation time and year of procedure only had a significant impact on staple line leak rate.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_21164063", "pmid": "21164063", "task": "evidence_qa", "question": "Is there a role for fondaparinux in perioperative bridging?", "context": "PURPOSE: A possible role for fondaparinux as a bridging agent in the perioperative setting is explored.\n\nSUMMARY: Anticoagulation guidelines provide minimal direction on the perioperative use of fondaparinux. Fondaparinux's extended half-life of 17-21 hours complicates its use as a perioperative bridging therapy. The ideal time for discontinuation before surgery is an issue, particularly in surgeries with a high bleeding risk or in which neuraxial anesthesia is used. Guidance for perioperative bridging with fondaparinux must be derived from pharmacokinetic data, surgical prophylaxis trials, case reports, and anesthesia guidelines. Published trials used fondaparinux sodium 2.5 mg daily for venous thromboembolism prophylaxis in surgical patients, and the majority avoided its use before surgery in patients receiving neuraxial anesthesia. Three case reports cited the use of fondaparinux sodium as perioperative bridge therapy; one used a 2.5-mg dose, and the other two used a full treatment dose of 7.5 mg. Furthermore, professional anesthesia guidelines conflict in their recommendations regarding the timing of drug administration with neuraxial catheter use. For these reasons, it may be optimal to avoid fondaparinux use before surgery. In some instances, the use of low-molecular-weight heparin or inpatient use of i.v. unfractionated heparin is not possible, is contraindicated, or has limited efficacy, such as a patient with history of heparin-induced thrombocytopenia or antithrombin III deficiency. Fondaparinux may have a role in bridge therapy for these patients.", "ground_truth": {"decision": "no", "answer": "The role of fondaparinux in perioperative bridge therapy has not been established, and there are some important limitations to its use as a routine bridging agent.", "evidence": ["Anticoagulation guidelines provide minimal direction on the perioperative use of fondaparinux. Fondaparinux's extended half-life of 17-21 hours complicates its use as a perioperative bridging therapy. The ideal time for discontinuation before surgery is an issue, particularly in surgeries with a high bleeding risk or in which neuraxial anesthesia is used. Guidance for perioperative bridging with fondaparinux must be derived from pharmacokinetic data, surgical prophylaxis trials, case reports, and anesthesia guidelines. Published trials used fondaparinux sodium 2.5 mg daily for venous thromboembolism prophylaxis in surgical patients, and the majority avoided its use before surgery in patients receiving neuraxial anesthesia. Three case reports cited the use of fondaparinux sodium as perioperative bridge therapy; one used a 2.5-mg dose, and the other two used a full treatment dose of 7.5 mg. Furthermore, professional anesthesia guidelines conflict in their recommendations regarding the timing of drug administration with neuraxial catheter use. For these reasons, it may be optimal to avoid fondaparinux use before surgery. In some instances, the use of low-molecular-weight heparin or inpatient use of i.v. unfractionated heparin is not possible, is contraindicated, or has limited efficacy, such as a patient with history of heparin-induced thrombocytopenia or antithrombin III deficiency. Fondaparinux may have a role in bridge therapy for these patients."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: A possible role for fondaparinux as a bridging agent in the perioperative setting is explored.\n\nSUMMARY: Anticoagulation guidelines provide minimal direction on the perioperative use of fondaparinux. Fondaparinux's extended half-life of 17-21 hours complicates its use as a perioperative bridging therapy. The ideal time for discontinuation before surgery is an issue, particularly in surgeries with a high bleeding risk or in which neuraxial anesthesia is used. Guidance for perioperative bridging with fondaparinux must be derived from pharmacokinetic data, surgical prophylaxis trials, case reports, and anesthesia guidelines. Published trials used fondaparinux sodium 2.5 mg daily for venous thromboembolism prophylaxis in surgical patients, and the majority avoided its use before surgery in patients receiving neuraxial anesthesia. Three case reports cited the use of fondaparinux sodium as perioperative bridge therapy; one used a 2.5-mg dose, and the other two used a full treatment dose of 7.5 mg. Furthermore, professional anesthesia guidelines conflict in their recommendations regarding the timing of drug administration with neuraxial catheter use. For these reasons, it may be optimal to avoid fondaparinux use before surgery. In some instances, the use of low-molecular-weight heparin or inpatient use of i.v. unfractionated heparin is not possible, is contraindicated, or has limited efficacy, such as a patient with history of heparin-induced thrombocytopenia or antithrombin III deficiency. Fondaparinux may have a role in bridge therapy for these patients.\n\nBiomedical Question:\nIs there a role for fondaparinux in perioperative bridging?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"The role of fondaparinux in perioperative bridge therapy has not been established, and there are some important limitations to its use as a routine bridging agent.\",\n  \"evidence\": [\n    \"Anticoagulation guidelines provide minimal direction on the perioperative use of fondaparinux. Fondaparinux's extended half-life of 17-21 hours complicates its use as a perioperative bridging therapy. The ideal time for discontinuation before surgery is an issue, particularly in surgeries with a high bleeding risk or in which neuraxial anesthesia is used. Guidance for perioperative bridging with fondaparinux must be derived from pharmacokinetic data, surgical prophylaxis trials, case reports, and anesthesia guidelines. Published trials used fondaparinux sodium 2.5 mg daily for venous thromboembolism prophylaxis in surgical patients, and the majority avoided its use before surgery in patients receiving neuraxial anesthesia. Three case reports cited the use of fondaparinux sodium as perioperative bridge therapy; one used a 2.5-mg dose, and the other two used a full treatment dose of 7.5 mg. Furthermore, professional anesthesia guidelines conflict in their recommendations regarding the timing of drug administration with neuraxial catheter use. For these reasons, it may be optimal to avoid fondaparinux use before surgery. In some instances, the use of low-molecular-weight heparin or inpatient use of i.v. unfractionated heparin is not possible, is contraindicated, or has limited efficacy, such as a patient with history of heparin-induced thrombocytopenia or antithrombin III deficiency. Fondaparinux may have a role in bridge therapy for these patients.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_18507507", "pmid": "18507507", "task": "evidence_qa", "question": "The promise of specialty pharmaceuticals: are they worth the price?", "context": "BACKGROUND: Specialty pharmaceuticals have evolved beyond their status as niche drugs designed to treat rare conditions and are now poised to become the standard of care in a wide variety of common chronic illnesses. Due in part to the cost of these therapies, payers are increasingly demanding evidence of their value. Determining the value of these medications is hampered by a lack of robust pharmacoeconomic data.\n\nOBJECTIVE: To outline emerging strategies and case study examples for the medical and pharmacy benefits management of specialty pharmaceuticals.\n\nSUMMARY: The promise of specialty pharmaceuticals: increased life expectancy, improved quality of life, enhanced workplace productivity, decreased burden of disease, and reduced health care spending comes at a significant cost. These agents require special handling, administration, patient education, clinical support, and risk mitigation. Additionally, specialty drugs require distribution systems that ensure appropriate patient selection and data collection. With the specialty pharmaceutical pipeline overflowing with new medicines and an aging population increasingly relying on these novel treatments to treat common diseases, the challenge of managing the costs associated with these agents can be daunting. Aided by sophisticated pharmacoeconomic models to assess value, the cost impacts of these specialty drugs can be appropriately controlled.", "ground_truth": {"decision": "yes", "answer": "Current evidence suggests that when used in targeted patient populations, specialty pharmaceuticals may represent a good health care value.", "evidence": ["The promise of specialty pharmaceuticals: increased life expectancy, improved quality of life, enhanced workplace productivity, decreased burden of disease, and reduced health care spending comes at a significant cost. These agents require special handling, administration, patient education, clinical support, and risk mitigation. Additionally, specialty drugs require distribution systems that ensure appropriate patient selection and data collection. With the specialty pharmaceutical pipeline overflowing with new medicines and an aging population increasingly relying on these novel treatments to treat common diseases, the challenge of managing the costs associated with these agents can be daunting. Aided by sophisticated pharmacoeconomic models to assess value, the cost impacts of these specialty drugs can be appropriately controlled."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Specialty pharmaceuticals have evolved beyond their status as niche drugs designed to treat rare conditions and are now poised to become the standard of care in a wide variety of common chronic illnesses. Due in part to the cost of these therapies, payers are increasingly demanding evidence of their value. Determining the value of these medications is hampered by a lack of robust pharmacoeconomic data.\n\nOBJECTIVE: To outline emerging strategies and case study examples for the medical and pharmacy benefits management of specialty pharmaceuticals.\n\nSUMMARY: The promise of specialty pharmaceuticals: increased life expectancy, improved quality of life, enhanced workplace productivity, decreased burden of disease, and reduced health care spending comes at a significant cost. These agents require special handling, administration, patient education, clinical support, and risk mitigation. Additionally, specialty drugs require distribution systems that ensure appropriate patient selection and data collection. With the specialty pharmaceutical pipeline overflowing with new medicines and an aging population increasingly relying on these novel treatments to treat common diseases, the challenge of managing the costs associated with these agents can be daunting. Aided by sophisticated pharmacoeconomic models to assess value, the cost impacts of these specialty drugs can be appropriately controlled.\n\nBiomedical Question:\nThe promise of specialty pharmaceuticals: are they worth the price?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Current evidence suggests that when used in targeted patient populations, specialty pharmaceuticals may represent a good health care value.\",\n  \"evidence\": [\n    \"The promise of specialty pharmaceuticals: increased life expectancy, improved quality of life, enhanced workplace productivity, decreased burden of disease, and reduced health care spending comes at a significant cost. These agents require special handling, administration, patient education, clinical support, and risk mitigation. Additionally, specialty drugs require distribution systems that ensure appropriate patient selection and data collection. With the specialty pharmaceutical pipeline overflowing with new medicines and an aging population increasingly relying on these novel treatments to treat common diseases, the challenge of managing the costs associated with these agents can be daunting. Aided by sophisticated pharmacoeconomic models to assess value, the cost impacts of these specialty drugs can be appropriately controlled.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_15539888", "pmid": "15539888", "task": "evidence_qa", "question": "Is the atopy patch test with house dust mites specific for atopic dermatitis?", "context": "BACKGROUND: The atopy patch test (APT), namely the patch test with aeroallergens, is regarded as specific for patients with atopic dermatitis (AD), but small numbers of positive APT were reported in the past also in atopic subjects without dermatitis and in healthy persons.\n\nOBJECTIVE: The aim of this study was to evaluate the response to the APT with house dust mites (HDM) in subjects nonaffected by AD and to compare the outcomes observed in these cases with those pointed out in AD patients, evaluating also the differences between two allergen extracts manufactured at different purifications and concentrations.\n\nMETHODS: Forty-seven atopic subjects without eczema (AWE), 33 nonatopic (NA) subjects and 77 adult AD patients were patch tested with an extract of purified bodies of HDM at 20% and with another extract of whole bodies of HDM at 30%, the latter corresponding to 300 microg/g of Der p 1. The reproducibility of APT was also tested in 8 AD patients, in 37 AWE subjects and in 19 NA subjects.\n\nRESULTS: Positive responses with extract at 20% were observed in 29 (37.7%) AD, in 5 (10.6%) AWE and in 4 (12.1%) NA subjects. The APT with HDM at 30% was positive in 32 (41.6%) AD, 9 (19.1%) AWE and 4 (12.1%) NA persons. The rates of positivity and the intensity scores of responses were significantly different between AD and non-AD subjects (p<0.01). The reproducibility of the APT in the three groups was satisfactory.", "ground_truth": {"decision": "yes", "answer": "These observations lead to conclude that the APT with HDM is positive also in non-AD subjects but it is probably more specific for AD.", "evidence": ["Positive responses with extract at 20% were observed in 29 (37.7%) AD, in 5 (10.6%) AWE and in 4 (12.1%) NA subjects. The APT with HDM at 30% was positive in 32 (41.6%) AD, 9 (19.1%) AWE and 4 (12.1%) NA persons. The rates of positivity and the intensity scores of responses were significantly different between AD and non-AD subjects (p<0.01). The reproducibility of the APT in the three groups was satisfactory."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: The atopy patch test (APT), namely the patch test with aeroallergens, is regarded as specific for patients with atopic dermatitis (AD), but small numbers of positive APT were reported in the past also in atopic subjects without dermatitis and in healthy persons.\n\nOBJECTIVE: The aim of this study was to evaluate the response to the APT with house dust mites (HDM) in subjects nonaffected by AD and to compare the outcomes observed in these cases with those pointed out in AD patients, evaluating also the differences between two allergen extracts manufactured at different purifications and concentrations.\n\nMETHODS: Forty-seven atopic subjects without eczema (AWE), 33 nonatopic (NA) subjects and 77 adult AD patients were patch tested with an extract of purified bodies of HDM at 20% and with another extract of whole bodies of HDM at 30%, the latter corresponding to 300 microg/g of Der p 1. The reproducibility of APT was also tested in 8 AD patients, in 37 AWE subjects and in 19 NA subjects.\n\nRESULTS: Positive responses with extract at 20% were observed in 29 (37.7%) AD, in 5 (10.6%) AWE and in 4 (12.1%) NA subjects. The APT with HDM at 30% was positive in 32 (41.6%) AD, 9 (19.1%) AWE and 4 (12.1%) NA persons. The rates of positivity and the intensity scores of responses were significantly different between AD and non-AD subjects (p<0.01). The reproducibility of the APT in the three groups was satisfactory.\n\nBiomedical Question:\nIs the atopy patch test with house dust mites specific for atopic dermatitis?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"These observations lead to conclude that the APT with HDM is positive also in non-AD subjects but it is probably more specific for AD.\",\n  \"evidence\": [\n    \"Positive responses with extract at 20% were observed in 29 (37.7%) AD, in 5 (10.6%) AWE and in 4 (12.1%) NA subjects. The APT with HDM at 30% was positive in 32 (41.6%) AD, 9 (19.1%) AWE and 4 (12.1%) NA persons. The rates of positivity and the intensity scores of responses were significantly different between AD and non-AD subjects (p<0.01). The reproducibility of the APT in the three groups was satisfactory.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_24901580", "pmid": "24901580", "task": "evidence_qa", "question": "Is scintigraphy a guideline method in determining amputation levels in diabetic foot?", "context": "BACKGROUND: In this study, we aimed to evaluate the potential use of a 3-phase bone scintigraphy method to determine the level of amputation on treatment cost, morbidity and mortality, reamputation rates, and the duration of hospitalization in diabetic foot.\n\nMETHODS: Thirty patients who were admitted to our clinic between September 2008 and July 2009, with diabetic foot were included. All patients were evaluated according to age, gender, diabetes duration, 3-phase bone scintigraphy, Doppler ultrasound, amputation/reamputation levels, and hospitalization periods. Patients underwent 3-phase bone scintigraphy using technetium-99m methylene diphosphonate, and the most distal site of the region displaying perfusion during the perfusion and early blood flow phase was marked as the amputation level. Amputation level was determined by 3-phase bone scintigraphy, Doppler ultrasound, and inspection of the infection-free clear region during surgery.\n\nRESULTS: The amputation levels of the patients were as follows: finger in six (20%), ray amputation in five (16.6%), transmetatarsal in one (3.3%), Lisfranc in two (6.6%), Chopart in seven (23.3%), Syme in one (3.3%), below-the-knee in six (20%), above the knee in one (3.3%), knee disarticulation in one (3.3%), and two patients underwent amputation at other centers. After primary amputation, reamputation was performed on seven patients, and one patient was treated with debridement for wound site problems. No mortality was encountered during study.", "ground_truth": {"decision": "yes", "answer": "We conclude that 3-phase bone scintigraphy prior to surgery could be a useful method to determine the amputation level in a diabetic foot. We conclude that further, comparative, more comprehensive, long-term, and controlled studies are required.", "evidence": ["The amputation levels of the patients were as follows: finger in six (20%), ray amputation in five (16.6%), transmetatarsal in one (3.3%), Lisfranc in two (6.6%), Chopart in seven (23.3%), Syme in one (3.3%), below-the-knee in six (20%), above the knee in one (3.3%), knee disarticulation in one (3.3%), and two patients underwent amputation at other centers. After primary amputation, reamputation was performed on seven patients, and one patient was treated with debridement for wound site problems. No mortality was encountered during study."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: In this study, we aimed to evaluate the potential use of a 3-phase bone scintigraphy method to determine the level of amputation on treatment cost, morbidity and mortality, reamputation rates, and the duration of hospitalization in diabetic foot.\n\nMETHODS: Thirty patients who were admitted to our clinic between September 2008 and July 2009, with diabetic foot were included. All patients were evaluated according to age, gender, diabetes duration, 3-phase bone scintigraphy, Doppler ultrasound, amputation/reamputation levels, and hospitalization periods. Patients underwent 3-phase bone scintigraphy using technetium-99m methylene diphosphonate, and the most distal site of the region displaying perfusion during the perfusion and early blood flow phase was marked as the amputation level. Amputation level was determined by 3-phase bone scintigraphy, Doppler ultrasound, and inspection of the infection-free clear region during surgery.\n\nRESULTS: The amputation levels of the patients were as follows: finger in six (20%), ray amputation in five (16.6%), transmetatarsal in one (3.3%), Lisfranc in two (6.6%), Chopart in seven (23.3%), Syme in one (3.3%), below-the-knee in six (20%), above the knee in one (3.3%), knee disarticulation in one (3.3%), and two patients underwent amputation at other centers. After primary amputation, reamputation was performed on seven patients, and one patient was treated with debridement for wound site problems. No mortality was encountered during study.\n\nBiomedical Question:\nIs scintigraphy a guideline method in determining amputation levels in diabetic foot?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"We conclude that 3-phase bone scintigraphy prior to surgery could be a useful method to determine the amputation level in a diabetic foot. We conclude that further, comparative, more comprehensive, long-term, and controlled studies are required.\",\n  \"evidence\": [\n    \"The amputation levels of the patients were as follows: finger in six (20%), ray amputation in five (16.6%), transmetatarsal in one (3.3%), Lisfranc in two (6.6%), Chopart in seven (23.3%), Syme in one (3.3%), below-the-knee in six (20%), above the knee in one (3.3%), knee disarticulation in one (3.3%), and two patients underwent amputation at other centers. After primary amputation, reamputation was performed on seven patients, and one patient was treated with debridement for wound site problems. No mortality was encountered during study.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_26578404", "pmid": "26578404", "task": "evidence_qa", "question": "Patient-Controlled Therapy of Breathlessness in Palliative Care: A New Therapeutic Concept for Opioid Administration?", "context": "CONTEXT: Breathlessness is one of the most distressing symptoms experienced by patients with advanced cancer and noncancer diagnoses alike. Often, severity of breathlessness increases quickly, calling for rapid symptom control. Oral, buccal, and parenteral routes of provider-controlled drug administration have been described. It is unclear whether patient-controlled therapy (PCT) systems would be an additional treatment option.\n\nOBJECTIVES: To investigate whether intravenous opioid PCT can be an effective therapeutic method to reduce breathlessness in patients with advanced disease. Secondary aims were to study the feasibility and acceptance of opioid PCT in patients with refractory breathlessness.\n\nMETHODS: This was a pilot observational study with 18 inpatients with advanced disease and refractory breathlessness receiving opioid PCT. Breathlessness was measured on a self-reported numeric rating scale. Richmond Agitation Sedation Scale scores, Palliative Performance Scale scores, vital signs, and a self-developed patient satisfaction questionnaire were used for measuring secondary outcomes. Descriptive and interference analyses (Friedman test) and post hoc analyses (Wilcoxon tests and Bonferroni corrections) were performed.\n\nRESULTS: Eighteen of 815 patients (advanced cancer; median age = 57.5 years [range 36-81]; 77.8% female) received breathlessness symptom control with opioid PCT; daily morphine equivalent dose at Day 1 was median = 20.3 mg (5.0-49.6 mg); Day 2: 13.0 mg (1.0-78.5 mg); Day 3: 16.0 mg (8.3-47.0 mg). Numeric rating scale of current breathlessness decreased (baseline: median = 5 [range 1-10]; Day 1: median = 4 [range 0-8], P < 0.01; Day 2: median = 4 [range 0-5], P < 0.01). Physiological parameters were stable over time. On Day 3, 12/12 patients confirmed that this mode of application provided relief of breathlessness.", "ground_truth": {"decision": "yes", "answer": "Opioid PCT is a feasible and acceptable therapeutic method to reduce refractory breathlessness in palliative care patients.", "evidence": ["Eighteen of 815 patients (advanced cancer; median age = 57.5 years [range 36-81]; 77.8% female) received breathlessness symptom control with opioid PCT; daily morphine equivalent dose at Day 1 was median = 20.3 mg (5.0-49.6 mg); Day 2: 13.0 mg (1.0-78.5 mg); Day 3: 16.0 mg (8.3-47.0 mg). Numeric rating scale of current breathlessness decreased (baseline: median = 5 [range 1-10]; Day 1: median = 4 [range 0-8], P < 0.01; Day 2: median = 4 [range 0-5], P < 0.01). Physiological parameters were stable over time. On Day 3, 12/12 patients confirmed that this mode of application provided relief of breathlessness."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nCONTEXT: Breathlessness is one of the most distressing symptoms experienced by patients with advanced cancer and noncancer diagnoses alike. Often, severity of breathlessness increases quickly, calling for rapid symptom control. Oral, buccal, and parenteral routes of provider-controlled drug administration have been described. It is unclear whether patient-controlled therapy (PCT) systems would be an additional treatment option.\n\nOBJECTIVES: To investigate whether intravenous opioid PCT can be an effective therapeutic method to reduce breathlessness in patients with advanced disease. Secondary aims were to study the feasibility and acceptance of opioid PCT in patients with refractory breathlessness.\n\nMETHODS: This was a pilot observational study with 18 inpatients with advanced disease and refractory breathlessness receiving opioid PCT. Breathlessness was measured on a self-reported numeric rating scale. Richmond Agitation Sedation Scale scores, Palliative Performance Scale scores, vital signs, and a self-developed patient satisfaction questionnaire were used for measuring secondary outcomes. Descriptive and interference analyses (Friedman test) and post hoc analyses (Wilcoxon tests and Bonferroni corrections) were performed.\n\nRESULTS: Eighteen of 815 patients (advanced cancer; median age = 57.5 years [range 36-81]; 77.8% female) received breathlessness symptom control with opioid PCT; daily morphine equivalent dose at Day 1 was median = 20.3 mg (5.0-49.6 mg); Day 2: 13.0 mg (1.0-78.5 mg); Day 3: 16.0 mg (8.3-47.0 mg). Numeric rating scale of current breathlessness decreased (baseline: median = 5 [range 1-10]; Day 1: median = 4 [range 0-8], P < 0.01; Day 2: median = 4 [range 0-5], P < 0.01). Physiological parameters were stable over time. On Day 3, 12/12 patients confirmed that this mode of application provided relief of breathlessness.\n\nBiomedical Question:\nPatient-Controlled Therapy of Breathlessness in Palliative Care: A New Therapeutic Concept for Opioid Administration?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Opioid PCT is a feasible and acceptable therapeutic method to reduce refractory breathlessness in palliative care patients.\",\n  \"evidence\": [\n    \"Eighteen of 815 patients (advanced cancer; median age = 57.5 years [range 36-81]; 77.8% female) received breathlessness symptom control with opioid PCT; daily morphine equivalent dose at Day 1 was median = 20.3 mg (5.0-49.6 mg); Day 2: 13.0 mg (1.0-78.5 mg); Day 3: 16.0 mg (8.3-47.0 mg). Numeric rating scale of current breathlessness decreased (baseline: median = 5 [range 1-10]; Day 1: median = 4 [range 0-8], P < 0.01; Day 2: median = 4 [range 0-5], P < 0.01). Physiological parameters were stable over time. On Day 3, 12/12 patients confirmed that this mode of application provided relief of breathlessness.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_23283159", "pmid": "23283159", "task": "evidence_qa", "question": "Is obesity a risk factor for wheezing among adolescents?", "context": "PURPOSE: To investigate the effect of obesity at the start of adolescence on the prevalence, incidence and maintenance of chest wheezing among individuals aged 11-15 years in a birth cohort in a developing country.\n\nMETHODS: The seventh follow-up of the 1993 Pelotas birth cohort occurred in 2004 (individuals aged 10-11 years). Between January and August 2008, the eighth follow-up of the cohort was conducted. All the individuals of the original cohort who were alive (who were then adolescents aged between 14 and 15 years) were targets for the study. The International Study of Asthma and Allergies in Childhood (ISAAC) questionnaire was used to define wheezing. In addition to the body mass index (BMI), used to define obesity by the World Health Organization (WHO) criteria, we assessed skinfold thickness.\n\nRESULTS: From the original cohort, 4,349 individuals were located (85.7% follow-up rate). The prevalence of chest wheezing at 11 and 15 years were 13.5% (95% CI: 12.5%-14.5%) and 12.1% (95% CI: 11.1%-13.1%), respectively. The prevalence of wheezing at both times was 4.5% (95% CI: 3.9%-5.1%) and the incidence of wheezing was 7.5% (95% CI: 6.7%-8.3%). Independent of the effect of various confounding variables, the prevalence of wheezing at 15 years was 50% greater among obese individuals than among eutrophic individuals at 11 years (RR 1.53; 95% CI: 1.14-2.05). The greater the skinfold tertile at 11 years, the higher the prevalence of wheezing at 15 years was (p = .011). Weight status and skinfolds did not present any association with incident wheezing. After controlling for confounding factors, the risk of persistent wheezing among obese individuals at 11 years was 1.82 (95% CI: 1.30-2.54).", "ground_truth": {"decision": "yes", "answer": "Since obesity at the start of adolescence is associated with asthma symptom persistence, prevention and treatment of obesity may reduce avoidable healthcare costs and disease burden.", "evidence": ["From the original cohort, 4,349 individuals were located (85.7% follow-up rate). The prevalence of chest wheezing at 11 and 15 years were 13.5% (95% CI: 12.5%-14.5%) and 12.1% (95% CI: 11.1%-13.1%), respectively. The prevalence of wheezing at both times was 4.5% (95% CI: 3.9%-5.1%) and the incidence of wheezing was 7.5% (95% CI: 6.7%-8.3%). Independent of the effect of various confounding variables, the prevalence of wheezing at 15 years was 50% greater among obese individuals than among eutrophic individuals at 11 years (RR 1.53; 95% CI: 1.14-2.05). The greater the skinfold tertile at 11 years, the higher the prevalence of wheezing at 15 years was (p = .011). Weight status and skinfolds did not present any association with incident wheezing. After controlling for confounding factors, the risk of persistent wheezing among obese individuals at 11 years was 1.82 (95% CI: 1.30-2.54)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: To investigate the effect of obesity at the start of adolescence on the prevalence, incidence and maintenance of chest wheezing among individuals aged 11-15 years in a birth cohort in a developing country.\n\nMETHODS: The seventh follow-up of the 1993 Pelotas birth cohort occurred in 2004 (individuals aged 10-11 years). Between January and August 2008, the eighth follow-up of the cohort was conducted. All the individuals of the original cohort who were alive (who were then adolescents aged between 14 and 15 years) were targets for the study. The International Study of Asthma and Allergies in Childhood (ISAAC) questionnaire was used to define wheezing. In addition to the body mass index (BMI), used to define obesity by the World Health Organization (WHO) criteria, we assessed skinfold thickness.\n\nRESULTS: From the original cohort, 4,349 individuals were located (85.7% follow-up rate). The prevalence of chest wheezing at 11 and 15 years were 13.5% (95% CI: 12.5%-14.5%) and 12.1% (95% CI: 11.1%-13.1%), respectively. The prevalence of wheezing at both times was 4.5% (95% CI: 3.9%-5.1%) and the incidence of wheezing was 7.5% (95% CI: 6.7%-8.3%). Independent of the effect of various confounding variables, the prevalence of wheezing at 15 years was 50% greater among obese individuals than among eutrophic individuals at 11 years (RR 1.53; 95% CI: 1.14-2.05). The greater the skinfold tertile at 11 years, the higher the prevalence of wheezing at 15 years was (p = .011). Weight status and skinfolds did not present any association with incident wheezing. After controlling for confounding factors, the risk of persistent wheezing among obese individuals at 11 years was 1.82 (95% CI: 1.30-2.54).\n\nBiomedical Question:\nIs obesity a risk factor for wheezing among adolescents?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Since obesity at the start of adolescence is associated with asthma symptom persistence, prevention and treatment of obesity may reduce avoidable healthcare costs and disease burden.\",\n  \"evidence\": [\n    \"From the original cohort, 4,349 individuals were located (85.7% follow-up rate). The prevalence of chest wheezing at 11 and 15 years were 13.5% (95% CI: 12.5%-14.5%) and 12.1% (95% CI: 11.1%-13.1%), respectively. The prevalence of wheezing at both times was 4.5% (95% CI: 3.9%-5.1%) and the incidence of wheezing was 7.5% (95% CI: 6.7%-8.3%). Independent of the effect of various confounding variables, the prevalence of wheezing at 15 years was 50% greater among obese individuals than among eutrophic individuals at 11 years (RR 1.53; 95% CI: 1.14-2.05). The greater the skinfold tertile at 11 years, the higher the prevalence of wheezing at 15 years was (p = .011). Weight status and skinfolds did not present any association with incident wheezing. After controlling for confounding factors, the risk of persistent wheezing among obese individuals at 11 years was 1.82 (95% CI: 1.30-2.54).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_12238307", "pmid": "12238307", "task": "evidence_qa", "question": "Vaccine protection in the elderly: are Austrian seniors adequately protected by vaccinations?", "context": "OBJECTIVE: The aim of the study was to evaluate, if elderly persons are sufficiently protected against infectious diseases by vaccination.\n\nPROBANDS AND METHODS: 300 elderly (>60 years) and 300 young (<35 years) persons from five Austrian cities were recruited according to the criteria of a field study. Antibody concentrations against tetanus, diphtheria, tickborne encephalitis and influenza were assessed by ELISA or by haemagglutination inhibition test. Disease and vaccination histories were recorded.\n\nRESULTS: The results of the study demonstrate that protection against infectious diseases was frequently insufficient in the elderly. This was partly due to the fact that old persons were not vaccinated according to recommended strategies. However, low antibody concentration and a short duration of protective humoral immunity were also observed in many elderly persons in spite of regular vaccination. This was not only the case in frail, but also in healthy elderlies.", "ground_truth": {"decision": "no", "answer": "The data demonstrate that vaccination has a relatively weak and short-lasting effect in old age. The results of the study should stimulate discussions about strategies how vaccinations can be made more effective in old age. Improved campaigns, shortened vaccination intervals as well as the design of novel vaccines tailored to fulfill the specific demands of the aging immune system are imaginable.", "evidence": ["The results of the study demonstrate that protection against infectious diseases was frequently insufficient in the elderly. This was partly due to the fact that old persons were not vaccinated according to recommended strategies. However, low antibody concentration and a short duration of protective humoral immunity were also observed in many elderly persons in spite of regular vaccination. This was not only the case in frail, but also in healthy elderlies."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: The aim of the study was to evaluate, if elderly persons are sufficiently protected against infectious diseases by vaccination.\n\nPROBANDS AND METHODS: 300 elderly (>60 years) and 300 young (<35 years) persons from five Austrian cities were recruited according to the criteria of a field study. Antibody concentrations against tetanus, diphtheria, tickborne encephalitis and influenza were assessed by ELISA or by haemagglutination inhibition test. Disease and vaccination histories were recorded.\n\nRESULTS: The results of the study demonstrate that protection against infectious diseases was frequently insufficient in the elderly. This was partly due to the fact that old persons were not vaccinated according to recommended strategies. However, low antibody concentration and a short duration of protective humoral immunity were also observed in many elderly persons in spite of regular vaccination. This was not only the case in frail, but also in healthy elderlies.\n\nBiomedical Question:\nVaccine protection in the elderly: are Austrian seniors adequately protected by vaccinations?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"The data demonstrate that vaccination has a relatively weak and short-lasting effect in old age. The results of the study should stimulate discussions about strategies how vaccinations can be made more effective in old age. Improved campaigns, shortened vaccination intervals as well as the design of novel vaccines tailored to fulfill the specific demands of the aging immune system are imaginable.\",\n  \"evidence\": [\n    \"The results of the study demonstrate that protection against infectious diseases was frequently insufficient in the elderly. This was partly due to the fact that old persons were not vaccinated according to recommended strategies. However, low antibody concentration and a short duration of protective humoral immunity were also observed in many elderly persons in spite of regular vaccination. This was not only the case in frail, but also in healthy elderlies.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_20828836", "pmid": "20828836", "task": "evidence_qa", "question": "Is discordance in TEOAE and AABR outcomes predictable in newborns?", "context": "OBJECTIVE: To determine the perinatal predictors of discordant screening outcomes based on a two-stage screening protocol with transient-evoked otoacoustic emissions (TEOAE) and automated auditory brainstem response (AABR).\n\nMETHODS: A cross-sectional study of infants tested with TEOAE and AABR under a hospital-based universal newborn hearing screening program in Lagos, Nigeria. Maternal and infant factors associated with discordant TEOAE and AABR outcomes were determined with multivariable logistic regression analyses adjusting for potential confounding factors.\n\nRESULTS: Of the 4718 infants enrolled under the program 1745 (36.9%) completed both TEOAE and AABR. Of this group, 1060 (60.7%) passed both TEOAE and AABR (\"true-negatives\"); 92 (5.3%) failed both TEOAE and AABR (\"true-positive\"); 571 (32.7%) failed TEOAE but passed AABR (\"false-positives\") while 22 (1.3%) passed TEOAE but failed AABR (\"false-negatives\"). Infants with false-positives were likely to be admitted into well-baby nursery (p=0.001), belong to mothers who attended antenatal care (p=0.010) or who delivered vaginally (p<0.001) compared to infants with true-negatives while infants with true-positives were also more likely to be delivered vaginally (p=0.002) or admitted into well-baby nursery (p=0.035) compared to infants with false-negatives. Infants with true-positives were significantly more likely to be delivered vaginally (p<0.001) and have severe hyperbilirubinemia (p=0.045) compared with infants with true-negatives. No association was observed between false-negatives and true-negatives. Antenatal care status, mode of delivery and nursery type were useful predictors of discordant outcomes among all infants undergoing screening (c-statistic=0.73).", "ground_truth": {"decision": "yes", "answer": "Given the available screening technologies, discordant TEOAE and AABR may be inevitable for some categories of hearing loss among apparently healthy newborns whose mothers received prenatal care. The potential limitations of perinatal morbidities as basis of targeted screening for such cases therefore merit further consideration.", "evidence": ["Of the 4718 infants enrolled under the program 1745 (36.9%) completed both TEOAE and AABR. Of this group, 1060 (60.7%) passed both TEOAE and AABR (\"true-negatives\"); 92 (5.3%) failed both TEOAE and AABR (\"true-positive\"); 571 (32.7%) failed TEOAE but passed AABR (\"false-positives\") while 22 (1.3%) passed TEOAE but failed AABR (\"false-negatives\"). Infants with false-positives were likely to be admitted into well-baby nursery (p=0.001), belong to mothers who attended antenatal care (p=0.010) or who delivered vaginally (p<0.001) compared to infants with true-negatives while infants with true-positives were also more likely to be delivered vaginally (p=0.002) or admitted into well-baby nursery (p=0.035) compared to infants with false-negatives. Infants with true-positives were significantly more likely to be delivered vaginally (p<0.001) and have severe hyperbilirubinemia (p=0.045) compared with infants with true-negatives. No association was observed between false-negatives and true-negatives. Antenatal care status, mode of delivery and nursery type were useful predictors of discordant outcomes among all infants undergoing screening (c-statistic=0.73)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: To determine the perinatal predictors of discordant screening outcomes based on a two-stage screening protocol with transient-evoked otoacoustic emissions (TEOAE) and automated auditory brainstem response (AABR).\n\nMETHODS: A cross-sectional study of infants tested with TEOAE and AABR under a hospital-based universal newborn hearing screening program in Lagos, Nigeria. Maternal and infant factors associated with discordant TEOAE and AABR outcomes were determined with multivariable logistic regression analyses adjusting for potential confounding factors.\n\nRESULTS: Of the 4718 infants enrolled under the program 1745 (36.9%) completed both TEOAE and AABR. Of this group, 1060 (60.7%) passed both TEOAE and AABR (\"true-negatives\"); 92 (5.3%) failed both TEOAE and AABR (\"true-positive\"); 571 (32.7%) failed TEOAE but passed AABR (\"false-positives\") while 22 (1.3%) passed TEOAE but failed AABR (\"false-negatives\"). Infants with false-positives were likely to be admitted into well-baby nursery (p=0.001), belong to mothers who attended antenatal care (p=0.010) or who delivered vaginally (p<0.001) compared to infants with true-negatives while infants with true-positives were also more likely to be delivered vaginally (p=0.002) or admitted into well-baby nursery (p=0.035) compared to infants with false-negatives. Infants with true-positives were significantly more likely to be delivered vaginally (p<0.001) and have severe hyperbilirubinemia (p=0.045) compared with infants with true-negatives. No association was observed between false-negatives and true-negatives. Antenatal care status, mode of delivery and nursery type were useful predictors of discordant outcomes among all infants undergoing screening (c-statistic=0.73).\n\nBiomedical Question:\nIs discordance in TEOAE and AABR outcomes predictable in newborns?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Given the available screening technologies, discordant TEOAE and AABR may be inevitable for some categories of hearing loss among apparently healthy newborns whose mothers received prenatal care. The potential limitations of perinatal morbidities as basis of targeted screening for such cases therefore merit further consideration.\",\n  \"evidence\": [\n    \"Of the 4718 infants enrolled under the program 1745 (36.9%) completed both TEOAE and AABR. Of this group, 1060 (60.7%) passed both TEOAE and AABR (\\\"true-negatives\\\"); 92 (5.3%) failed both TEOAE and AABR (\\\"true-positive\\\"); 571 (32.7%) failed TEOAE but passed AABR (\\\"false-positives\\\") while 22 (1.3%) passed TEOAE but failed AABR (\\\"false-negatives\\\"). Infants with false-positives were likely to be admitted into well-baby nursery (p=0.001), belong to mothers who attended antenatal care (p=0.010) or who delivered vaginally (p<0.001) compared to infants with true-negatives while infants with true-positives were also more likely to be delivered vaginally (p=0.002) or admitted into well-baby nursery (p=0.035) compared to infants with false-negatives. Infants with true-positives were significantly more likely to be delivered vaginally (p<0.001) and have severe hyperbilirubinemia (p=0.045) compared with infants with true-negatives. No association was observed between false-negatives and true-negatives. Antenatal care status, mode of delivery and nursery type were useful predictors of discordant outcomes among all infants undergoing screening (c-statistic=0.73).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_12153648", "pmid": "12153648", "task": "evidence_qa", "question": "Does birth center care during a woman's first pregnancy have any impact on her future reproduction?", "context": "BACKGROUND: Women's experiences of childbirth may affect their future reproduction, and the model of care affects their experiences, suggesting that a causal link may exist between model of care and future reproduction. The study objective was to examine whether the birth center model of care during a woman's first pregnancy affects whether or not she has a second baby, and on the spacing to the next birth.\n\nMETHODS: Between October 1989 and July 1993, a total of 1860 women at low medical risk in early pregnancy, who participated in a randomized controlled trial of in-hospital birth center care versus standard care, gave birth. The 1063 primiparas in the trial, 543 in the birth center group and 520 in the standard care group, were included in a secondary analysis in which women's personal identification codes were linked to the Swedish National Birth Register, which included information about their subsequent birth during the following 7 to 10 years. Time to an event curves were constructed by means of the Kaplan Meier method.\n\nRESULTS: The observation period after the first birth was on average 8.8 years in the birth center group and 8.7 years in the standard care group. No statistical difference was found between the groups in time to second birth, which was 2.85 and 2.82 years, respectively (median; log-rank 1.26; p=0.26).", "ground_truth": {"decision": "no", "answer": "A woman's model of care, such as birth center care, during her first pregnancy does not seem to be a sufficiently important factor to affect subsequent reproduction in Sweden.", "evidence": ["The observation period after the first birth was on average 8.8 years in the birth center group and 8.7 years in the standard care group. No statistical difference was found between the groups in time to second birth, which was 2.85 and 2.82 years, respectively (median; log-rank 1.26; p=0.26)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Women's experiences of childbirth may affect their future reproduction, and the model of care affects their experiences, suggesting that a causal link may exist between model of care and future reproduction. The study objective was to examine whether the birth center model of care during a woman's first pregnancy affects whether or not she has a second baby, and on the spacing to the next birth.\n\nMETHODS: Between October 1989 and July 1993, a total of 1860 women at low medical risk in early pregnancy, who participated in a randomized controlled trial of in-hospital birth center care versus standard care, gave birth. The 1063 primiparas in the trial, 543 in the birth center group and 520 in the standard care group, were included in a secondary analysis in which women's personal identification codes were linked to the Swedish National Birth Register, which included information about their subsequent birth during the following 7 to 10 years. Time to an event curves were constructed by means of the Kaplan Meier method.\n\nRESULTS: The observation period after the first birth was on average 8.8 years in the birth center group and 8.7 years in the standard care group. No statistical difference was found between the groups in time to second birth, which was 2.85 and 2.82 years, respectively (median; log-rank 1.26; p=0.26).\n\nBiomedical Question:\nDoes birth center care during a woman's first pregnancy have any impact on her future reproduction?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"A woman's model of care, such as birth center care, during her first pregnancy does not seem to be a sufficiently important factor to affect subsequent reproduction in Sweden.\",\n  \"evidence\": [\n    \"The observation period after the first birth was on average 8.8 years in the birth center group and 8.7 years in the standard care group. No statistical difference was found between the groups in time to second birth, which was 2.85 and 2.82 years, respectively (median; log-rank 1.26; p=0.26).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_15381614", "pmid": "15381614", "task": "evidence_qa", "question": "Cutaneous melanoma in a multiethnic population: is this a different disease?", "context": "HYPOTHESIS: Cutaneous melanoma in nonwhite persons has a manifestation and a prognosis that are different than those of cutaneous melanoma in white persons.\n\nDESIGN: Case series.\n\nSETTING: Tertiary care university-affiliated community medical center located in a multiethnic state in which white persons are a minority of the population.\n\nPATIENTS: Consecutive series of 357 patients with melanoma seen between January 1994 and August 2003.\n\nMAIN OUTCOME MEASURES: Ethnicity, age, sex, primary site, tumor thickness, nodal status, stage at diagnosis, and survival.\n\nRESULTS: There were 208 men and 149 women who ranged in age from 15 to 93 years (mean, 58 years). Twenty-two patients initially had unknown primary sites. Of these 357 patients, 67 (18.7%) were nonwhite. There was no statistically significant difference in the age (P =.10) or sex (P =.57) distribution of these 2 populations. Nonwhite patients at initial diagnosis had thicker tumors (P =.002), more frequently had ulcerated primary tumors (P<.001), more frequently had positive nodes (P =.004), and were at a more advanced stage (P =.002) than their white counterparts. The anatomic distribution between the 2 populations was significantly different (P<.001), with a high incidence of melanoma on the sole and subungual locations and a substantially less frequent occurrence on the head and neck, trunk, and extremities in the nonwhite population when compared with the white population. The overall survival rate of the nonwhite patients was significantly worse than that of the white patients, but when stratified by stage at initial diagnosis, there was no difference in outcome.", "ground_truth": {"decision": "maybe", "answer": "In a multiethnic population, cutaneous melanoma in nonwhite persons is unusual but not rare. Although the diagnoses are distinctly different at initial examinations, suggesting a potential biological component, stage-for-stage outcomes are similar between white and nonwhite persons and suggest a need for early diagnostic interventions with unusual pigmented lesions in nonwhite persons.", "evidence": ["There were 208 men and 149 women who ranged in age from 15 to 93 years (mean, 58 years). Twenty-two patients initially had unknown primary sites. Of these 357 patients, 67 (18.7%) were nonwhite. There was no statistically significant difference in the age (P =.10) or sex (P =.57) distribution of these 2 populations. Nonwhite patients at initial diagnosis had thicker tumors (P =.002), more frequently had ulcerated primary tumors (P<.001), more frequently had positive nodes (P =.004), and were at a more advanced stage (P =.002) than their white counterparts. The anatomic distribution between the 2 populations was significantly different (P<.001), with a high incidence of melanoma on the sole and subungual locations and a substantially less frequent occurrence on the head and neck, trunk, and extremities in the nonwhite population when compared with the white population. The overall survival rate of the nonwhite patients was significantly worse than that of the white patients, but when stratified by stage at initial diagnosis, there was no difference in outcome."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nHYPOTHESIS: Cutaneous melanoma in nonwhite persons has a manifestation and a prognosis that are different than those of cutaneous melanoma in white persons.\n\nDESIGN: Case series.\n\nSETTING: Tertiary care university-affiliated community medical center located in a multiethnic state in which white persons are a minority of the population.\n\nPATIENTS: Consecutive series of 357 patients with melanoma seen between January 1994 and August 2003.\n\nMAIN OUTCOME MEASURES: Ethnicity, age, sex, primary site, tumor thickness, nodal status, stage at diagnosis, and survival.\n\nRESULTS: There were 208 men and 149 women who ranged in age from 15 to 93 years (mean, 58 years). Twenty-two patients initially had unknown primary sites. Of these 357 patients, 67 (18.7%) were nonwhite. There was no statistically significant difference in the age (P =.10) or sex (P =.57) distribution of these 2 populations. Nonwhite patients at initial diagnosis had thicker tumors (P =.002), more frequently had ulcerated primary tumors (P<.001), more frequently had positive nodes (P =.004), and were at a more advanced stage (P =.002) than their white counterparts. The anatomic distribution between the 2 populations was significantly different (P<.001), with a high incidence of melanoma on the sole and subungual locations and a substantially less frequent occurrence on the head and neck, trunk, and extremities in the nonwhite population when compared with the white population. The overall survival rate of the nonwhite patients was significantly worse than that of the white patients, but when stratified by stage at initial diagnosis, there was no difference in outcome.\n\nBiomedical Question:\nCutaneous melanoma in a multiethnic population: is this a different disease?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"In a multiethnic population, cutaneous melanoma in nonwhite persons is unusual but not rare. Although the diagnoses are distinctly different at initial examinations, suggesting a potential biological component, stage-for-stage outcomes are similar between white and nonwhite persons and suggest a need for early diagnostic interventions with unusual pigmented lesions in nonwhite persons.\",\n  \"evidence\": [\n    \"There were 208 men and 149 women who ranged in age from 15 to 93 years (mean, 58 years). Twenty-two patients initially had unknown primary sites. Of these 357 patients, 67 (18.7%) were nonwhite. There was no statistically significant difference in the age (P =.10) or sex (P =.57) distribution of these 2 populations. Nonwhite patients at initial diagnosis had thicker tumors (P =.002), more frequently had ulcerated primary tumors (P<.001), more frequently had positive nodes (P =.004), and were at a more advanced stage (P =.002) than their white counterparts. The anatomic distribution between the 2 populations was significantly different (P<.001), with a high incidence of melanoma on the sole and subungual locations and a substantially less frequent occurrence on the head and neck, trunk, and extremities in the nonwhite population when compared with the white population. The overall survival rate of the nonwhite patients was significantly worse than that of the white patients, but when stratified by stage at initial diagnosis, there was no difference in outcome.\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_25987398", "pmid": "25987398", "task": "evidence_qa", "question": "The influence of atmospheric pressure on aortic aneurysm rupture--is the diameter of the aneurysm important?", "context": "BACKGROUND: The rate of aortic aneurysm rupture correlates with the aneurysm's diameter, and a higher rate of rupture is observed in patients with larger aneurysms. According to the literature, contradictory results concerning the relationship between atmospheric pressure and aneurysm size have been reported.AIM: In this paper, we assessed the influence of changes in atmospheric pressure on abdominal aneurysm ruptures in relationship to the aneurysm's size.\n\nMETHODS: The records of 223 patients with ruptured abdominal aneurysms were evaluated. All of the patients had been admitted to the department in the period 1997-2007 from the Silesia region. The atmospheric pressures on the day of the rupture and on the days both before the rupture and between the rupture events were compared. The size of the aneurysm was also considered in the analysis.\n\nRESULTS: There were no statistically significant differences in pressure between the days of rupture and the remainder of the days within an analysed period. The highest frequency of the admission of patients with a ruptured aortic aneurysm was observed during periods of winter and spring, when the highest mean values of atmospheric pressure were observed; however, this observation was not statistically confirmed. A statistically non-significant trend towards the higher rupture of large aneurysms (>7 cm) was observed in the cases where the pressure increased between the day before the rupture and the day of the rupture. This trend was particularly pronounced in patients suffering from hypertension (p = 0.1).", "ground_truth": {"decision": "maybe", "answer": "The results of this study do not support the hypothesis that there is a direct link between atmospheric pressure values and abdominal aortic aneurysm ruptures.", "evidence": ["There were no statistically significant differences in pressure between the days of rupture and the remainder of the days within an analysed period. The highest frequency of the admission of patients with a ruptured aortic aneurysm was observed during periods of winter and spring, when the highest mean values of atmospheric pressure were observed; however, this observation was not statistically confirmed. A statistically non-significant trend towards the higher rupture of large aneurysms (>7 cm) was observed in the cases where the pressure increased between the day before the rupture and the day of the rupture. This trend was particularly pronounced in patients suffering from hypertension (p = 0.1)."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: The rate of aortic aneurysm rupture correlates with the aneurysm's diameter, and a higher rate of rupture is observed in patients with larger aneurysms. According to the literature, contradictory results concerning the relationship between atmospheric pressure and aneurysm size have been reported.AIM: In this paper, we assessed the influence of changes in atmospheric pressure on abdominal aneurysm ruptures in relationship to the aneurysm's size.\n\nMETHODS: The records of 223 patients with ruptured abdominal aneurysms were evaluated. All of the patients had been admitted to the department in the period 1997-2007 from the Silesia region. The atmospheric pressures on the day of the rupture and on the days both before the rupture and between the rupture events were compared. The size of the aneurysm was also considered in the analysis.\n\nRESULTS: There were no statistically significant differences in pressure between the days of rupture and the remainder of the days within an analysed period. The highest frequency of the admission of patients with a ruptured aortic aneurysm was observed during periods of winter and spring, when the highest mean values of atmospheric pressure were observed; however, this observation was not statistically confirmed. A statistically non-significant trend towards the higher rupture of large aneurysms (>7 cm) was observed in the cases where the pressure increased between the day before the rupture and the day of the rupture. This trend was particularly pronounced in patients suffering from hypertension (p = 0.1).\n\nBiomedical Question:\nThe influence of atmospheric pressure on aortic aneurysm rupture--is the diameter of the aneurysm important?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"The results of this study do not support the hypothesis that there is a direct link between atmospheric pressure values and abdominal aortic aneurysm ruptures.\",\n  \"evidence\": [\n    \"There were no statistically significant differences in pressure between the days of rupture and the remainder of the days within an analysed period. The highest frequency of the admission of patients with a ruptured aortic aneurysm was observed during periods of winter and spring, when the highest mean values of atmospheric pressure were observed; however, this observation was not statistically confirmed. A statistically non-significant trend towards the higher rupture of large aneurysms (>7 cm) was observed in the cases where the pressure increased between the day before the rupture and the day of the rupture. This trend was particularly pronounced in patients suffering from hypertension (p = 0.1).\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_10966943", "pmid": "10966943", "task": "evidence_qa", "question": "Amblyopia: is visual loss permanent?", "context": "METHODS: The records of 465 patients with an established diagnosis of age related macular degeneration who had attended a specialist macular clinic between 1990 and 1998 were scrutinised. A full clinical examination and standardised refraction had been carried out in 189 of these cases on a minimum of two occasions. Cases were looked for where an improvement of one or more lines of either distance or near acuity was recorded in the eye unaffected by macular disease. In each one of these cases the improvement in visual acuity could not be attributed to treatment of other existing pathology.\n\nRESULTS: 12 such cases were detected. In nine of these the eye showing improvement of acuity had a history of amblyopia. The mean improvement in distance and near acuity in amblyopic eyes by 12 months was 3.3 and 1.9 lines logMAR respectively. The improvement in acuity generally occurred between 1 and 12 months from baseline and remained stable over the period of follow up.", "ground_truth": {"decision": "no", "answer": "Older people with a history of amblyopia who develop visual loss in the previously normal eye can experience recovery of visual function in the amblyopic eye over a period of time. This recovery in visual function occurs in the wake of visual loss in the fellow eye and the improvement appears to be sustained.", "evidence": ["12 such cases were detected. In nine of these the eye showing improvement of acuity had a history of amblyopia. The mean improvement in distance and near acuity in amblyopic eyes by 12 months was 3.3 and 1.9 lines logMAR respectively. The improvement in acuity generally occurred between 1 and 12 months from baseline and remained stable over the period of follow up."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nMETHODS: The records of 465 patients with an established diagnosis of age related macular degeneration who had attended a specialist macular clinic between 1990 and 1998 were scrutinised. A full clinical examination and standardised refraction had been carried out in 189 of these cases on a minimum of two occasions. Cases were looked for where an improvement of one or more lines of either distance or near acuity was recorded in the eye unaffected by macular disease. In each one of these cases the improvement in visual acuity could not be attributed to treatment of other existing pathology.\n\nRESULTS: 12 such cases were detected. In nine of these the eye showing improvement of acuity had a history of amblyopia. The mean improvement in distance and near acuity in amblyopic eyes by 12 months was 3.3 and 1.9 lines logMAR respectively. The improvement in acuity generally occurred between 1 and 12 months from baseline and remained stable over the period of follow up.\n\nBiomedical Question:\nAmblyopia: is visual loss permanent?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"Older people with a history of amblyopia who develop visual loss in the previously normal eye can experience recovery of visual function in the amblyopic eye over a period of time. This recovery in visual function occurs in the wake of visual loss in the fellow eye and the improvement appears to be sustained.\",\n  \"evidence\": [\n    \"12 such cases were detected. In nine of these the eye showing improvement of acuity had a history of amblyopia. The mean improvement in distance and near acuity in amblyopic eyes by 12 months was 3.3 and 1.9 lines logMAR respectively. The improvement in acuity generally occurred between 1 and 12 months from baseline and remained stable over the period of follow up.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_21481154", "pmid": "21481154", "task": "evidence_qa", "question": "Improvements in survival of gynaecological cancer in the Anglia region of England: are these an effect of centralisation of care and use of multidisciplinary management?", "context": "OBJECTIVE: Our hypothesis is that the adoption of Department of Health (DH) guidance has led to an improvement in outcome in gynaecological cancer survival.\n\nSETTING: In 1999 the DH in England introduced the Improving Outcomes in Gynaecological Cancer guidance, advising case management by multidisciplinary teams with surgical concentration in specialist hospitals. This guidance was rapidly adopted in the East of England, with a population of 2.5 million.\n\nPOPULATION: The population of the Anglia Cancer Network was approximately 2.3 million.\n\nMETHODS: From 1996 to 2003, details of 3406 cases of gynaecological cancer were identified in the Anglia region of England. Survival analysis was performed by Cox proportional hazards regression, relative to cases diagnosed in 1996.\n\nMAIN OUTCOME MEASURE: Primary endpoint was survival.\n\nRESULTS: The survival rates for cases diagnosed between 1996 and 1999 were broadly the same across the time period, with a marked improvement taking place in 2000, and continuing to 2003 (HR 0.71, 95% CI 0.64-0.79, comparing 2000-03 with 1996-99 diagnoses), for all gynaecological sites combined. Adjustment for treatments or method of case follow-up did not attenuate these improvements. There was a concurrent change towards major surgery being performed in specialist centres from 2000.", "ground_truth": {"decision": "yes", "answer": "The adoption of the 1999 guidance on gynaecological cancer, which included multidisciplinary case management and centralisation of surgery, resulted in a marked step-change improvement in survival of gynaecological cancer in an area of eastern England in 2000.", "evidence": ["The survival rates for cases diagnosed between 1996 and 1999 were broadly the same across the time period, with a marked improvement taking place in 2000, and continuing to 2003 (HR 0.71, 95% CI 0.64-0.79, comparing 2000-03 with 1996-99 diagnoses), for all gynaecological sites combined. Adjustment for treatments or method of case follow-up did not attenuate these improvements. There was a concurrent change towards major surgery being performed in specialist centres from 2000."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: Our hypothesis is that the adoption of Department of Health (DH) guidance has led to an improvement in outcome in gynaecological cancer survival.\n\nSETTING: In 1999 the DH in England introduced the Improving Outcomes in Gynaecological Cancer guidance, advising case management by multidisciplinary teams with surgical concentration in specialist hospitals. This guidance was rapidly adopted in the East of England, with a population of 2.5 million.\n\nPOPULATION: The population of the Anglia Cancer Network was approximately 2.3 million.\n\nMETHODS: From 1996 to 2003, details of 3406 cases of gynaecological cancer were identified in the Anglia region of England. Survival analysis was performed by Cox proportional hazards regression, relative to cases diagnosed in 1996.\n\nMAIN OUTCOME MEASURE: Primary endpoint was survival.\n\nRESULTS: The survival rates for cases diagnosed between 1996 and 1999 were broadly the same across the time period, with a marked improvement taking place in 2000, and continuing to 2003 (HR 0.71, 95% CI 0.64-0.79, comparing 2000-03 with 1996-99 diagnoses), for all gynaecological sites combined. Adjustment for treatments or method of case follow-up did not attenuate these improvements. There was a concurrent change towards major surgery being performed in specialist centres from 2000.\n\nBiomedical Question:\nImprovements in survival of gynaecological cancer in the Anglia region of England: are these an effect of centralisation of care and use of multidisciplinary management?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"The adoption of the 1999 guidance on gynaecological cancer, which included multidisciplinary case management and centralisation of surgery, resulted in a marked step-change improvement in survival of gynaecological cancer in an area of eastern England in 2000.\",\n  \"evidence\": [\n    \"The survival rates for cases diagnosed between 1996 and 1999 were broadly the same across the time period, with a marked improvement taking place in 2000, and continuing to 2003 (HR 0.71, 95% CI 0.64-0.79, comparing 2000-03 with 1996-99 diagnoses), for all gynaecological sites combined. Adjustment for treatments or method of case follow-up did not attenuate these improvements. There was a concurrent change towards major surgery being performed in specialist centres from 2000.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_11838307", "pmid": "11838307", "task": "evidence_qa", "question": "Cold knife conization vs. LEEP. Are they the same procedure?", "context": "OBJECTIVE: To prospectively evaluate the amount of tissue removed at loop electrosurgical excision procedure (LEEP) vs. cold knife conization.\n\nSTUDY DESIGN: Forty consecutive LEEP or cold knife conization specimens were prospectively measured and weighed by a single pathology technician. Diameter, length and weight of the specimens were compared using Student's t test.\n\nRESULTS: Mean diameter of cold knife cone specimens was 2.6 vs. 2.2 cm for LEEP (P = .07). Mean length of cold knife cone specimens was 1.5 vs. 1.0 cm for LEEP (P = .001). Mean weight for cold knife cone specimens was 4.4 vs. 2.0 g for LEEP (P = .001).", "ground_truth": {"decision": "no", "answer": "In a prospective evaluation, cold knife cone specimens were 50% longer and 100% heavier than LEEP specimens.", "evidence": ["Mean diameter of cold knife cone specimens was 2.6 vs. 2.2 cm for LEEP (P = .07). Mean length of cold knife cone specimens was 1.5 vs. 1.0 cm for LEEP (P = .001). Mean weight for cold knife cone specimens was 4.4 vs. 2.0 g for LEEP (P = .001)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: To prospectively evaluate the amount of tissue removed at loop electrosurgical excision procedure (LEEP) vs. cold knife conization.\n\nSTUDY DESIGN: Forty consecutive LEEP or cold knife conization specimens were prospectively measured and weighed by a single pathology technician. Diameter, length and weight of the specimens were compared using Student's t test.\n\nRESULTS: Mean diameter of cold knife cone specimens was 2.6 vs. 2.2 cm for LEEP (P = .07). Mean length of cold knife cone specimens was 1.5 vs. 1.0 cm for LEEP (P = .001). Mean weight for cold knife cone specimens was 4.4 vs. 2.0 g for LEEP (P = .001).\n\nBiomedical Question:\nCold knife conization vs. LEEP. Are they the same procedure?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"In a prospective evaluation, cold knife cone specimens were 50% longer and 100% heavier than LEEP specimens.\",\n  \"evidence\": [\n    \"Mean diameter of cold knife cone specimens was 2.6 vs. 2.2 cm for LEEP (P = .07). Mean length of cold knife cone specimens was 1.5 vs. 1.0 cm for LEEP (P = .001). Mean weight for cold knife cone specimens was 4.4 vs. 2.0 g for LEEP (P = .001).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_23774337", "pmid": "23774337", "task": "evidence_qa", "question": "Does the central venous pressure predict fluid responsiveness?", "context": "BACKGROUND: Despite a previous meta-analysis that concluded that central venous pressure should not be used to make clinical decisions regarding fluid management, central venous pressure continues to be recommended for this purpose.AIM: To perform an updated meta-analysis incorporating recent studies that investigated indices predictive of fluid responsiveness. A priori subgroup analysis was planned according to the location where the study was performed (ICU or operating room).\n\nDATA SOURCES: MEDLINE, EMBASE, Cochrane Register of Controlled Trials, and citation review of relevant primary and review articles.\n\nSTUDY SELECTION: Clinical trials that reported the correlation coefficient or area under the receiver operating characteristic curve (AUC) between the central venous pressure and change in cardiac performance following an intervention that altered cardiac preload. From 191 articles screened, 43 studies met our inclusion criteria and were included for data extraction. The studies included human adult subjects, and included healthy controls (n = 1) and ICU (n = 22) and operating room (n = 20) patients.\n\nDATA EXTRACTION: Data were abstracted on study characteristics, patient population, baseline central venous pressure, the correlation coefficient, and/or the AUC between central venous pressure and change in stroke volume index/cardiac index and the percentage of fluid responders. Meta-analytic techniques were used to summarize the data.\n\nDATA SYNTHESIS: Overall 57% ± 13% of patients were fluid responders. The summary AUC was 0.56 (95% CI, 0.54-0.58) with no heterogenicity between studies. The summary AUC was 0.56 (95% CI, 0.52-0.60) for those studies done in the ICU and 0.56 (95% CI, 0.54-0.58) for those done in the operating room. The summary correlation coefficient between the baseline central venous pressure and change in stroke volume index/cardiac index was 0.18 (95% CI, 0.1-0.25), being 0.28 (95% CI, 0.16-0.40) in the ICU patients, and 0.11 (95% CI, 0.02-0.21) in the operating room patients.", "ground_truth": {"decision": "no", "answer": "There are no data to support the widespread practice of using central venous pressure to guide fluid therapy. This approach to fluid resuscitation should be abandoned.", "evidence": ["Overall 57% ± 13% of patients were fluid responders. The summary AUC was 0.56 (95% CI, 0.54-0.58) with no heterogenicity between studies. The summary AUC was 0.56 (95% CI, 0.52-0.60) for those studies done in the ICU and 0.56 (95% CI, 0.54-0.58) for those done in the operating room. The summary correlation coefficient between the baseline central venous pressure and change in stroke volume index/cardiac index was 0.18 (95% CI, 0.1-0.25), being 0.28 (95% CI, 0.16-0.40) in the ICU patients, and 0.11 (95% CI, 0.02-0.21) in the operating room patients."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Despite a previous meta-analysis that concluded that central venous pressure should not be used to make clinical decisions regarding fluid management, central venous pressure continues to be recommended for this purpose.AIM: To perform an updated meta-analysis incorporating recent studies that investigated indices predictive of fluid responsiveness. A priori subgroup analysis was planned according to the location where the study was performed (ICU or operating room).\n\nDATA SOURCES: MEDLINE, EMBASE, Cochrane Register of Controlled Trials, and citation review of relevant primary and review articles.\n\nSTUDY SELECTION: Clinical trials that reported the correlation coefficient or area under the receiver operating characteristic curve (AUC) between the central venous pressure and change in cardiac performance following an intervention that altered cardiac preload. From 191 articles screened, 43 studies met our inclusion criteria and were included for data extraction. The studies included human adult subjects, and included healthy controls (n = 1) and ICU (n = 22) and operating room (n = 20) patients.\n\nDATA EXTRACTION: Data were abstracted on study characteristics, patient population, baseline central venous pressure, the correlation coefficient, and/or the AUC between central venous pressure and change in stroke volume index/cardiac index and the percentage of fluid responders. Meta-analytic techniques were used to summarize the data.\n\nDATA SYNTHESIS: Overall 57% ± 13% of patients were fluid responders. The summary AUC was 0.56 (95% CI, 0.54-0.58) with no heterogenicity between studies. The summary AUC was 0.56 (95% CI, 0.52-0.60) for those studies done in the ICU and 0.56 (95% CI, 0.54-0.58) for those done in the operating room. The summary correlation coefficient between the baseline central venous pressure and change in stroke volume index/cardiac index was 0.18 (95% CI, 0.1-0.25), being 0.28 (95% CI, 0.16-0.40) in the ICU patients, and 0.11 (95% CI, 0.02-0.21) in the operating room patients.\n\nBiomedical Question:\nDoes the central venous pressure predict fluid responsiveness?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"There are no data to support the widespread practice of using central venous pressure to guide fluid therapy. This approach to fluid resuscitation should be abandoned.\",\n  \"evidence\": [\n    \"Overall 57% ± 13% of patients were fluid responders. The summary AUC was 0.56 (95% CI, 0.54-0.58) with no heterogenicity between studies. The summary AUC was 0.56 (95% CI, 0.52-0.60) for those studies done in the ICU and 0.56 (95% CI, 0.54-0.58) for those done in the operating room. The summary correlation coefficient between the baseline central venous pressure and change in stroke volume index/cardiac index was 0.18 (95% CI, 0.1-0.25), being 0.28 (95% CI, 0.16-0.40) in the ICU patients, and 0.11 (95% CI, 0.02-0.21) in the operating room patients.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_23321509", "pmid": "23321509", "task": "evidence_qa", "question": "Quaternary cytoreductive surgery in ovarian cancer: does surgical effort still matter?", "context": "BACKGROUND: To evaluate surgical outcome and survival benefit after quaternary cytoreduction (QC) in epithelial ovarian cancer (EOC) relapse.\n\nMETHODS: We systematically evaluated all consecutive patients undergoing QC in our institution over a 12-year period (October 2000-January 2012). All relevant surgical and clinical outcome parameters were systematically assessed.\n\nRESULTS: Forty-nine EOC patients (median age: 57; range: 28-76) underwent QC; in a median of 16 months (range:2-142) after previous chemotherapy. The majority of the patients had an initial FIGO stage III (67.3%), peritoneal carcinomatosis (77.6%) and no ascites (67.3%). At QC, patients presented following tumour pattern: lower abdomen 85.7%; middle abdomen 79.6% and upper abdomen 42.9%. Median duration of surgery was 292 min (range: a total macroscopic tumour clearance could be achieved. Rates of major operative morbidity and 30-day mortality were 28.6% and 2%, respectively.Mean follow-up from QC was 18.41 months (95% confidence interval (CI):12.64-24.18) and mean overall survival (OS) 23.05 months (95% CI: 15.5-30.6). Mean OS for patients without vs any tumour residuals was 43 months (95% CI: 26.4-59.5) vs 13.4 months (95% CI: 7.42-19.4); P=0.001. Mean OS for patients who received postoperative chemotherapy (n=18; 36.7%) vs those who did not was 40.5 months (95% CI: 27.4-53.6) vs 12.03 months (95% CI: 5.9-18.18); P<0.001.Multivariate analysis indentified multifocal tumour dissemination to be of predictive significance for incomplete tumour resection, higher operative morbidity and lower survival, while systemic chemotherapy subsequent to QC had a protective significant impact on OS. No prognostic impact had ascites, platinum resistance, high grading and advanced age.", "ground_truth": {"decision": "yes", "answer": "Even in this highly advanced setting of the third EOC relapse, maximal therapeutic effort combining optimal surgery and chemotherapy appear to significantly prolong survival in a selected patients 'group'.", "evidence": ["Forty-nine EOC patients (median age: 57; range: 28-76) underwent QC; in a median of 16 months (range:2-142) after previous chemotherapy. The majority of the patients had an initial FIGO stage III (67.3%), peritoneal carcinomatosis (77.6%) and no ascites (67.3%). At QC, patients presented following tumour pattern: lower abdomen 85.7%; middle abdomen 79.6% and upper abdomen 42.9%. Median duration of surgery was 292 min (range: a total macroscopic tumour clearance could be achieved. Rates of major operative morbidity and 30-day mortality were 28.6% and 2%, respectively.Mean follow-up from QC was 18.41 months (95% confidence interval (CI):12.64-24.18) and mean overall survival (OS) 23.05 months (95% CI: 15.5-30.6). Mean OS for patients without vs any tumour residuals was 43 months (95% CI: 26.4-59.5) vs 13.4 months (95% CI: 7.42-19.4); P=0.001. Mean OS for patients who received postoperative chemotherapy (n=18; 36.7%) vs those who did not was 40.5 months (95% CI: 27.4-53.6) vs 12.03 months (95% CI: 5.9-18.18); P<0.001.Multivariate analysis indentified multifocal tumour dissemination to be of predictive significance for incomplete tumour resection, higher operative morbidity and lower survival, while systemic chemotherapy subsequent to QC had a protective significant impact on OS. No prognostic impact had ascites, platinum resistance, high grading and advanced age."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: To evaluate surgical outcome and survival benefit after quaternary cytoreduction (QC) in epithelial ovarian cancer (EOC) relapse.\n\nMETHODS: We systematically evaluated all consecutive patients undergoing QC in our institution over a 12-year period (October 2000-January 2012). All relevant surgical and clinical outcome parameters were systematically assessed.\n\nRESULTS: Forty-nine EOC patients (median age: 57; range: 28-76) underwent QC; in a median of 16 months (range:2-142) after previous chemotherapy. The majority of the patients had an initial FIGO stage III (67.3%), peritoneal carcinomatosis (77.6%) and no ascites (67.3%). At QC, patients presented following tumour pattern: lower abdomen 85.7%; middle abdomen 79.6% and upper abdomen 42.9%. Median duration of surgery was 292 min (range: a total macroscopic tumour clearance could be achieved. Rates of major operative morbidity and 30-day mortality were 28.6% and 2%, respectively.Mean follow-up from QC was 18.41 months (95% confidence interval (CI):12.64-24.18) and mean overall survival (OS) 23.05 months (95% CI: 15.5-30.6). Mean OS for patients without vs any tumour residuals was 43 months (95% CI: 26.4-59.5) vs 13.4 months (95% CI: 7.42-19.4); P=0.001. Mean OS for patients who received postoperative chemotherapy (n=18; 36.7%) vs those who did not was 40.5 months (95% CI: 27.4-53.6) vs 12.03 months (95% CI: 5.9-18.18); P<0.001.Multivariate analysis indentified multifocal tumour dissemination to be of predictive significance for incomplete tumour resection, higher operative morbidity and lower survival, while systemic chemotherapy subsequent to QC had a protective significant impact on OS. No prognostic impact had ascites, platinum resistance, high grading and advanced age.\n\nBiomedical Question:\nQuaternary cytoreductive surgery in ovarian cancer: does surgical effort still matter?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Even in this highly advanced setting of the third EOC relapse, maximal therapeutic effort combining optimal surgery and chemotherapy appear to significantly prolong survival in a selected patients 'group'.\",\n  \"evidence\": [\n    \"Forty-nine EOC patients (median age: 57; range: 28-76) underwent QC; in a median of 16 months (range:2-142) after previous chemotherapy. The majority of the patients had an initial FIGO stage III (67.3%), peritoneal carcinomatosis (77.6%) and no ascites (67.3%). At QC, patients presented following tumour pattern: lower abdomen 85.7%; middle abdomen 79.6% and upper abdomen 42.9%. Median duration of surgery was 292 min (range: a total macroscopic tumour clearance could be achieved. Rates of major operative morbidity and 30-day mortality were 28.6% and 2%, respectively.Mean follow-up from QC was 18.41 months (95% confidence interval (CI):12.64-24.18) and mean overall survival (OS) 23.05 months (95% CI: 15.5-30.6). Mean OS for patients without vs any tumour residuals was 43 months (95% CI: 26.4-59.5) vs 13.4 months (95% CI: 7.42-19.4); P=0.001. Mean OS for patients who received postoperative chemotherapy (n=18; 36.7%) vs those who did not was 40.5 months (95% CI: 27.4-53.6) vs 12.03 months (95% CI: 5.9-18.18); P<0.001.Multivariate analysis indentified multifocal tumour dissemination to be of predictive significance for incomplete tumour resection, higher operative morbidity and lower survival, while systemic chemotherapy subsequent to QC had a protective significant impact on OS. No prognostic impact had ascites, platinum resistance, high grading and advanced age.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_21569408", "pmid": "21569408", "task": "evidence_qa", "question": "Does context matter for the relationship between deprivation and all-cause mortality?", "context": "BACKGROUND: A growing body of research emphasizes the importance of contextual factors on health outcomes. Using postcode sector data for Scotland (UK), this study tests the hypothesis of spatial heterogeneity in the relationship between area-level deprivation and mortality to determine if contextual differences in the West vs. the rest of Scotland influence this relationship. Research into health inequalities frequently fails to recognise spatial heterogeneity in the deprivation-health relationship, assuming that global relationships apply uniformly across geographical areas. In this study, exploratory spatial data analysis methods are used to assess local patterns in deprivation and mortality. Spatial regression models are then implemented to examine the relationship between deprivation and mortality more formally.\n\nRESULTS: The initial exploratory spatial data analysis reveals concentrations of high standardized mortality ratios (SMR) and deprivation (hotspots) in the West of Scotland and concentrations of low values (coldspots) for both variables in the rest of the country. The main spatial regression result is that deprivation is the only variable that is highly significantly correlated with all-cause mortality in all models. However, in contrast to the expected spatial heterogeneity in the deprivation-mortality relationship, this relation does not vary between regions in any of the models. This result is robust to a number of specifications, including weighting for population size, controlling for spatial autocorrelation and heteroskedasticity, assuming a non-linear relationship between mortality and socio-economic deprivation, separating the dependent variable into male and female SMRs, and distinguishing between West, North and Southeast regions. The rejection of the hypothesis of spatial heterogeneity in the relationship between socio-economic deprivation and mortality complements prior research on the stability of the deprivation-mortality relationship over time.", "ground_truth": {"decision": "no", "answer": "The homogeneity we found in the deprivation-mortality relationship across the regions of Scotland and the absence of a contextualized effect of region highlights the importance of taking a broader strategic policy that can combat the toxic impacts of socio-economic deprivation on health. Focusing on a few specific places (e.g. 15% of the poorest areas) to concentrate resources might be a good start but the impact of socio-economic deprivation on mortality is not restricted to a few places. A comprehensive strategy that can be sustained over time might be needed to interrupt the linkages between poverty and mortality.", "evidence": ["The initial exploratory spatial data analysis reveals concentrations of high standardized mortality ratios (SMR) and deprivation (hotspots) in the West of Scotland and concentrations of low values (coldspots) for both variables in the rest of the country. The main spatial regression result is that deprivation is the only variable that is highly significantly correlated with all-cause mortality in all models. However, in contrast to the expected spatial heterogeneity in the deprivation-mortality relationship, this relation does not vary between regions in any of the models. This result is robust to a number of specifications, including weighting for population size, controlling for spatial autocorrelation and heteroskedasticity, assuming a non-linear relationship between mortality and socio-economic deprivation, separating the dependent variable into male and female SMRs, and distinguishing between West, North and Southeast regions. The rejection of the hypothesis of spatial heterogeneity in the relationship between socio-economic deprivation and mortality complements prior research on the stability of the deprivation-mortality relationship over time."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: A growing body of research emphasizes the importance of contextual factors on health outcomes. Using postcode sector data for Scotland (UK), this study tests the hypothesis of spatial heterogeneity in the relationship between area-level deprivation and mortality to determine if contextual differences in the West vs. the rest of Scotland influence this relationship. Research into health inequalities frequently fails to recognise spatial heterogeneity in the deprivation-health relationship, assuming that global relationships apply uniformly across geographical areas. In this study, exploratory spatial data analysis methods are used to assess local patterns in deprivation and mortality. Spatial regression models are then implemented to examine the relationship between deprivation and mortality more formally.\n\nRESULTS: The initial exploratory spatial data analysis reveals concentrations of high standardized mortality ratios (SMR) and deprivation (hotspots) in the West of Scotland and concentrations of low values (coldspots) for both variables in the rest of the country. The main spatial regression result is that deprivation is the only variable that is highly significantly correlated with all-cause mortality in all models. However, in contrast to the expected spatial heterogeneity in the deprivation-mortality relationship, this relation does not vary between regions in any of the models. This result is robust to a number of specifications, including weighting for population size, controlling for spatial autocorrelation and heteroskedasticity, assuming a non-linear relationship between mortality and socio-economic deprivation, separating the dependent variable into male and female SMRs, and distinguishing between West, North and Southeast regions. The rejection of the hypothesis of spatial heterogeneity in the relationship between socio-economic deprivation and mortality complements prior research on the stability of the deprivation-mortality relationship over time.\n\nBiomedical Question:\nDoes context matter for the relationship between deprivation and all-cause mortality?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"The homogeneity we found in the deprivation-mortality relationship across the regions of Scotland and the absence of a contextualized effect of region highlights the importance of taking a broader strategic policy that can combat the toxic impacts of socio-economic deprivation on health. Focusing on a few specific places (e.g. 15% of the poorest areas) to concentrate resources might be a good start but the impact of socio-economic deprivation on mortality is not restricted to a few places. A comprehensive strategy that can be sustained over time might be needed to interrupt the linkages between poverty and mortality.\",\n  \"evidence\": [\n    \"The initial exploratory spatial data analysis reveals concentrations of high standardized mortality ratios (SMR) and deprivation (hotspots) in the West of Scotland and concentrations of low values (coldspots) for both variables in the rest of the country. The main spatial regression result is that deprivation is the only variable that is highly significantly correlated with all-cause mortality in all models. However, in contrast to the expected spatial heterogeneity in the deprivation-mortality relationship, this relation does not vary between regions in any of the models. This result is robust to a number of specifications, including weighting for population size, controlling for spatial autocorrelation and heteroskedasticity, assuming a non-linear relationship between mortality and socio-economic deprivation, separating the dependent variable into male and female SMRs, and distinguishing between West, North and Southeast regions. The rejection of the hypothesis of spatial heterogeneity in the relationship between socio-economic deprivation and mortality complements prior research on the stability of the deprivation-mortality relationship over time.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_25487603", "pmid": "25487603", "task": "evidence_qa", "question": "Analysis of the epidemiological pattern of Shigellosis in Barcelona between 1988 and 2012: Is it an emerging sexually transmitted infection?", "context": "INTRODUCTION: The aim of this study was to describe the evolution and epidemiologic characteristics of shigellosis patients over a 25 year period in a large city.\n\nMETHODS: Shigellosis is a notifiable disease in Spain since 1988. Cases are analyzed in Barcelona residents included in the registry between 1988-2012. A descriptive analysis by sex, age, mode of transmission and Shigella species is presented. Trend analysis and time series were performed.\n\nRESULTS: Of the 559 cases analyzed, 60.15% were males. A sustained increase was observed in the trend since 2008 in males (p<0,05), especially at the expense of males who had no history of food poisoning or travel to endemic areas. The increasing tendency was greater in males from 21 to 60 years, both for S. flexneri (since 2009), and for S. sonnei (since 2004). In 2012 it was noted that in the men with S. flexneri, the 63% were men who have sex with men.", "ground_truth": {"decision": "yes", "answer": "An increased trend was detected in men who had no history of food poisoning or travel to endemic areas. This increase points to a change in the pattern of shigellosis, becoming predominantly male and its main mechanism probably by sexual transmission.", "evidence": ["Of the 559 cases analyzed, 60.15% were males. A sustained increase was observed in the trend since 2008 in males (p<0,05), especially at the expense of males who had no history of food poisoning or travel to endemic areas. The increasing tendency was greater in males from 21 to 60 years, both for S. flexneri (since 2009), and for S. sonnei (since 2004). In 2012 it was noted that in the men with S. flexneri, the 63% were men who have sex with men."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nINTRODUCTION: The aim of this study was to describe the evolution and epidemiologic characteristics of shigellosis patients over a 25 year period in a large city.\n\nMETHODS: Shigellosis is a notifiable disease in Spain since 1988. Cases are analyzed in Barcelona residents included in the registry between 1988-2012. A descriptive analysis by sex, age, mode of transmission and Shigella species is presented. Trend analysis and time series were performed.\n\nRESULTS: Of the 559 cases analyzed, 60.15% were males. A sustained increase was observed in the trend since 2008 in males (p<0,05), especially at the expense of males who had no history of food poisoning or travel to endemic areas. The increasing tendency was greater in males from 21 to 60 years, both for S. flexneri (since 2009), and for S. sonnei (since 2004). In 2012 it was noted that in the men with S. flexneri, the 63% were men who have sex with men.\n\nBiomedical Question:\nAnalysis of the epidemiological pattern of Shigellosis in Barcelona between 1988 and 2012: Is it an emerging sexually transmitted infection?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"An increased trend was detected in men who had no history of food poisoning or travel to endemic areas. This increase points to a change in the pattern of shigellosis, becoming predominantly male and its main mechanism probably by sexual transmission.\",\n  \"evidence\": [\n    \"Of the 559 cases analyzed, 60.15% were males. A sustained increase was observed in the trend since 2008 in males (p<0,05), especially at the expense of males who had no history of food poisoning or travel to endemic areas. The increasing tendency was greater in males from 21 to 60 years, both for S. flexneri (since 2009), and for S. sonnei (since 2004). In 2012 it was noted that in the men with S. flexneri, the 63% were men who have sex with men.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_24946973", "pmid": "24946973", "task": "evidence_qa", "question": "Is oncoplastic surgery a contraindication for accelerated partial breast radiation using the interstitial multicatheter brachytherapy method?", "context": "PURPOSE: To evaluate accelerated partial breast irradiation (APBI) in patients after oncoplastic surgery for early breast cancer.\n\nMETHODS AND MATERIALS: A retrospective analysis of 136 breasts of 134 patients, who received breast-conserving oncoplastic surgery for low-risk breast cancer between 2002 and 2010 in the Universities of Vienna and Luebeck followed by adjuvant APBI applying total doses of pulse dose rate of 50.4 Gy or high-dose rate (HDR) of 32 Gy over 4 days. Target volume definition was performed by the use of surgical-free margin data, related to intraoperatively fixed clip positions, pre- and postoperative imaging, and palpation.\n\nRESULTS: At the time of data acquisition, 131 of 134 patients were alive. The median follow-up time was 39 months (range, 4-106 months). After high-dose rate treatment, 3 of 89 patients showed systemic progress after a mean follow-up of 47 months (range, 19-75 months) and 2 patients had a different quadrant in-breast tumor after 27 and 35 months. One patient died 7 months after treatment of unknown causes. After pulse dose rate treatment, 1 of 45 patients had a local recurrence after 42 months and 1 patient died because of another cause after 13 months. We observed mild fibrosis in 27 breasts, telangiectasia in 6, hyperpigmentation in 14 cases, and keloid formation in 1.", "ground_truth": {"decision": "maybe", "answer": "These preliminary results suggest the feasibility of multicatheter APBI after oncoplastic breast-conserving surgery in selected low-risk breast cancer patients; however, special attention to target volume definition is needed. Further prospective investigations with long follow-up are needed to define the real value of the procedure.", "evidence": ["At the time of data acquisition, 131 of 134 patients were alive. The median follow-up time was 39 months (range, 4-106 months). After high-dose rate treatment, 3 of 89 patients showed systemic progress after a mean follow-up of 47 months (range, 19-75 months) and 2 patients had a different quadrant in-breast tumor after 27 and 35 months. One patient died 7 months after treatment of unknown causes. After pulse dose rate treatment, 1 of 45 patients had a local recurrence after 42 months and 1 patient died because of another cause after 13 months. We observed mild fibrosis in 27 breasts, telangiectasia in 6, hyperpigmentation in 14 cases, and keloid formation in 1."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: To evaluate accelerated partial breast irradiation (APBI) in patients after oncoplastic surgery for early breast cancer.\n\nMETHODS AND MATERIALS: A retrospective analysis of 136 breasts of 134 patients, who received breast-conserving oncoplastic surgery for low-risk breast cancer between 2002 and 2010 in the Universities of Vienna and Luebeck followed by adjuvant APBI applying total doses of pulse dose rate of 50.4 Gy or high-dose rate (HDR) of 32 Gy over 4 days. Target volume definition was performed by the use of surgical-free margin data, related to intraoperatively fixed clip positions, pre- and postoperative imaging, and palpation.\n\nRESULTS: At the time of data acquisition, 131 of 134 patients were alive. The median follow-up time was 39 months (range, 4-106 months). After high-dose rate treatment, 3 of 89 patients showed systemic progress after a mean follow-up of 47 months (range, 19-75 months) and 2 patients had a different quadrant in-breast tumor after 27 and 35 months. One patient died 7 months after treatment of unknown causes. After pulse dose rate treatment, 1 of 45 patients had a local recurrence after 42 months and 1 patient died because of another cause after 13 months. We observed mild fibrosis in 27 breasts, telangiectasia in 6, hyperpigmentation in 14 cases, and keloid formation in 1.\n\nBiomedical Question:\nIs oncoplastic surgery a contraindication for accelerated partial breast radiation using the interstitial multicatheter brachytherapy method?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"These preliminary results suggest the feasibility of multicatheter APBI after oncoplastic breast-conserving surgery in selected low-risk breast cancer patients; however, special attention to target volume definition is needed. Further prospective investigations with long follow-up are needed to define the real value of the procedure.\",\n  \"evidence\": [\n    \"At the time of data acquisition, 131 of 134 patients were alive. The median follow-up time was 39 months (range, 4-106 months). After high-dose rate treatment, 3 of 89 patients showed systemic progress after a mean follow-up of 47 months (range, 19-75 months) and 2 patients had a different quadrant in-breast tumor after 27 and 35 months. One patient died 7 months after treatment of unknown causes. After pulse dose rate treatment, 1 of 45 patients had a local recurrence after 42 months and 1 patient died because of another cause after 13 months. We observed mild fibrosis in 27 breasts, telangiectasia in 6, hyperpigmentation in 14 cases, and keloid formation in 1.\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_23719685", "pmid": "23719685", "task": "evidence_qa", "question": "Does high-dose radiotherapy benefit palliative lung cancer patients?", "context": "BACKGROUND AND PURPOSE: The present analysis compares two palliative treatment concepts for lung cancer in terms of overall survival.\n\nPATIENTS AND METHODS: Survival data from 207 patients were used in a retrospective analysis. All patients received palliative treatment comprising either 25 Gy applied in 5 fractions or 50 Gy in 20 fractions. A subgroup analysis was performed to compare patients with a good-fair vs. poor overall condition.\n\nRESULTS: Median survival times were 21 weeks (range 6-26 weeks) for patients treated with 25 Gy in 5 fractions and 23 weeks (range 14.5-31.5 weeks) for patients treated with 50 Gy in 20 fractions (95 % confidence interval, CI; p = 0.334). For patients with a good-fair overall condition, median survival times were 30 weeks (21.8-39.2 weeks) for 25 Gy in 5 fractions and 28 weeks (14.2-41.8 weeks) for 50 Gy in 20 fractions (CI 95 %, p = 0.694). In patients with a poor overall condition, these values were 18 weeks (14.5-21.5 weeks) and 21 weeks (13.0-29.0 weeks), respectively (CI 95 %, p = 0.248).", "ground_truth": {"decision": "no", "answer": "The palliative treatment concept of 25 Gy applied in 5 fractions is sufficient for radiation of lung cancer, given that there was no obvious survival improvement in patients treated with the higher total dose regimen.", "evidence": ["Median survival times were 21 weeks (range 6-26 weeks) for patients treated with 25 Gy in 5 fractions and 23 weeks (range 14.5-31.5 weeks) for patients treated with 50 Gy in 20 fractions (95 % confidence interval, CI; p = 0.334). For patients with a good-fair overall condition, median survival times were 30 weeks (21.8-39.2 weeks) for 25 Gy in 5 fractions and 28 weeks (14.2-41.8 weeks) for 50 Gy in 20 fractions (CI 95 %, p = 0.694). In patients with a poor overall condition, these values were 18 weeks (14.5-21.5 weeks) and 21 weeks (13.0-29.0 weeks), respectively (CI 95 %, p = 0.248)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND AND PURPOSE: The present analysis compares two palliative treatment concepts for lung cancer in terms of overall survival.\n\nPATIENTS AND METHODS: Survival data from 207 patients were used in a retrospective analysis. All patients received palliative treatment comprising either 25 Gy applied in 5 fractions or 50 Gy in 20 fractions. A subgroup analysis was performed to compare patients with a good-fair vs. poor overall condition.\n\nRESULTS: Median survival times were 21 weeks (range 6-26 weeks) for patients treated with 25 Gy in 5 fractions and 23 weeks (range 14.5-31.5 weeks) for patients treated with 50 Gy in 20 fractions (95 % confidence interval, CI; p = 0.334). For patients with a good-fair overall condition, median survival times were 30 weeks (21.8-39.2 weeks) for 25 Gy in 5 fractions and 28 weeks (14.2-41.8 weeks) for 50 Gy in 20 fractions (CI 95 %, p = 0.694). In patients with a poor overall condition, these values were 18 weeks (14.5-21.5 weeks) and 21 weeks (13.0-29.0 weeks), respectively (CI 95 %, p = 0.248).\n\nBiomedical Question:\nDoes high-dose radiotherapy benefit palliative lung cancer patients?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"The palliative treatment concept of 25 Gy applied in 5 fractions is sufficient for radiation of lung cancer, given that there was no obvious survival improvement in patients treated with the higher total dose regimen.\",\n  \"evidence\": [\n    \"Median survival times were 21 weeks (range 6-26 weeks) for patients treated with 25 Gy in 5 fractions and 23 weeks (range 14.5-31.5 weeks) for patients treated with 50 Gy in 20 fractions (95 % confidence interval, CI; p = 0.334). For patients with a good-fair overall condition, median survival times were 30 weeks (21.8-39.2 weeks) for 25 Gy in 5 fractions and 28 weeks (14.2-41.8 weeks) for 50 Gy in 20 fractions (CI 95 %, p = 0.694). In patients with a poor overall condition, these values were 18 weeks (14.5-21.5 weeks) and 21 weeks (13.0-29.0 weeks), respectively (CI 95 %, p = 0.248).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_17682349", "pmid": "17682349", "task": "evidence_qa", "question": "Are there gender differences in the reasons why African Americans delay in seeking medical help for symptoms of an acute myocardial infarction?", "context": "OBJECTIVES: To identify gender differences in delay time and the reasons why African Americans delay in seeking medical care for symptoms of acute myocardial infarction (AMI).\n\nDESIGN: Cross-sectional.\n\nSETTING: Five hospitals in the San Francisco and East Bay areas.\n\nPATIENTS: Sixty-one African American men and women diagnosed with an AMI.\n\nMAIN OUTCOME MEASURES: Prehospital delay time.\n\nRESULTS: Median delay time was longer for women compared to men (4.4 hours vs 3.5 hours), although the difference was not significant. Single women delayed longer than single men (P = .03), and women who were alone when symptoms began delayed longer than women with someone (P = .03). Women who received advice to seek help or call 911 upon symptom onset had shorter delays compared to women who were not advised to call 911 (P = .01). Men at home delayed longer than men who experienced their symptoms outside the home (P = .01). Men with emergency room insurance delayed longer than men without emergency room insurance (P = .03), and men who took an ambulance to the hospital had shorter delay times than men who took other means of transportation (P = .04).", "ground_truth": {"decision": "yes", "answer": "Women compared to men often delay seeking treatment for an AMI, which further increases their risks. Our findings suggest specific characteristics that can serve as a profile to those African Americans most likely to delay seeking treatment for AMI.", "evidence": ["Median delay time was longer for women compared to men (4.4 hours vs 3.5 hours), although the difference was not significant. Single women delayed longer than single men (P = .03), and women who were alone when symptoms began delayed longer than women with someone (P = .03). Women who received advice to seek help or call 911 upon symptom onset had shorter delays compared to women who were not advised to call 911 (P = .01). Men at home delayed longer than men who experienced their symptoms outside the home (P = .01). Men with emergency room insurance delayed longer than men without emergency room insurance (P = .03), and men who took an ambulance to the hospital had shorter delay times than men who took other means of transportation (P = .04)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVES: To identify gender differences in delay time and the reasons why African Americans delay in seeking medical care for symptoms of acute myocardial infarction (AMI).\n\nDESIGN: Cross-sectional.\n\nSETTING: Five hospitals in the San Francisco and East Bay areas.\n\nPATIENTS: Sixty-one African American men and women diagnosed with an AMI.\n\nMAIN OUTCOME MEASURES: Prehospital delay time.\n\nRESULTS: Median delay time was longer for women compared to men (4.4 hours vs 3.5 hours), although the difference was not significant. Single women delayed longer than single men (P = .03), and women who were alone when symptoms began delayed longer than women with someone (P = .03). Women who received advice to seek help or call 911 upon symptom onset had shorter delays compared to women who were not advised to call 911 (P = .01). Men at home delayed longer than men who experienced their symptoms outside the home (P = .01). Men with emergency room insurance delayed longer than men without emergency room insurance (P = .03), and men who took an ambulance to the hospital had shorter delay times than men who took other means of transportation (P = .04).\n\nBiomedical Question:\nAre there gender differences in the reasons why African Americans delay in seeking medical help for symptoms of an acute myocardial infarction?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Women compared to men often delay seeking treatment for an AMI, which further increases their risks. Our findings suggest specific characteristics that can serve as a profile to those African Americans most likely to delay seeking treatment for AMI.\",\n  \"evidence\": [\n    \"Median delay time was longer for women compared to men (4.4 hours vs 3.5 hours), although the difference was not significant. Single women delayed longer than single men (P = .03), and women who were alone when symptoms began delayed longer than women with someone (P = .03). Women who received advice to seek help or call 911 upon symptom onset had shorter delays compared to women who were not advised to call 911 (P = .01). Men at home delayed longer than men who experienced their symptoms outside the home (P = .01). Men with emergency room insurance delayed longer than men without emergency room insurance (P = .03), and men who took an ambulance to the hospital had shorter delay times than men who took other means of transportation (P = .04).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_25394614", "pmid": "25394614", "task": "evidence_qa", "question": "Does timing of initial surfactant treatment make a difference in rates of chronic lung disease or mortality in premature infants?", "context": "OBJECTIVE: To compare two treatment strategies in preterm infants with or at risk of respiratory distress syndrome: early surfactant administration (within one hour of birth) versus late surfactant administration, in a geographically defined population.\n\nOUTCOME: The primary outcome was chronic lung disease (CLD) and mortality before/at 36 weeks. Secondary outcomes included: duration of mechanical ventilation and continuous positive airway pressure (CPAP), post-natal steroids for CLD and major neonatal morbidities.\n\nSUBJECTS: Premature infants born at 22-32 weeks' gestation between January 2006 and December 2009.\n\nSETTING: Ten neonatal intensive care units (NICUs) in New South Wales (NSW) and Australian Capital Territory (ACT), Australia.\n\nDESIGN: Retrospective analysis of prospectively collected data from the regional NICU database in NSW and ACT.\n\nRESULTS: Of the 2170 infants who received surfactant, 1182 (54.5%) and 988 (45.5%) received early and late surfactant, respectively. The early surfactant group was less mature (27.1 ± 2.1 versus 29.4 ± 2.1 weeks) and had more CLD and mortality (40.2% versus 20.0%). The multivariable analysis showed early surfactant to be associated with less duration of ventilation, longer duration of CPAP and longer hospital stay but had little or no impact on CLD/mortality.", "ground_truth": {"decision": "maybe", "answer": "Early surfactant administration is associated with shorter duration of ventilation but does not appear to be significantly protective against CLD/mortality among premature infants. This may support the growing evidence for consideration of CPAP as an alternative to routine intubation and early surfactant administration. Further investigation from large randomized clinical trials is warranted to confirm these results.", "evidence": ["Of the 2170 infants who received surfactant, 1182 (54.5%) and 988 (45.5%) received early and late surfactant, respectively. The early surfactant group was less mature (27.1 ± 2.1 versus 29.4 ± 2.1 weeks) and had more CLD and mortality (40.2% versus 20.0%). The multivariable analysis showed early surfactant to be associated with less duration of ventilation, longer duration of CPAP and longer hospital stay but had little or no impact on CLD/mortality."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: To compare two treatment strategies in preterm infants with or at risk of respiratory distress syndrome: early surfactant administration (within one hour of birth) versus late surfactant administration, in a geographically defined population.\n\nOUTCOME: The primary outcome was chronic lung disease (CLD) and mortality before/at 36 weeks. Secondary outcomes included: duration of mechanical ventilation and continuous positive airway pressure (CPAP), post-natal steroids for CLD and major neonatal morbidities.\n\nSUBJECTS: Premature infants born at 22-32 weeks' gestation between January 2006 and December 2009.\n\nSETTING: Ten neonatal intensive care units (NICUs) in New South Wales (NSW) and Australian Capital Territory (ACT), Australia.\n\nDESIGN: Retrospective analysis of prospectively collected data from the regional NICU database in NSW and ACT.\n\nRESULTS: Of the 2170 infants who received surfactant, 1182 (54.5%) and 988 (45.5%) received early and late surfactant, respectively. The early surfactant group was less mature (27.1 ± 2.1 versus 29.4 ± 2.1 weeks) and had more CLD and mortality (40.2% versus 20.0%). The multivariable analysis showed early surfactant to be associated with less duration of ventilation, longer duration of CPAP and longer hospital stay but had little or no impact on CLD/mortality.\n\nBiomedical Question:\nDoes timing of initial surfactant treatment make a difference in rates of chronic lung disease or mortality in premature infants?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"Early surfactant administration is associated with shorter duration of ventilation but does not appear to be significantly protective against CLD/mortality among premature infants. This may support the growing evidence for consideration of CPAP as an alternative to routine intubation and early surfactant administration. Further investigation from large randomized clinical trials is warranted to confirm these results.\",\n  \"evidence\": [\n    \"Of the 2170 infants who received surfactant, 1182 (54.5%) and 988 (45.5%) received early and late surfactant, respectively. The early surfactant group was less mature (27.1 ± 2.1 versus 29.4 ± 2.1 weeks) and had more CLD and mortality (40.2% versus 20.0%). The multivariable analysis showed early surfactant to be associated with less duration of ventilation, longer duration of CPAP and longer hospital stay but had little or no impact on CLD/mortality.\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_14692023", "pmid": "14692023", "task": "evidence_qa", "question": "Is breast cancer survival improving?", "context": "BACKGROUND: Despite advances in therapies for breast cancer, improvement in survival for patients with recurrent or metastatic breast cancer has been difficult to establish. The objective of the current study was to determine whether the survival of women with recurrent breast cancer has improved from 1974 to 2000.\n\nMETHODS: The authors analyzed the survival experience of 834 women who developed recurrent breast cancer between November 1974 and December 2000. All patients had been treated previously with adjuvant anthracycline-based protocols. Patients were divided into five consecutive groups based on year of breast cancer recurrence, and survival was compared across the five groups. Because some prognostic variables were divided unevenly divided among the cohorts, a multivariate model was created to determine the association of year of recurrence and survival after accounting for other prognostic factors.\n\nRESULTS: In the unadjusted analysis, there was a statistically significant improvement in survival across the five groups, and the more recent cohorts had longer survival (P<0.001). Other variables that predicted longer survival after breast cancer recurrence included smaller initial tumor size, lower stage of disease, fewer lymph nodes involved, longer disease-free interval, estrogen receptor-positive tumors, and nonvisceral dominant site of disease recurrence. In the multivariate analysis, which adjusted for these prognostic factors, year of recurrence was associated with a trend toward improved survival, with a 1% reduction in risk for each increasing year.", "ground_truth": {"decision": "yes", "answer": "For these cohorts of patients, the authors present data suggesting that the prognosis for patients with recurrent breast cancer improved between 1974 and 2000.", "evidence": ["In the unadjusted analysis, there was a statistically significant improvement in survival across the five groups, and the more recent cohorts had longer survival (P<0.001). Other variables that predicted longer survival after breast cancer recurrence included smaller initial tumor size, lower stage of disease, fewer lymph nodes involved, longer disease-free interval, estrogen receptor-positive tumors, and nonvisceral dominant site of disease recurrence. In the multivariate analysis, which adjusted for these prognostic factors, year of recurrence was associated with a trend toward improved survival, with a 1% reduction in risk for each increasing year."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Despite advances in therapies for breast cancer, improvement in survival for patients with recurrent or metastatic breast cancer has been difficult to establish. The objective of the current study was to determine whether the survival of women with recurrent breast cancer has improved from 1974 to 2000.\n\nMETHODS: The authors analyzed the survival experience of 834 women who developed recurrent breast cancer between November 1974 and December 2000. All patients had been treated previously with adjuvant anthracycline-based protocols. Patients were divided into five consecutive groups based on year of breast cancer recurrence, and survival was compared across the five groups. Because some prognostic variables were divided unevenly divided among the cohorts, a multivariate model was created to determine the association of year of recurrence and survival after accounting for other prognostic factors.\n\nRESULTS: In the unadjusted analysis, there was a statistically significant improvement in survival across the five groups, and the more recent cohorts had longer survival (P<0.001). Other variables that predicted longer survival after breast cancer recurrence included smaller initial tumor size, lower stage of disease, fewer lymph nodes involved, longer disease-free interval, estrogen receptor-positive tumors, and nonvisceral dominant site of disease recurrence. In the multivariate analysis, which adjusted for these prognostic factors, year of recurrence was associated with a trend toward improved survival, with a 1% reduction in risk for each increasing year.\n\nBiomedical Question:\nIs breast cancer survival improving?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"For these cohorts of patients, the authors present data suggesting that the prognosis for patients with recurrent breast cancer improved between 1974 and 2000.\",\n  \"evidence\": [\n    \"In the unadjusted analysis, there was a statistically significant improvement in survival across the five groups, and the more recent cohorts had longer survival (P<0.001). Other variables that predicted longer survival after breast cancer recurrence included smaller initial tumor size, lower stage of disease, fewer lymph nodes involved, longer disease-free interval, estrogen receptor-positive tumors, and nonvisceral dominant site of disease recurrence. In the multivariate analysis, which adjusted for these prognostic factors, year of recurrence was associated with a trend toward improved survival, with a 1% reduction in risk for each increasing year.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_24666444", "pmid": "24666444", "task": "evidence_qa", "question": "Is there any evidence of a \"July effect\" in patients undergoing major cancer surgery?", "context": "BACKGROUND: The \"July effect\" refers to the phenomenon of adverse impacts on patient care arising from the changeover in medical staff that takes place during this month at academic medical centres in North America. There has been some evidence supporting the presence of the July effect, including data from surgical specialties. Uniformity of care, regardless of time of year, is required for patients undergoing major cancer surgery. We therefore sought to perform a population-level assessment for the presence of a July effect in this field.\n\nMETHODS: We used the Nationwide Inpatient Sample to abstract data on patients undergoing 1 of 8 major cancer surgeries at academic medical centres between Jan. 1, 1999, and Dec. 30, 2009. The primary outcomes examined were postoperative complications and in-hospital mortality. Univariate analyses and subsequently multivariate analyses, controlling for patient and hospital characteristics, were performed to identify whether the time of surgery was an independent predictor of outcome after major cancer surgery.\n\nRESULTS: On univariate analysis, the overall postoperative complication rate, as well as genitourinary and hematologic complications specifically, was higher in July than the rest of the year. However, on multivariate analysis, only hematologic complications were significantly higher in July, with no difference in overall postoperative complication rate or in-hospital mortality for all 8 surgeries considered separately or together.", "ground_truth": {"decision": "no", "answer": "On the whole, the data confirm an absence of a July effect in patients undergoing major cancer surgery.", "evidence": ["On univariate analysis, the overall postoperative complication rate, as well as genitourinary and hematologic complications specifically, was higher in July than the rest of the year. However, on multivariate analysis, only hematologic complications were significantly higher in July, with no difference in overall postoperative complication rate or in-hospital mortality for all 8 surgeries considered separately or together."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: The \"July effect\" refers to the phenomenon of adverse impacts on patient care arising from the changeover in medical staff that takes place during this month at academic medical centres in North America. There has been some evidence supporting the presence of the July effect, including data from surgical specialties. Uniformity of care, regardless of time of year, is required for patients undergoing major cancer surgery. We therefore sought to perform a population-level assessment for the presence of a July effect in this field.\n\nMETHODS: We used the Nationwide Inpatient Sample to abstract data on patients undergoing 1 of 8 major cancer surgeries at academic medical centres between Jan. 1, 1999, and Dec. 30, 2009. The primary outcomes examined were postoperative complications and in-hospital mortality. Univariate analyses and subsequently multivariate analyses, controlling for patient and hospital characteristics, were performed to identify whether the time of surgery was an independent predictor of outcome after major cancer surgery.\n\nRESULTS: On univariate analysis, the overall postoperative complication rate, as well as genitourinary and hematologic complications specifically, was higher in July than the rest of the year. However, on multivariate analysis, only hematologic complications were significantly higher in July, with no difference in overall postoperative complication rate or in-hospital mortality for all 8 surgeries considered separately or together.\n\nBiomedical Question:\nIs there any evidence of a \"July effect\" in patients undergoing major cancer surgery?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"On the whole, the data confirm an absence of a July effect in patients undergoing major cancer surgery.\",\n  \"evidence\": [\n    \"On univariate analysis, the overall postoperative complication rate, as well as genitourinary and hematologic complications specifically, was higher in July than the rest of the year. However, on multivariate analysis, only hematologic complications were significantly higher in July, with no difference in overall postoperative complication rate or in-hospital mortality for all 8 surgeries considered separately or together.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_21459725", "pmid": "21459725", "task": "evidence_qa", "question": "Xanthogranulomatous cholecystitis: a premalignant condition?", "context": "BACKGROUND: Xanthogranulomatous cholecystitis (XGC) is an uncommon variant of chronic cholecystitis, characterized by marked thickening of the gallbladder wall and dense local adhesions. It often mimics a gallbladder carcinoma (GBC), and may coexist with GBC, leading to a diagnostic dilemma. Furthermore, the premalignant nature of this entity is not known. This study was undertaken to assess the p53, PCNA and beta-catenin expression in XGC in comparison to GBC and chronic inflammation.\n\nMETHODS: Sections from paraffin-embedded blocks of surgically resected specimens of GBC (69 cases), XGC (65), chronic cholecystitis (18) and control gallbladder (10) were stained with the monoclonal antibodies to p53 and PCNA, and a polyclonal antibody to beta-catenin. p53 expression was scored as the percentage of nuclei stained. PCNA expression was scored as the product of the percentage of nuclei stained and the intensity of the staining (1-3). A cut-off value of 80 for this score was taken as a positive result. Beta-catenin expression was scored as type of expression-membranous, cytoplasmic or nuclear staining.\n\nRESULTS: p53 mutation was positive in 52% of GBC cases and 3% of XGC, but was not expressed in chronic cholecystitis and control gallbladders. p53 expression was lower in XGC than in GBC (P<0.0001). PCNA expression was seen in 65% of GBC cases and 11% of XGC, but not in chronic cholecystitis and control gallbladders. PCNA expression was higher in GBC than XGC (P=0.0001), but there was no significant difference between the XGC, chronic cholecystitis and control gallbladder groups. Beta-catenin expression was positive in the GBC, XGC, chronic cholecystitis and control gallbladder groups. But the expression pattern in XGC, chronic cholecystitis and control gallbladders was homogenously membranous, whereas in GBC the membranous expression pattern was altered to cytoplasmic and nuclear.", "ground_truth": {"decision": "no", "answer": "The expression of p53, PCNA and beta-catenin in XGC was significantly different from GBC and similar to chronic cholecystitis, thus indicating the inflammatory nature of XGC and may not support a premalignant nature of the lesion.", "evidence": ["p53 mutation was positive in 52% of GBC cases and 3% of XGC, but was not expressed in chronic cholecystitis and control gallbladders. p53 expression was lower in XGC than in GBC (P<0.0001). PCNA expression was seen in 65% of GBC cases and 11% of XGC, but not in chronic cholecystitis and control gallbladders. PCNA expression was higher in GBC than XGC (P=0.0001), but there was no significant difference between the XGC, chronic cholecystitis and control gallbladder groups. Beta-catenin expression was positive in the GBC, XGC, chronic cholecystitis and control gallbladder groups. But the expression pattern in XGC, chronic cholecystitis and control gallbladders was homogenously membranous, whereas in GBC the membranous expression pattern was altered to cytoplasmic and nuclear."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Xanthogranulomatous cholecystitis (XGC) is an uncommon variant of chronic cholecystitis, characterized by marked thickening of the gallbladder wall and dense local adhesions. It often mimics a gallbladder carcinoma (GBC), and may coexist with GBC, leading to a diagnostic dilemma. Furthermore, the premalignant nature of this entity is not known. This study was undertaken to assess the p53, PCNA and beta-catenin expression in XGC in comparison to GBC and chronic inflammation.\n\nMETHODS: Sections from paraffin-embedded blocks of surgically resected specimens of GBC (69 cases), XGC (65), chronic cholecystitis (18) and control gallbladder (10) were stained with the monoclonal antibodies to p53 and PCNA, and a polyclonal antibody to beta-catenin. p53 expression was scored as the percentage of nuclei stained. PCNA expression was scored as the product of the percentage of nuclei stained and the intensity of the staining (1-3). A cut-off value of 80 for this score was taken as a positive result. Beta-catenin expression was scored as type of expression-membranous, cytoplasmic or nuclear staining.\n\nRESULTS: p53 mutation was positive in 52% of GBC cases and 3% of XGC, but was not expressed in chronic cholecystitis and control gallbladders. p53 expression was lower in XGC than in GBC (P<0.0001). PCNA expression was seen in 65% of GBC cases and 11% of XGC, but not in chronic cholecystitis and control gallbladders. PCNA expression was higher in GBC than XGC (P=0.0001), but there was no significant difference between the XGC, chronic cholecystitis and control gallbladder groups. Beta-catenin expression was positive in the GBC, XGC, chronic cholecystitis and control gallbladder groups. But the expression pattern in XGC, chronic cholecystitis and control gallbladders was homogenously membranous, whereas in GBC the membranous expression pattern was altered to cytoplasmic and nuclear.\n\nBiomedical Question:\nXanthogranulomatous cholecystitis: a premalignant condition?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"The expression of p53, PCNA and beta-catenin in XGC was significantly different from GBC and similar to chronic cholecystitis, thus indicating the inflammatory nature of XGC and may not support a premalignant nature of the lesion.\",\n  \"evidence\": [\n    \"p53 mutation was positive in 52% of GBC cases and 3% of XGC, but was not expressed in chronic cholecystitis and control gallbladders. p53 expression was lower in XGC than in GBC (P<0.0001). PCNA expression was seen in 65% of GBC cases and 11% of XGC, but not in chronic cholecystitis and control gallbladders. PCNA expression was higher in GBC than XGC (P=0.0001), but there was no significant difference between the XGC, chronic cholecystitis and control gallbladder groups. Beta-catenin expression was positive in the GBC, XGC, chronic cholecystitis and control gallbladder groups. But the expression pattern in XGC, chronic cholecystitis and control gallbladders was homogenously membranous, whereas in GBC the membranous expression pattern was altered to cytoplasmic and nuclear.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_19401574", "pmid": "19401574", "task": "evidence_qa", "question": "Gadofosveset-enhanced MR angiography of carotid arteries: does steady-state imaging improve accuracy of first-pass imaging?", "context": "PURPOSE: To evaluate the diagnostic accuracy of gadofosveset-enhanced magnetic resonance (MR) angiography in the assessment of carotid artery stenosis, with digital subtraction angiography (DSA) as the reference standard, and to determine the value of reading first-pass, steady-state, and \"combined\" (first-pass plus steady-state) MR angiograms.\n\nMATERIALS AND METHODS: This study was approved by the local ethics committee, and all subjects gave written informed consent. MR angiography and DSA were performed in 84 patients (56 men, 28 women; age range, 61-76 years) with carotid artery stenosis at Doppler ultrasonography. Three readers reviewed the first-pass, steady-state, and combined MR data sets, and one independent observer evaluated the DSA images to assess stenosis degree, plaque morphology and ulceration, stenosis length, and tandem lesions. Interobserver agreement regarding MR angiographic findings was analyzed by using intraclass correlation and Cohen kappa coefficients. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were calculated by using the McNemar test to determine possible significant differences (P<.05).\n\nRESULTS: Interobserver agreement regarding all MR angiogram readings was substantial. For grading stenosis, sensitivity, specificity, PPV, and NPV were, respectively, 90%, 92%, 91%, and 91% for first-pass imaging; 95% each for steady-state imaging; and 96%, 99%, 99%, and 97% for combined imaging. For evaluation of plaque morphology, respective values were 84%, 86%, 88%, and 82% for first-pass imaging; 98%, 97%, 98%, and 97% for steady-state imaging; and 98%, 100%, 100%, and 97% for combined imaging. Differences between the first-pass, steady-state, and combined image readings for assessment of stenosis degree and plaque morphology were significant (P<.001).", "ground_truth": {"decision": "yes", "answer": "Gadofosveset-enhanced MR angiography is a promising technique for imaging carotid artery stenosis. Steady-state image reading is superior to first-pass image reading, but the combined reading protocol is more accurate.", "evidence": ["Interobserver agreement regarding all MR angiogram readings was substantial. For grading stenosis, sensitivity, specificity, PPV, and NPV were, respectively, 90%, 92%, 91%, and 91% for first-pass imaging; 95% each for steady-state imaging; and 96%, 99%, 99%, and 97% for combined imaging. For evaluation of plaque morphology, respective values were 84%, 86%, 88%, and 82% for first-pass imaging; 98%, 97%, 98%, and 97% for steady-state imaging; and 98%, 100%, 100%, and 97% for combined imaging. Differences between the first-pass, steady-state, and combined image readings for assessment of stenosis degree and plaque morphology were significant (P<.001)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: To evaluate the diagnostic accuracy of gadofosveset-enhanced magnetic resonance (MR) angiography in the assessment of carotid artery stenosis, with digital subtraction angiography (DSA) as the reference standard, and to determine the value of reading first-pass, steady-state, and \"combined\" (first-pass plus steady-state) MR angiograms.\n\nMATERIALS AND METHODS: This study was approved by the local ethics committee, and all subjects gave written informed consent. MR angiography and DSA were performed in 84 patients (56 men, 28 women; age range, 61-76 years) with carotid artery stenosis at Doppler ultrasonography. Three readers reviewed the first-pass, steady-state, and combined MR data sets, and one independent observer evaluated the DSA images to assess stenosis degree, plaque morphology and ulceration, stenosis length, and tandem lesions. Interobserver agreement regarding MR angiographic findings was analyzed by using intraclass correlation and Cohen kappa coefficients. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were calculated by using the McNemar test to determine possible significant differences (P<.05).\n\nRESULTS: Interobserver agreement regarding all MR angiogram readings was substantial. For grading stenosis, sensitivity, specificity, PPV, and NPV were, respectively, 90%, 92%, 91%, and 91% for first-pass imaging; 95% each for steady-state imaging; and 96%, 99%, 99%, and 97% for combined imaging. For evaluation of plaque morphology, respective values were 84%, 86%, 88%, and 82% for first-pass imaging; 98%, 97%, 98%, and 97% for steady-state imaging; and 98%, 100%, 100%, and 97% for combined imaging. Differences between the first-pass, steady-state, and combined image readings for assessment of stenosis degree and plaque morphology were significant (P<.001).\n\nBiomedical Question:\nGadofosveset-enhanced MR angiography of carotid arteries: does steady-state imaging improve accuracy of first-pass imaging?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Gadofosveset-enhanced MR angiography is a promising technique for imaging carotid artery stenosis. Steady-state image reading is superior to first-pass image reading, but the combined reading protocol is more accurate.\",\n  \"evidence\": [\n    \"Interobserver agreement regarding all MR angiogram readings was substantial. For grading stenosis, sensitivity, specificity, PPV, and NPV were, respectively, 90%, 92%, 91%, and 91% for first-pass imaging; 95% each for steady-state imaging; and 96%, 99%, 99%, and 97% for combined imaging. For evaluation of plaque morphology, respective values were 84%, 86%, 88%, and 82% for first-pass imaging; 98%, 97%, 98%, and 97% for steady-state imaging; and 98%, 100%, 100%, and 97% for combined imaging. Differences between the first-pass, steady-state, and combined image readings for assessment of stenosis degree and plaque morphology were significant (P<.001).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_17444776", "pmid": "17444776", "task": "evidence_qa", "question": "Is the holmium:YAG laser the best intracorporeal lithotripter for the ureter?", "context": "PURPOSE: To study the efficiency and safety of holmium:YAG laser lithotripsy for ureteral stones.\n\nPATIENTS AND METHODS: A series of 188 patients with 208 ureteral stones were treated with semirigid ureteroscopy and holmium:YAG laser lithotripsy from January 2003 to December 2005. Of the stones, 116 were lower ureteral, 37 middle ureteral, and 55 upper ureteral.\n\nRESULTS: The success rate was 92.7% at the time of ureteroscopy and 96.7% at 3 months. The failures were secondary to retropulsion of the stones (3.3%). There were no perforations and one stricture. Stenting was done in 90% of patients.", "ground_truth": {"decision": "yes", "answer": "The Holmium:YAG laser is an ideal intracorporeal lithotripter for ureteral calculi, with a high success rate and low morbidity.", "evidence": ["The success rate was 92.7% at the time of ureteroscopy and 96.7% at 3 months. The failures were secondary to retropulsion of the stones (3.3%). There were no perforations and one stricture. Stenting was done in 90% of patients."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: To study the efficiency and safety of holmium:YAG laser lithotripsy for ureteral stones.\n\nPATIENTS AND METHODS: A series of 188 patients with 208 ureteral stones were treated with semirigid ureteroscopy and holmium:YAG laser lithotripsy from January 2003 to December 2005. Of the stones, 116 were lower ureteral, 37 middle ureteral, and 55 upper ureteral.\n\nRESULTS: The success rate was 92.7% at the time of ureteroscopy and 96.7% at 3 months. The failures were secondary to retropulsion of the stones (3.3%). There were no perforations and one stricture. Stenting was done in 90% of patients.\n\nBiomedical Question:\nIs the holmium:YAG laser the best intracorporeal lithotripter for the ureter?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"The Holmium:YAG laser is an ideal intracorporeal lithotripter for ureteral calculi, with a high success rate and low morbidity.\",\n  \"evidence\": [\n    \"The success rate was 92.7% at the time of ureteroscopy and 96.7% at 3 months. The failures were secondary to retropulsion of the stones (3.3%). There were no perforations and one stricture. Stenting was done in 90% of patients.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_10490564", "pmid": "10490564", "task": "evidence_qa", "question": "Hypotension in patients with coronary disease: can profound hypotensive events cause myocardial ischaemic events?", "context": "OBJECTIVE: To determine whether anginal episodes might be related to extremes of hypotension in patients with ischaemic heart disease taking drugs to treat angina and heart failure.\n\nDESIGN AND SETTING: Observational study of patients with ischaemic heart disease attending an urban tertiary referral cardiology centre.\n\nINTERVENTIONS AND OUTCOME MEASURES: A selected patient population was enrolled, having: angina on one or more hypotensive cardiovascular medications; hypotension on clinic or ambulatory measurement; and a resting ECG suitable for ambulatory monitoring. Patients had echocardiography, ambulatory blood pressure monitoring, and Holter monitoring. Hypotension induced ischaemic (HII) events were defined as episodes of ST segment ischaemia occurring at least one minute after an ambulatory blood pressure measurement (systolic/diastolic) below 100/65 mm Hg during the day, or 90/50 mm Hg at night.\n\nRESULTS: 25 suitable patients were enrolled, and 107 hypotensive events were documented. 40 ST events occurred in 14 patients, of which a quarter were symptomatic. Fourteen HII events occurred in eight patients, with 13 of the 14 preceded by a fall in diastolic pressure (median diastolic pressure 57.5 mm Hg, interquartile range 11, maximum 72 mm Hg, minimum 45 mm Hg), and six preceded by a fall in systolic pressure (chi(2) = 11.9, p<0.001). ST events were significantly associated with preceding hypotensive events (chi(2) = 40.2, p<0.0001). Patients with HII events were more frequently taking multiple hypotensive drug regimens (8/8 v 9/17, chi(2) = 5.54, p = 0.022).", "ground_truth": {"decision": "yes", "answer": "In patients with ischaemic heart disease and hypotension, symptomatic and silent ischaemia occurred in a temporally causal relation with hypotension, particularly for diastolic pressures, suggesting that patients with coronary disease may be susceptible to ischaemic events incurred as a result of low blood pressure caused by excessive hypotensive drug treatment.", "evidence": ["25 suitable patients were enrolled, and 107 hypotensive events were documented. 40 ST events occurred in 14 patients, of which a quarter were symptomatic. Fourteen HII events occurred in eight patients, with 13 of the 14 preceded by a fall in diastolic pressure (median diastolic pressure 57.5 mm Hg, interquartile range 11, maximum 72 mm Hg, minimum 45 mm Hg), and six preceded by a fall in systolic pressure (chi(2) = 11.9, p<0.001). ST events were significantly associated with preceding hypotensive events (chi(2) = 40.2, p<0.0001). Patients with HII events were more frequently taking multiple hypotensive drug regimens (8/8 v 9/17, chi(2) = 5.54, p = 0.022)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: To determine whether anginal episodes might be related to extremes of hypotension in patients with ischaemic heart disease taking drugs to treat angina and heart failure.\n\nDESIGN AND SETTING: Observational study of patients with ischaemic heart disease attending an urban tertiary referral cardiology centre.\n\nINTERVENTIONS AND OUTCOME MEASURES: A selected patient population was enrolled, having: angina on one or more hypotensive cardiovascular medications; hypotension on clinic or ambulatory measurement; and a resting ECG suitable for ambulatory monitoring. Patients had echocardiography, ambulatory blood pressure monitoring, and Holter monitoring. Hypotension induced ischaemic (HII) events were defined as episodes of ST segment ischaemia occurring at least one minute after an ambulatory blood pressure measurement (systolic/diastolic) below 100/65 mm Hg during the day, or 90/50 mm Hg at night.\n\nRESULTS: 25 suitable patients were enrolled, and 107 hypotensive events were documented. 40 ST events occurred in 14 patients, of which a quarter were symptomatic. Fourteen HII events occurred in eight patients, with 13 of the 14 preceded by a fall in diastolic pressure (median diastolic pressure 57.5 mm Hg, interquartile range 11, maximum 72 mm Hg, minimum 45 mm Hg), and six preceded by a fall in systolic pressure (chi(2) = 11.9, p<0.001). ST events were significantly associated with preceding hypotensive events (chi(2) = 40.2, p<0.0001). Patients with HII events were more frequently taking multiple hypotensive drug regimens (8/8 v 9/17, chi(2) = 5.54, p = 0.022).\n\nBiomedical Question:\nHypotension in patients with coronary disease: can profound hypotensive events cause myocardial ischaemic events?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"In patients with ischaemic heart disease and hypotension, symptomatic and silent ischaemia occurred in a temporally causal relation with hypotension, particularly for diastolic pressures, suggesting that patients with coronary disease may be susceptible to ischaemic events incurred as a result of low blood pressure caused by excessive hypotensive drug treatment.\",\n  \"evidence\": [\n    \"25 suitable patients were enrolled, and 107 hypotensive events were documented. 40 ST events occurred in 14 patients, of which a quarter were symptomatic. Fourteen HII events occurred in eight patients, with 13 of the 14 preceded by a fall in diastolic pressure (median diastolic pressure 57.5 mm Hg, interquartile range 11, maximum 72 mm Hg, minimum 45 mm Hg), and six preceded by a fall in systolic pressure (chi(2) = 11.9, p<0.001). ST events were significantly associated with preceding hypotensive events (chi(2) = 40.2, p<0.0001). Patients with HII events were more frequently taking multiple hypotensive drug regimens (8/8 v 9/17, chi(2) = 5.54, p = 0.022).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_23048048", "pmid": "23048048", "task": "evidence_qa", "question": "Risky sexual behavior among college students With ADHD: is the mother-child relationship protective?", "context": "OBJECTIVE: This study examined the extent to which ADHD was associated with risky sexual behaviors (RSBs) in a sample of 92 undergraduates with (n = 44) and without (n = 48) ADHD. Mother-child relationship quality was examined as a potential moderator.\n\nMETHOD: We conducted comprehensive assessments for ADHD and comorbid conditions and collected measures of RSB and mother-child relationship quality.\n\nRESULTS: Female students with ADHD were least likely to use condoms than males overall and females without ADHD. An interaction between ADHD and mother-child relationship quality accounted for significant variance in the number of past-year sexual partners, such that a high-quality relationship was protective only for students with ADHD. No other significant associations were found between ADHD and RSB.", "ground_truth": {"decision": "yes", "answer": "Results suggest that female college students with ADHD are at risk for unprotected sex. Moreover, a positive mother-child relationship may be protective for college students with ADHD in relation to RSB.", "evidence": ["Female students with ADHD were least likely to use condoms than males overall and females without ADHD. An interaction between ADHD and mother-child relationship quality accounted for significant variance in the number of past-year sexual partners, such that a high-quality relationship was protective only for students with ADHD. No other significant associations were found between ADHD and RSB."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: This study examined the extent to which ADHD was associated with risky sexual behaviors (RSBs) in a sample of 92 undergraduates with (n = 44) and without (n = 48) ADHD. Mother-child relationship quality was examined as a potential moderator.\n\nMETHOD: We conducted comprehensive assessments for ADHD and comorbid conditions and collected measures of RSB and mother-child relationship quality.\n\nRESULTS: Female students with ADHD were least likely to use condoms than males overall and females without ADHD. An interaction between ADHD and mother-child relationship quality accounted for significant variance in the number of past-year sexual partners, such that a high-quality relationship was protective only for students with ADHD. No other significant associations were found between ADHD and RSB.\n\nBiomedical Question:\nRisky sexual behavior among college students With ADHD: is the mother-child relationship protective?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Results suggest that female college students with ADHD are at risk for unprotected sex. Moreover, a positive mother-child relationship may be protective for college students with ADHD in relation to RSB.\",\n  \"evidence\": [\n    \"Female students with ADHD were least likely to use condoms than males overall and females without ADHD. An interaction between ADHD and mother-child relationship quality accounted for significant variance in the number of past-year sexual partners, such that a high-quality relationship was protective only for students with ADHD. No other significant associations were found between ADHD and RSB.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_14655021", "pmid": "14655021", "task": "evidence_qa", "question": "Juvenile ankylosing spondylitis--is it the same disease as adult ankylosing spondylitis?", "context": "OBJECTIVES: Juvenile and adult forms of ankylosing spondylitis (AS) have been shown to have different clinical presentation and outcome in Caucasians. We did this retrospective analysis to see if similar differences exist in the Indian population.\n\nPATIENTS AND METHODS: Case records of 210 Indian patients diagnosed with AS according to modified New York criteria were reviewed. Data were collected regarding age of onset, clinical features, drug treatment, and outcome at last follow-up. Patients with onset before 17 years of age were classified as having juvenile AS (JAS) and the rest with adult AS (AAS).\n\nRESULTS: There were 150 patients with AAS and 60 with JAS. The latter had higher male preponderance, more frequent onset with peripheral arthritis, and greater involvement of hip and knee joints. Valvular dysfunction was seen only in patients with JAS.", "ground_truth": {"decision": "no", "answer": "In this group of subjects, juvenile AS had onset more often with oligoarthritis and enthesitis than with spinal disease. Hip and knee joint involvement was more common in JAS than AAS.", "evidence": ["There were 150 patients with AAS and 60 with JAS. The latter had higher male preponderance, more frequent onset with peripheral arthritis, and greater involvement of hip and knee joints. Valvular dysfunction was seen only in patients with JAS."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVES: Juvenile and adult forms of ankylosing spondylitis (AS) have been shown to have different clinical presentation and outcome in Caucasians. We did this retrospective analysis to see if similar differences exist in the Indian population.\n\nPATIENTS AND METHODS: Case records of 210 Indian patients diagnosed with AS according to modified New York criteria were reviewed. Data were collected regarding age of onset, clinical features, drug treatment, and outcome at last follow-up. Patients with onset before 17 years of age were classified as having juvenile AS (JAS) and the rest with adult AS (AAS).\n\nRESULTS: There were 150 patients with AAS and 60 with JAS. The latter had higher male preponderance, more frequent onset with peripheral arthritis, and greater involvement of hip and knee joints. Valvular dysfunction was seen only in patients with JAS.\n\nBiomedical Question:\nJuvenile ankylosing spondylitis--is it the same disease as adult ankylosing spondylitis?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"In this group of subjects, juvenile AS had onset more often with oligoarthritis and enthesitis than with spinal disease. Hip and knee joint involvement was more common in JAS than AAS.\",\n  \"evidence\": [\n    \"There were 150 patients with AAS and 60 with JAS. The latter had higher male preponderance, more frequent onset with peripheral arthritis, and greater involvement of hip and knee joints. Valvular dysfunction was seen only in patients with JAS.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_28707539", "pmid": "28707539", "task": "evidence_qa", "question": "Visceral adipose tissue area measurement at a single level: can it represent visceral adipose tissue volume?", "context": "OBJECTIVE: Measurement of visceral adipose tissue (VAT) needs to be accurate and sensitive to change for risk monitoring. The purpose of this study is to determine the CT slice location where VAT area can best reflect changes in VAT volume and body weight.\n\nMETHODS: 60 plain abdominal CT images from 30 males [mean age (range) 51 (41-68) years, mean body weight (range) 71.1 (101.9-50.9) kg] who underwent workplace screenings twice within a 1-year interval were evaluated. Automatically calculated and manually corrected areas of the VAT of various scan levels using \"freeform curve\" region of interest on CT were recorded and compared with body weight changes.\n\nRESULTS: The strongest correlations of VAT area with VAT volume and body weight changes were shown in a slice 3 cm above the lower margin of L3 with r values of 0.853 and 0.902, respectively.", "ground_truth": {"decision": "yes", "answer": "VAT area measurement at a single level 3 cm above the lower margin of the L3 vertebra is feasible and can reflect changes in VAT volume and body weight. Advances in knowledge: As VAT area at a CT slice 3cm above the lower margin of L3 can best reflect interval changes in VAT volume and body weight, VAT area measurement should be selected at this location.", "evidence": ["The strongest correlations of VAT area with VAT volume and body weight changes were shown in a slice 3 cm above the lower margin of L3 with r values of 0.853 and 0.902, respectively."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: Measurement of visceral adipose tissue (VAT) needs to be accurate and sensitive to change for risk monitoring. The purpose of this study is to determine the CT slice location where VAT area can best reflect changes in VAT volume and body weight.\n\nMETHODS: 60 plain abdominal CT images from 30 males [mean age (range) 51 (41-68) years, mean body weight (range) 71.1 (101.9-50.9) kg] who underwent workplace screenings twice within a 1-year interval were evaluated. Automatically calculated and manually corrected areas of the VAT of various scan levels using \"freeform curve\" region of interest on CT were recorded and compared with body weight changes.\n\nRESULTS: The strongest correlations of VAT area with VAT volume and body weight changes were shown in a slice 3 cm above the lower margin of L3 with r values of 0.853 and 0.902, respectively.\n\nBiomedical Question:\nVisceral adipose tissue area measurement at a single level: can it represent visceral adipose tissue volume?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"VAT area measurement at a single level 3 cm above the lower margin of the L3 vertebra is feasible and can reflect changes in VAT volume and body weight. Advances in knowledge: As VAT area at a CT slice 3cm above the lower margin of L3 can best reflect interval changes in VAT volume and body weight, VAT area measurement should be selected at this location.\",\n  \"evidence\": [\n    \"The strongest correlations of VAT area with VAT volume and body weight changes were shown in a slice 3 cm above the lower margin of L3 with r values of 0.853 and 0.902, respectively.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_26859535", "pmid": "26859535", "task": "evidence_qa", "question": "Screening History Among Women with Invasive Cervical Cancer in an Academic Medical Center: Will We Miss Cancers Following Updated Guidelines?", "context": "OBJECTIVE: Updated guidelines for the screening and management of cervical cancer in the United States recommend starting Papanicolaou (Pap) testing at age 21 and screening less frequently with less aggressive management for abnormalities. We sought to examine updated Pap test screening guidelines and how they may affect the detection of invasive cervical cancer, especially among women<30 years of age.\n\nMATERIALS AND METHODS: Patients diagnosed at Brigham and Women's Hospital with invasive cervical cancer between 2002 and 2012 were retrospectively identified. Prior screening history was obtained and patients were divided into two groups based on age<30 years or age ≥30 years. The two groups were then compared with respect to demographics, pathological findings, and time to diagnosis.\n\nRESULTS: A total of 288 patients with invasive cervical carcinoma were identified. Among these patients, 109 had adequate information on prior screening history. Invasive adenocarcinoma (IAC) was diagnosed in 37 (33.94%) patients, whereas 64 (58.72%) patients were diagnosed with invasive squamous cell carcinoma (ISCC). The remaining eight patients were diagnosed with other types of cancers of the cervix. A total of 13 patients were younger than 30 while 96 patients were 30 or older. The mean time from normal Pap to diagnosis of IAC was 15 months in patients younger than 30 years of age compared to 56 months in patients aged 30 and older (p < 0.001). The mean time from normal Pap to diagnosis of ISCC was 38 months in patients younger than 30 years of age and 82 months in patients aged 30 and older (p = 0.018).", "ground_truth": {"decision": "no", "answer": "In this small retrospective study, updated Pap test screening guidelines would not have missed invasive cancer on average among screened women age 30 and older. However, young patients aged 21-29 years may be at increased risk of developing IAC of the cervix between the recommended screening intervals.", "evidence": ["A total of 288 patients with invasive cervical carcinoma were identified. Among these patients, 109 had adequate information on prior screening history. Invasive adenocarcinoma (IAC) was diagnosed in 37 (33.94%) patients, whereas 64 (58.72%) patients were diagnosed with invasive squamous cell carcinoma (ISCC). The remaining eight patients were diagnosed with other types of cancers of the cervix. A total of 13 patients were younger than 30 while 96 patients were 30 or older. The mean time from normal Pap to diagnosis of IAC was 15 months in patients younger than 30 years of age compared to 56 months in patients aged 30 and older (p < 0.001). The mean time from normal Pap to diagnosis of ISCC was 38 months in patients younger than 30 years of age and 82 months in patients aged 30 and older (p = 0.018)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: Updated guidelines for the screening and management of cervical cancer in the United States recommend starting Papanicolaou (Pap) testing at age 21 and screening less frequently with less aggressive management for abnormalities. We sought to examine updated Pap test screening guidelines and how they may affect the detection of invasive cervical cancer, especially among women<30 years of age.\n\nMATERIALS AND METHODS: Patients diagnosed at Brigham and Women's Hospital with invasive cervical cancer between 2002 and 2012 were retrospectively identified. Prior screening history was obtained and patients were divided into two groups based on age<30 years or age ≥30 years. The two groups were then compared with respect to demographics, pathological findings, and time to diagnosis.\n\nRESULTS: A total of 288 patients with invasive cervical carcinoma were identified. Among these patients, 109 had adequate information on prior screening history. Invasive adenocarcinoma (IAC) was diagnosed in 37 (33.94%) patients, whereas 64 (58.72%) patients were diagnosed with invasive squamous cell carcinoma (ISCC). The remaining eight patients were diagnosed with other types of cancers of the cervix. A total of 13 patients were younger than 30 while 96 patients were 30 or older. The mean time from normal Pap to diagnosis of IAC was 15 months in patients younger than 30 years of age compared to 56 months in patients aged 30 and older (p < 0.001). The mean time from normal Pap to diagnosis of ISCC was 38 months in patients younger than 30 years of age and 82 months in patients aged 30 and older (p = 0.018).\n\nBiomedical Question:\nScreening History Among Women with Invasive Cervical Cancer in an Academic Medical Center: Will We Miss Cancers Following Updated Guidelines?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"In this small retrospective study, updated Pap test screening guidelines would not have missed invasive cancer on average among screened women age 30 and older. However, young patients aged 21-29 years may be at increased risk of developing IAC of the cervix between the recommended screening intervals.\",\n  \"evidence\": [\n    \"A total of 288 patients with invasive cervical carcinoma were identified. Among these patients, 109 had adequate information on prior screening history. Invasive adenocarcinoma (IAC) was diagnosed in 37 (33.94%) patients, whereas 64 (58.72%) patients were diagnosed with invasive squamous cell carcinoma (ISCC). The remaining eight patients were diagnosed with other types of cancers of the cervix. A total of 13 patients were younger than 30 while 96 patients were 30 or older. The mean time from normal Pap to diagnosis of IAC was 15 months in patients younger than 30 years of age compared to 56 months in patients aged 30 and older (p < 0.001). The mean time from normal Pap to diagnosis of ISCC was 38 months in patients younger than 30 years of age and 82 months in patients aged 30 and older (p = 0.018).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_12221908", "pmid": "12221908", "task": "evidence_qa", "question": "The HELPP syndrome--evidence of a possible systemic inflammatory response in pre-eclampsia?", "context": "INTRODUCTION: The principal causes of morbidity and mortality during pregnancy in Mexico, are preeclampsia/eclampsia, obstetric hemorrhage and puerperium complications; this is, 62% of maternal deaths in last years. HELLP syndrome was observed between 5 to 25% of the mortality in pregnancies of 36 weeks or less.\n\nOBJECTIVE: To analyze patients with HELLP syndrome in ICU's (Intensive Care Unit) of a Gynecology and Obstetric Hospital, related to the abnormal hematological, hepatic and renal results with the obstetric case history and the clinical complications.\n\nMATERIALS AND METHODS: A transversal study in patients with HELLP syndrome during 1998 and 1999 were carry out.\n\nCASE DEFINITION: Peripheral blood with Microangiopathic hemolysis, elevated liver enzymes: AST, ALT over 40 UI/L, even when were LDH lower than 600 UI/L. It was evaluated the hepatic and renal function, platelets count, microangiopathic hemolysis, arterial pressure, seizures, icteric skin color, blindness, visual disturbances, nausea, vomiting and upper quadrant right abdominal pain. In newborn we analyzed gestational age, sex, weight and APGAR. We studied for an association between maternal and biochemical variables with Correlation Pearson Test, and dependence between variables with lineal regression model.\n\nRESULTS: 2878 patients with hypertensives disorders in pregnancy (11.64%). The 1.15% (n = 33) had HELLP syndrome with specific maternal mortality of 0.4 per 10,000 live birth, perinatal mortality of 1.62 per 10,000 live birth; and renal damage in 84.5%. Coefficient beta was higher between number of pregnancies to platelets count (-0.33) and creatinine clearance (-0.401).", "ground_truth": {"decision": "yes", "answer": "We found an important renal damage, low platelets, elevated liver enzymes in women with two or more pregnancies. Then we propose there are similarities between HELLP syndrome and Systemic Inflammatory Response Syndrome (SIRS) because they could have the same pathophysiology.", "evidence": ["2878 patients with hypertensives disorders in pregnancy (11.64%). The 1.15% (n = 33) had HELLP syndrome with specific maternal mortality of 0.4 per 10,000 live birth, perinatal mortality of 1.62 per 10,000 live birth; and renal damage in 84.5%. Coefficient beta was higher between number of pregnancies to platelets count (-0.33) and creatinine clearance (-0.401)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nINTRODUCTION: The principal causes of morbidity and mortality during pregnancy in Mexico, are preeclampsia/eclampsia, obstetric hemorrhage and puerperium complications; this is, 62% of maternal deaths in last years. HELLP syndrome was observed between 5 to 25% of the mortality in pregnancies of 36 weeks or less.\n\nOBJECTIVE: To analyze patients with HELLP syndrome in ICU's (Intensive Care Unit) of a Gynecology and Obstetric Hospital, related to the abnormal hematological, hepatic and renal results with the obstetric case history and the clinical complications.\n\nMATERIALS AND METHODS: A transversal study in patients with HELLP syndrome during 1998 and 1999 were carry out.\n\nCASE DEFINITION: Peripheral blood with Microangiopathic hemolysis, elevated liver enzymes: AST, ALT over 40 UI/L, even when were LDH lower than 600 UI/L. It was evaluated the hepatic and renal function, platelets count, microangiopathic hemolysis, arterial pressure, seizures, icteric skin color, blindness, visual disturbances, nausea, vomiting and upper quadrant right abdominal pain. In newborn we analyzed gestational age, sex, weight and APGAR. We studied for an association between maternal and biochemical variables with Correlation Pearson Test, and dependence between variables with lineal regression model.\n\nRESULTS: 2878 patients with hypertensives disorders in pregnancy (11.64%). The 1.15% (n = 33) had HELLP syndrome with specific maternal mortality of 0.4 per 10,000 live birth, perinatal mortality of 1.62 per 10,000 live birth; and renal damage in 84.5%. Coefficient beta was higher between number of pregnancies to platelets count (-0.33) and creatinine clearance (-0.401).\n\nBiomedical Question:\nThe HELPP syndrome--evidence of a possible systemic inflammatory response in pre-eclampsia?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"We found an important renal damage, low platelets, elevated liver enzymes in women with two or more pregnancies. Then we propose there are similarities between HELLP syndrome and Systemic Inflammatory Response Syndrome (SIRS) because they could have the same pathophysiology.\",\n  \"evidence\": [\n    \"2878 patients with hypertensives disorders in pregnancy (11.64%). The 1.15% (n = 33) had HELLP syndrome with specific maternal mortality of 0.4 per 10,000 live birth, perinatal mortality of 1.62 per 10,000 live birth; and renal damage in 84.5%. Coefficient beta was higher between number of pregnancies to platelets count (-0.33) and creatinine clearance (-0.401).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_19664156", "pmid": "19664156", "task": "evidence_qa", "question": "Search engine as a diagnostic tool in difficult immunological and allergologic cases: is Google useful?", "context": "BACKGROUND: Web search engines are an important tool in communication and diffusion of knowledge. Among these, Google appears to be the most popular one: in August 2008, it accounted for 87% of all web searches in the UK, compared with Yahoo's 3.3%. Google's value as a diagnostic guide in general medicine was recently reported. The aim of this comparative cross-sectional study was to evaluate whether searching Google with disease-related terms was effective in the identification and diagnosis of complex immunological and allergic cases.\n\nMETHODS: Forty-five case reports were randomly selected by an independent observer from peer-reviewed medical journals. Clinical data were presented separately to three investigators, blinded to the final diagnoses. Investigator A was a Consultant with an expert knowledge in Internal Medicine and Allergy (IM&A) and basic computing skills. Investigator B was a Registrar in IM&A. Investigator C was a Research Nurse. Both Investigators B and C were familiar with computers and search engines. For every clinical case presented, each investigator independently carried out an Internet search using Google to provide a final diagnosis. Their results were then compared with the published diagnoses.\n\nRESULTS: Correct diagnoses were provided in 30/45 (66%) cases, 39/45 (86%) cases, and in 29/45 (64%) cases by investigator A, B, and C, respectively. All of the three investigators achieved the correct diagnosis in 19 cases (42%), and all of them failed in two cases.", "ground_truth": {"decision": "yes", "answer": "This Google-based search was useful to identify an appropriate diagnosis in complex immunological and allergic cases. Computing skills may help to get better results.", "evidence": ["Correct diagnoses were provided in 30/45 (66%) cases, 39/45 (86%) cases, and in 29/45 (64%) cases by investigator A, B, and C, respectively. All of the three investigators achieved the correct diagnosis in 19 cases (42%), and all of them failed in two cases."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Web search engines are an important tool in communication and diffusion of knowledge. Among these, Google appears to be the most popular one: in August 2008, it accounted for 87% of all web searches in the UK, compared with Yahoo's 3.3%. Google's value as a diagnostic guide in general medicine was recently reported. The aim of this comparative cross-sectional study was to evaluate whether searching Google with disease-related terms was effective in the identification and diagnosis of complex immunological and allergic cases.\n\nMETHODS: Forty-five case reports were randomly selected by an independent observer from peer-reviewed medical journals. Clinical data were presented separately to three investigators, blinded to the final diagnoses. Investigator A was a Consultant with an expert knowledge in Internal Medicine and Allergy (IM&A) and basic computing skills. Investigator B was a Registrar in IM&A. Investigator C was a Research Nurse. Both Investigators B and C were familiar with computers and search engines. For every clinical case presented, each investigator independently carried out an Internet search using Google to provide a final diagnosis. Their results were then compared with the published diagnoses.\n\nRESULTS: Correct diagnoses were provided in 30/45 (66%) cases, 39/45 (86%) cases, and in 29/45 (64%) cases by investigator A, B, and C, respectively. All of the three investigators achieved the correct diagnosis in 19 cases (42%), and all of them failed in two cases.\n\nBiomedical Question:\nSearch engine as a diagnostic tool in difficult immunological and allergologic cases: is Google useful?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"This Google-based search was useful to identify an appropriate diagnosis in complex immunological and allergic cases. Computing skills may help to get better results.\",\n  \"evidence\": [\n    \"Correct diagnoses were provided in 30/45 (66%) cases, 39/45 (86%) cases, and in 29/45 (64%) cases by investigator A, B, and C, respectively. All of the three investigators achieved the correct diagnosis in 19 cases (42%), and all of them failed in two cases.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_9465206", "pmid": "9465206", "task": "evidence_qa", "question": "\"Occult\" posttraumatic lesions of the knee: can magnetic resonance substitute for diagnostic arthroscopy?", "context": "PURPOSE: We investigated the actual role of MRI versus arthroscopy in the detection and characterization of occult bone and/or cartilage injuries in patients with previous musculoskeletal trauma of the knee, pain and severe functional impairment. Occult post-traumatic osteochondral injuries of the knee are trauma-related bone and/or cartilage damage missed at plain radiography.\n\nMATERIAL AND METHODS: We retrospectively selected 70 patients (men:women = 7:3; age range: 35 +/- 7 years) with a history of acute musculoskeletal trauma, negative conventional radiographs, pain and limited joint movements. All patients were submitted to conventional radiography, arthroscopy and MRI, the latter with 0.5 T units and T1-weighted SE. T2-weighted GE and FIR sequences with fat suppression.\n\nRESULTS AND DISCUSSION: We identified three types of occult post-traumatic injuries by morpho-topographic and signal intensity patterns: bone bruises (no. 25), subchondral (no. 33) and osteochondral (no. 35) injuries. Arthroscopy depicted 45 osteochondral and 19 chondral injuries. A bone bruise was defined as a typical subcortical area of signal loss, with various shapes, on T1-weighted images and of increased signal intensity on T2-weighted and FIR images. The cortical bone and articular cartilage were normal in all cases, while osteochondral injuries exhibited associated bone and cartilage damage with the same abnormal MR signal intensity. Sprain was the mechanism of injury in 52 cases, bruise in 12 and stress in 6. In 52 sprains (30 in valgus), the injury site was the lateral compartment in 92.3% of cases (100% in valgus), associated with meniscal damage in 73% of cases (90% in valgus) and with ligament injury in 90.4% (100% in valgus). In 12 bruises, the injury site was the lateral compartment in 58.3% of cases, the knee cap in 25% and the medial compartment in 16.7%; meniscal damage was associated in 25% of cases and ligament damage in 8.3%. In 6 stress injuries, the injury site was localized in the medial tibial condyle in 80% of cases, while meniscal and ligament tears were absent.", "ground_truth": {"decision": "yes", "answer": "After comparing MR with arthroscopic findings and reviewing the available literature, we conclude that arthroscopy permits the direct visualization of even fine articular surface changes but does not depict the subchondral bone, the most frequent site of injury detected with MRI. MRI was a very useful tool in the detection and characterization of the different types of occult bone and/or cartilage injuries and showed a statistically significant correlation between site and distribution of bone and cartilage injuries and between internal damage and trauma mechanisms. Therefore, we believe that MRI can help avoid diagnostic arthroscopy in the patients with a history of post-traumatic pain, acute articular blocks and negative radiographic findings.", "evidence": ["We identified three types of occult post-traumatic injuries by morpho-topographic and signal intensity patterns: bone bruises (no. 25), subchondral (no. 33) and osteochondral (no. 35) injuries. Arthroscopy depicted 45 osteochondral and 19 chondral injuries. A bone bruise was defined as a typical subcortical area of signal loss, with various shapes, on T1-weighted images and of increased signal intensity on T2-weighted and FIR images. The cortical bone and articular cartilage were normal in all cases, while osteochondral injuries exhibited associated bone and cartilage damage with the same abnormal MR signal intensity. Sprain was the mechanism of injury in 52 cases, bruise in 12 and stress in 6. In 52 sprains (30 in valgus), the injury site was the lateral compartment in 92.3% of cases (100% in valgus), associated with meniscal damage in 73% of cases (90% in valgus) and with ligament injury in 90.4% (100% in valgus). In 12 bruises, the injury site was the lateral compartment in 58.3% of cases, the knee cap in 25% and the medial compartment in 16.7%; meniscal damage was associated in 25% of cases and ligament damage in 8.3%. In 6 stress injuries, the injury site was localized in the medial tibial condyle in 80% of cases, while meniscal and ligament tears were absent."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: We investigated the actual role of MRI versus arthroscopy in the detection and characterization of occult bone and/or cartilage injuries in patients with previous musculoskeletal trauma of the knee, pain and severe functional impairment. Occult post-traumatic osteochondral injuries of the knee are trauma-related bone and/or cartilage damage missed at plain radiography.\n\nMATERIAL AND METHODS: We retrospectively selected 70 patients (men:women = 7:3; age range: 35 +/- 7 years) with a history of acute musculoskeletal trauma, negative conventional radiographs, pain and limited joint movements. All patients were submitted to conventional radiography, arthroscopy and MRI, the latter with 0.5 T units and T1-weighted SE. T2-weighted GE and FIR sequences with fat suppression.\n\nRESULTS AND DISCUSSION: We identified three types of occult post-traumatic injuries by morpho-topographic and signal intensity patterns: bone bruises (no. 25), subchondral (no. 33) and osteochondral (no. 35) injuries. Arthroscopy depicted 45 osteochondral and 19 chondral injuries. A bone bruise was defined as a typical subcortical area of signal loss, with various shapes, on T1-weighted images and of increased signal intensity on T2-weighted and FIR images. The cortical bone and articular cartilage were normal in all cases, while osteochondral injuries exhibited associated bone and cartilage damage with the same abnormal MR signal intensity. Sprain was the mechanism of injury in 52 cases, bruise in 12 and stress in 6. In 52 sprains (30 in valgus), the injury site was the lateral compartment in 92.3% of cases (100% in valgus), associated with meniscal damage in 73% of cases (90% in valgus) and with ligament injury in 90.4% (100% in valgus). In 12 bruises, the injury site was the lateral compartment in 58.3% of cases, the knee cap in 25% and the medial compartment in 16.7%; meniscal damage was associated in 25% of cases and ligament damage in 8.3%. In 6 stress injuries, the injury site was localized in the medial tibial condyle in 80% of cases, while meniscal and ligament tears were absent.\n\nBiomedical Question:\n\"Occult\" posttraumatic lesions of the knee: can magnetic resonance substitute for diagnostic arthroscopy?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"After comparing MR with arthroscopic findings and reviewing the available literature, we conclude that arthroscopy permits the direct visualization of even fine articular surface changes but does not depict the subchondral bone, the most frequent site of injury detected with MRI. MRI was a very useful tool in the detection and characterization of the different types of occult bone and/or cartilage injuries and showed a statistically significant correlation between site and distribution of bone and cartilage injuries and between internal damage and trauma mechanisms. Therefore, we believe that MRI can help avoid diagnostic arthroscopy in the patients with a history of post-traumatic pain, acute articular blocks and negative radiographic findings.\",\n  \"evidence\": [\n    \"We identified three types of occult post-traumatic injuries by morpho-topographic and signal intensity patterns: bone bruises (no. 25), subchondral (no. 33) and osteochondral (no. 35) injuries. Arthroscopy depicted 45 osteochondral and 19 chondral injuries. A bone bruise was defined as a typical subcortical area of signal loss, with various shapes, on T1-weighted images and of increased signal intensity on T2-weighted and FIR images. The cortical bone and articular cartilage were normal in all cases, while osteochondral injuries exhibited associated bone and cartilage damage with the same abnormal MR signal intensity. Sprain was the mechanism of injury in 52 cases, bruise in 12 and stress in 6. In 52 sprains (30 in valgus), the injury site was the lateral compartment in 92.3% of cases (100% in valgus), associated with meniscal damage in 73% of cases (90% in valgus) and with ligament injury in 90.4% (100% in valgus). In 12 bruises, the injury site was the lateral compartment in 58.3% of cases, the knee cap in 25% and the medial compartment in 16.7%; meniscal damage was associated in 25% of cases and ligament damage in 8.3%. In 6 stress injuries, the injury site was localized in the medial tibial condyle in 80% of cases, while meniscal and ligament tears were absent.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_16538201", "pmid": "16538201", "task": "evidence_qa", "question": "Does use of hydrophilic guidewires significantly improve technical success rates of peripheral PTA?", "context": "BACKGROUND: To determine whether the use of hydrophilic guidewires has increased the technical success rate of peripheral percutaneous transluminal angioplasty (PTA).MATERIAL/\n\nMETHODS: We performed 125 procedures and analyzed the technical success rates of PTA using the conventional guidewire first and then if needed, the hydrophilic guidewire for iliac and SFA stenoses or occlusions. Angioplasty was performed on 25 stenosed, 25 occluded iliac arteries and 25 stenosed, 50 occluded femoral arteries. The result was defined as technical success when the lesion was crossed by a guidewire and balloon, then it was dilated with restoration of vessel lumen and less than 30% residual stenosis and the rise in ABI values was at least 0.15 after 24 hours.\n\nRESULTS: The technical success rate after PTA of stenosed iliac arteries was achieved in 96% (24/25) using conventional wires and 100% using hydrophilic guidewire; in iliac occlusions, the rates were 60% (15/25) and 96%, respectively; in femoral stenosis - 84% (21/25) and 100%; in occlusions in the first group: lesions<10 cm -64% (16/25) and 96%, in the second group: lesions>10 cm -48% (12/25) and 88%. In the iliac group, there was no significant difference in the success of iliac stenosis PTA. However, there were significant changes in the success rates of PTA performed for SFA stenosis and iliac and SFA occlusions.", "ground_truth": {"decision": "maybe", "answer": "In summary, we report an overall improvement and high technical success rate for peripherial PTA. The use of hydrophilic guidewires made significant difference to the technical success rate of PTA, especially in occlusion and more complicated lesions.", "evidence": ["The technical success rate after PTA of stenosed iliac arteries was achieved in 96% (24/25) using conventional wires and 100% using hydrophilic guidewire; in iliac occlusions, the rates were 60% (15/25) and 96%, respectively; in femoral stenosis - 84% (21/25) and 100%; in occlusions in the first group: lesions<10 cm -64% (16/25) and 96%, in the second group: lesions>10 cm -48% (12/25) and 88%. In the iliac group, there was no significant difference in the success of iliac stenosis PTA. However, there were significant changes in the success rates of PTA performed for SFA stenosis and iliac and SFA occlusions."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: To determine whether the use of hydrophilic guidewires has increased the technical success rate of peripheral percutaneous transluminal angioplasty (PTA).MATERIAL/\n\nMETHODS: We performed 125 procedures and analyzed the technical success rates of PTA using the conventional guidewire first and then if needed, the hydrophilic guidewire for iliac and SFA stenoses or occlusions. Angioplasty was performed on 25 stenosed, 25 occluded iliac arteries and 25 stenosed, 50 occluded femoral arteries. The result was defined as technical success when the lesion was crossed by a guidewire and balloon, then it was dilated with restoration of vessel lumen and less than 30% residual stenosis and the rise in ABI values was at least 0.15 after 24 hours.\n\nRESULTS: The technical success rate after PTA of stenosed iliac arteries was achieved in 96% (24/25) using conventional wires and 100% using hydrophilic guidewire; in iliac occlusions, the rates were 60% (15/25) and 96%, respectively; in femoral stenosis - 84% (21/25) and 100%; in occlusions in the first group: lesions<10 cm -64% (16/25) and 96%, in the second group: lesions>10 cm -48% (12/25) and 88%. In the iliac group, there was no significant difference in the success of iliac stenosis PTA. However, there were significant changes in the success rates of PTA performed for SFA stenosis and iliac and SFA occlusions.\n\nBiomedical Question:\nDoes use of hydrophilic guidewires significantly improve technical success rates of peripheral PTA?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"In summary, we report an overall improvement and high technical success rate for peripherial PTA. The use of hydrophilic guidewires made significant difference to the technical success rate of PTA, especially in occlusion and more complicated lesions.\",\n  \"evidence\": [\n    \"The technical success rate after PTA of stenosed iliac arteries was achieved in 96% (24/25) using conventional wires and 100% using hydrophilic guidewire; in iliac occlusions, the rates were 60% (15/25) and 96%, respectively; in femoral stenosis - 84% (21/25) and 100%; in occlusions in the first group: lesions<10 cm -64% (16/25) and 96%, in the second group: lesions>10 cm -48% (12/25) and 88%. In the iliac group, there was no significant difference in the success of iliac stenosis PTA. However, there were significant changes in the success rates of PTA performed for SFA stenosis and iliac and SFA occlusions.\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_27050489", "pmid": "27050489", "task": "evidence_qa", "question": "The Prevalence of Incidentally Detected Idiopathic Misty Mesentery on Multidetector Computed Tomography: Can Obesity Be the Triggering Cause?", "context": "PURPOSE: Misty mesentery appearance is commonly reported in daily practice, usually as a secondary finding of various pathological entities, but sometimes it is encountered as an isolated finding that cannot be attributed to any other disease entity. We aimed to assess the prevalence of cases with incidentally detected idiopathic misty mesentery on computed tomography (CT) and to summarize the pathologies leading to this appearance.\n\nMETHODS: Medical records and initial and follow-up CT features of patients with misty mesentery appearance between January 2011 and January 2013 were analysed. The study included cases with no known cause of misty mesentery according to associated CT findings, clinical history, or biochemical manifestations, and excluded patients with diseases known to cause misty mesentery, lymph nodes greater than a short-axis diameter of 5 mm, discrete mesenteric masses, or bowel wall thickening.\n\nRESULTS: There were a total of 561 patients in whom misty mesentery appearance was depicted on abdominopelvic CT scans. A total of 80 cases were found to have isolated incidental idiopathic misty mesentery, giving a prevalence of 7%. The common indication for CT examination was abdominal pain. There was a slight female predominance (51.3%). 67.5% of all patients were classified as obese and 17.5% as overweight.", "ground_truth": {"decision": "yes", "answer": "The results of the present study show that idiopathic incidental misty mesentery appearance has a significant prevalence. Also, the high body mass index of these patients and the growing evidence of obesity-induced inflammatory changes in adipose tissue are suggestive of an association between obesity and misty mesentery appearance on CT.", "evidence": ["There were a total of 561 patients in whom misty mesentery appearance was depicted on abdominopelvic CT scans. A total of 80 cases were found to have isolated incidental idiopathic misty mesentery, giving a prevalence of 7%. The common indication for CT examination was abdominal pain. There was a slight female predominance (51.3%). 67.5% of all patients were classified as obese and 17.5% as overweight."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: Misty mesentery appearance is commonly reported in daily practice, usually as a secondary finding of various pathological entities, but sometimes it is encountered as an isolated finding that cannot be attributed to any other disease entity. We aimed to assess the prevalence of cases with incidentally detected idiopathic misty mesentery on computed tomography (CT) and to summarize the pathologies leading to this appearance.\n\nMETHODS: Medical records and initial and follow-up CT features of patients with misty mesentery appearance between January 2011 and January 2013 were analysed. The study included cases with no known cause of misty mesentery according to associated CT findings, clinical history, or biochemical manifestations, and excluded patients with diseases known to cause misty mesentery, lymph nodes greater than a short-axis diameter of 5 mm, discrete mesenteric masses, or bowel wall thickening.\n\nRESULTS: There were a total of 561 patients in whom misty mesentery appearance was depicted on abdominopelvic CT scans. A total of 80 cases were found to have isolated incidental idiopathic misty mesentery, giving a prevalence of 7%. The common indication for CT examination was abdominal pain. There was a slight female predominance (51.3%). 67.5% of all patients were classified as obese and 17.5% as overweight.\n\nBiomedical Question:\nThe Prevalence of Incidentally Detected Idiopathic Misty Mesentery on Multidetector Computed Tomography: Can Obesity Be the Triggering Cause?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"The results of the present study show that idiopathic incidental misty mesentery appearance has a significant prevalence. Also, the high body mass index of these patients and the growing evidence of obesity-induced inflammatory changes in adipose tissue are suggestive of an association between obesity and misty mesentery appearance on CT.\",\n  \"evidence\": [\n    \"There were a total of 561 patients in whom misty mesentery appearance was depicted on abdominopelvic CT scans. A total of 80 cases were found to have isolated incidental idiopathic misty mesentery, giving a prevalence of 7%. The common indication for CT examination was abdominal pain. There was a slight female predominance (51.3%). 67.5% of all patients were classified as obese and 17.5% as overweight.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_10759659", "pmid": "10759659", "task": "evidence_qa", "question": "The nurse cystoscopist: a feasible option?", "context": "OBJECTIVES: To compare the accuracy achieved by a trained urology nurse practitioner (UNP) and consultant urologist in detecting bladder tumours during flexible cystoscopy.\n\nPATIENTS AND METHODS: Eighty-three patients underwent flexible cystoscopy by both the UNP and consultant urologist, each unaware of the other's findings. Before comparing the findings, each declared whether there was tumour or any suspicious lesion requiring biopsy.\n\nRESULTS: Of 83 patients examined by flexible cystoscopy, 26 were found to have a tumour or a suspicious lesion. One tumour was missed by the UNP and one by the urologist; each tumour was minute. Analysis using the chance-corrected proportional agreement (Kappa) was 0.94, indicating very close agreement.", "ground_truth": {"decision": "yes", "answer": "A UNP can be trained to perform cystoscopy and detect suspicious lesions as accurately as can a consultant urologist. Legal and training issues in implementation are important.", "evidence": ["Of 83 patients examined by flexible cystoscopy, 26 were found to have a tumour or a suspicious lesion. One tumour was missed by the UNP and one by the urologist; each tumour was minute. Analysis using the chance-corrected proportional agreement (Kappa) was 0.94, indicating very close agreement."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVES: To compare the accuracy achieved by a trained urology nurse practitioner (UNP) and consultant urologist in detecting bladder tumours during flexible cystoscopy.\n\nPATIENTS AND METHODS: Eighty-three patients underwent flexible cystoscopy by both the UNP and consultant urologist, each unaware of the other's findings. Before comparing the findings, each declared whether there was tumour or any suspicious lesion requiring biopsy.\n\nRESULTS: Of 83 patients examined by flexible cystoscopy, 26 were found to have a tumour or a suspicious lesion. One tumour was missed by the UNP and one by the urologist; each tumour was minute. Analysis using the chance-corrected proportional agreement (Kappa) was 0.94, indicating very close agreement.\n\nBiomedical Question:\nThe nurse cystoscopist: a feasible option?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"A UNP can be trained to perform cystoscopy and detect suspicious lesions as accurately as can a consultant urologist. Legal and training issues in implementation are important.\",\n  \"evidence\": [\n    \"Of 83 patients examined by flexible cystoscopy, 26 were found to have a tumour or a suspicious lesion. One tumour was missed by the UNP and one by the urologist; each tumour was minute. Analysis using the chance-corrected proportional agreement (Kappa) was 0.94, indicating very close agreement.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_27909738", "pmid": "27909738", "task": "evidence_qa", "question": "Prostate bed target interfractional motion using RTOG consensus definitions and daily CT on rails : Does target motion differ between superior and inferior portions of the clinical target volume?", "context": "PURPOSE: Using high-quality CT-on-rails imaging, the daily motion of the prostate bed clinical target volume (PB-CTV) based on consensus Radiation Therapy Oncology Group (RTOG) definitions (instead of surgical clips/fiducials) was studied. It was assessed whether PB motion in the superior portion of PB-CTV (SUP-CTV) differed from the inferior PB-CTV (INF-CTV).\n\nPATIENTS AND METHODS: Eight pT2-3bN0-1M0 patients underwent postprostatectomy intensity-modulated radiotherapy, totaling 300 fractions. INF-CTV and SUP-CTV were defined as PB-CTV located inferior and superior to the superior border of the pubic symphysis, respectively. Daily pretreatment CT-on-rails images were compared to the planning CT in the left-right (LR), superoinferior (SI), and anteroposterior (AP) directions. Two parameters were defined: \"total PB-CTV motion\" represented total shifts from skin tattoos to RTOG-defined anatomic areas; \"PB-CTV target motion\" (performed for both SUP-CTV and INF-CTV) represented shifts from bone to RTOG-defined anatomic areas (i. e., subtracting shifts from skin tattoos to bone).\n\nRESULTS: Mean (± standard deviation, SD) total PB-CTV motion was -1.5 (± 6.0), 1.3 (± 4.5), and 3.7 (± 5.7) mm in LR, SI, and AP directions, respectively. Mean (± SD) PB-CTV target motion was 0.2 (±1.4), 0.3 (±2.4), and 0 (±3.1) mm in the LR, SI, and AP directions, respectively. Mean (± SD) INF-CTV target motion was 0.1 (± 2.8), 0.5 (± 2.2), and 0.2 (± 2.5) mm, and SUP-CTV target motion was 0.3 (± 1.8), 0.5 (± 2.3), and 0 (± 5.0) mm in LR, SI, and AP directions, respectively. No statistically significant differences between INF-CTV and SUP-CTV motion were present in any direction.", "ground_truth": {"decision": "no", "answer": "There are no statistically apparent motion differences between SUP-CTV and INF-CTV. Current uniform planning target volume (PTV) margins are adequate to cover both portions of the CTV.", "evidence": ["Mean (± standard deviation, SD) total PB-CTV motion was -1.5 (± 6.0), 1.3 (± 4.5), and 3.7 (± 5.7) mm in LR, SI, and AP directions, respectively. Mean (± SD) PB-CTV target motion was 0.2 (±1.4), 0.3 (±2.4), and 0 (±3.1) mm in the LR, SI, and AP directions, respectively. Mean (± SD) INF-CTV target motion was 0.1 (± 2.8), 0.5 (± 2.2), and 0.2 (± 2.5) mm, and SUP-CTV target motion was 0.3 (± 1.8), 0.5 (± 2.3), and 0 (± 5.0) mm in LR, SI, and AP directions, respectively. No statistically significant differences between INF-CTV and SUP-CTV motion were present in any direction."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: Using high-quality CT-on-rails imaging, the daily motion of the prostate bed clinical target volume (PB-CTV) based on consensus Radiation Therapy Oncology Group (RTOG) definitions (instead of surgical clips/fiducials) was studied. It was assessed whether PB motion in the superior portion of PB-CTV (SUP-CTV) differed from the inferior PB-CTV (INF-CTV).\n\nPATIENTS AND METHODS: Eight pT2-3bN0-1M0 patients underwent postprostatectomy intensity-modulated radiotherapy, totaling 300 fractions. INF-CTV and SUP-CTV were defined as PB-CTV located inferior and superior to the superior border of the pubic symphysis, respectively. Daily pretreatment CT-on-rails images were compared to the planning CT in the left-right (LR), superoinferior (SI), and anteroposterior (AP) directions. Two parameters were defined: \"total PB-CTV motion\" represented total shifts from skin tattoos to RTOG-defined anatomic areas; \"PB-CTV target motion\" (performed for both SUP-CTV and INF-CTV) represented shifts from bone to RTOG-defined anatomic areas (i. e., subtracting shifts from skin tattoos to bone).\n\nRESULTS: Mean (± standard deviation, SD) total PB-CTV motion was -1.5 (± 6.0), 1.3 (± 4.5), and 3.7 (± 5.7) mm in LR, SI, and AP directions, respectively. Mean (± SD) PB-CTV target motion was 0.2 (±1.4), 0.3 (±2.4), and 0 (±3.1) mm in the LR, SI, and AP directions, respectively. Mean (± SD) INF-CTV target motion was 0.1 (± 2.8), 0.5 (± 2.2), and 0.2 (± 2.5) mm, and SUP-CTV target motion was 0.3 (± 1.8), 0.5 (± 2.3), and 0 (± 5.0) mm in LR, SI, and AP directions, respectively. No statistically significant differences between INF-CTV and SUP-CTV motion were present in any direction.\n\nBiomedical Question:\nProstate bed target interfractional motion using RTOG consensus definitions and daily CT on rails : Does target motion differ between superior and inferior portions of the clinical target volume?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"There are no statistically apparent motion differences between SUP-CTV and INF-CTV. Current uniform planning target volume (PTV) margins are adequate to cover both portions of the CTV.\",\n  \"evidence\": [\n    \"Mean (± standard deviation, SD) total PB-CTV motion was -1.5 (± 6.0), 1.3 (± 4.5), and 3.7 (± 5.7) mm in LR, SI, and AP directions, respectively. Mean (± SD) PB-CTV target motion was 0.2 (±1.4), 0.3 (±2.4), and 0 (±3.1) mm in the LR, SI, and AP directions, respectively. Mean (± SD) INF-CTV target motion was 0.1 (± 2.8), 0.5 (± 2.2), and 0.2 (± 2.5) mm, and SUP-CTV target motion was 0.3 (± 1.8), 0.5 (± 2.3), and 0 (± 5.0) mm in LR, SI, and AP directions, respectively. No statistically significant differences between INF-CTV and SUP-CTV motion were present in any direction.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_10798511", "pmid": "10798511", "task": "evidence_qa", "question": "Blunt trauma in intoxicated patients: is computed tomography of the abdomen always necessary?", "context": "BACKGROUND: Physical examination to detect abdominal injuries has been considered unreliable in alcohol-intoxicated trauma patients. Computed tomography (CT) plays the primary role in these abdominal evaluations.\n\nMETHODS: We reviewed medical records of all blunt trauma patients admitted to our trauma service from January 1, 1992, to March 31, 1998. Study patients had a blood alcohol level>or =80 mg/dL, Glasgow Coma Scale (GCS) score of 15, and unremarkable abdominal examination.\n\nRESULTS: Of 324 patients studied, 317 (98%) had CT scans negative for abdominal injury. Abdominal injuries were identified in 7 patients (2%), with only 2 (0.6%) requiring abdominal exploration. A significant association was found between major chest injury and abdominal injury.", "ground_truth": {"decision": "no", "answer": "The incidence of abdominal injury in intoxicated, hemodynamically stable, blunt trauma patients with a normal abdominal examination and normal mentation is low. Physical examination and attention to clinical risk factors allow accurate abdominal evaluation without CT.", "evidence": ["Of 324 patients studied, 317 (98%) had CT scans negative for abdominal injury. Abdominal injuries were identified in 7 patients (2%), with only 2 (0.6%) requiring abdominal exploration. A significant association was found between major chest injury and abdominal injury."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Physical examination to detect abdominal injuries has been considered unreliable in alcohol-intoxicated trauma patients. Computed tomography (CT) plays the primary role in these abdominal evaluations.\n\nMETHODS: We reviewed medical records of all blunt trauma patients admitted to our trauma service from January 1, 1992, to March 31, 1998. Study patients had a blood alcohol level>or =80 mg/dL, Glasgow Coma Scale (GCS) score of 15, and unremarkable abdominal examination.\n\nRESULTS: Of 324 patients studied, 317 (98%) had CT scans negative for abdominal injury. Abdominal injuries were identified in 7 patients (2%), with only 2 (0.6%) requiring abdominal exploration. A significant association was found between major chest injury and abdominal injury.\n\nBiomedical Question:\nBlunt trauma in intoxicated patients: is computed tomography of the abdomen always necessary?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"The incidence of abdominal injury in intoxicated, hemodynamically stable, blunt trauma patients with a normal abdominal examination and normal mentation is low. Physical examination and attention to clinical risk factors allow accurate abdominal evaluation without CT.\",\n  \"evidence\": [\n    \"Of 324 patients studied, 317 (98%) had CT scans negative for abdominal injury. Abdominal injuries were identified in 7 patients (2%), with only 2 (0.6%) requiring abdominal exploration. A significant association was found between major chest injury and abdominal injury.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_11943048", "pmid": "11943048", "task": "evidence_qa", "question": "Does receipt of hospice care in nursing homes improve the management of pain at the end of life?", "context": "OBJECTIVES: To compare analgesic management of daily pain for dying nursing home residents enrolled and not enrolled in Medicare hospice.\n\nDESIGN: Retrospective, comparative cohort study.\n\nSETTING: Over 800 nursing homes in Kansas, Maine, Mississippi, New York, and South Dakota.\n\nPARTICIPANTS: A subset of residents with daily pain near the end of life taken from a matched cohort of hospice (2,644) and nonhospice (7,929) nursing home residents who had at least two resident assessments (Minimum Data Sets (MDSs)) completed, their last between 1992 and 1996, and who died before April 1997. The daily pain subset consisted of 709 hospice and 1,326 nonhospice residents.\n\nMEASUREMENTS: Detailed drug use data contained on the last MDS before death were used to examine analgesic management of daily pain. Guidelines from the American Medical Directors Association (AMDA) were used to identify analgesics not recommended for use in managing chronic pain in long-term care settings. The study outcome, regular treatment of daily pain, examined whether patients received any analgesic, other than those not recommended by AMDA, at least twice a day for each day of documented daily pain (i.e., 7 days before date of last MDS).\n\nRESULTS: Fifteen percent of hospice residents and 23% of nonhospice residents in daily pain received no analgesics (odds ratio (OR) = 0.57, 95% confidence interval (CI) = 0.45-0.74). A lower proportion of hospice residents (21%) than of nonhospice residents (29%) received analgesics not recommended by AMDA (OR = 0.65, 95% CI =0.52-0.80). Overall, acetaminophen (not in combination with other drugs) was used most frequently for nonhospice residents (25% of 1,673 prescriptions), whereas morphine derivatives were used most frequently for hospice residents (30% of 1,058 prescriptions). Fifty-one percent of hospice residents and 33% of nonhospice residents received regular treatment for daily pain. Controlling for clinical confounders, hospice residents were twice as likely as nonhospice residents to receive regular treatment for daily pain (adjusted odds ratio = 2.08, 95% CI = 1.68-2.56).", "ground_truth": {"decision": "yes", "answer": "Findings suggest that analgesic management of daily pain is better for nursing home residents enrolled in hospice than for those not enrolled in hospice.The prescribing practices portrayed by this study reveal that many dying nursing home residents in daily pain are receiving no analgesic treatment or are receiving analgesic treatment inconsistent with AMDA and other pain management guidelines. Improving the analgesic management of pain in nursing homes is essential if high-quality end-of-life care in nursing homes is to be achieved.", "evidence": ["Fifteen percent of hospice residents and 23% of nonhospice residents in daily pain received no analgesics (odds ratio (OR) = 0.57, 95% confidence interval (CI) = 0.45-0.74). A lower proportion of hospice residents (21%) than of nonhospice residents (29%) received analgesics not recommended by AMDA (OR = 0.65, 95% CI =0.52-0.80). Overall, acetaminophen (not in combination with other drugs) was used most frequently for nonhospice residents (25% of 1,673 prescriptions), whereas morphine derivatives were used most frequently for hospice residents (30% of 1,058 prescriptions). Fifty-one percent of hospice residents and 33% of nonhospice residents received regular treatment for daily pain. Controlling for clinical confounders, hospice residents were twice as likely as nonhospice residents to receive regular treatment for daily pain (adjusted odds ratio = 2.08, 95% CI = 1.68-2.56)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVES: To compare analgesic management of daily pain for dying nursing home residents enrolled and not enrolled in Medicare hospice.\n\nDESIGN: Retrospective, comparative cohort study.\n\nSETTING: Over 800 nursing homes in Kansas, Maine, Mississippi, New York, and South Dakota.\n\nPARTICIPANTS: A subset of residents with daily pain near the end of life taken from a matched cohort of hospice (2,644) and nonhospice (7,929) nursing home residents who had at least two resident assessments (Minimum Data Sets (MDSs)) completed, their last between 1992 and 1996, and who died before April 1997. The daily pain subset consisted of 709 hospice and 1,326 nonhospice residents.\n\nMEASUREMENTS: Detailed drug use data contained on the last MDS before death were used to examine analgesic management of daily pain. Guidelines from the American Medical Directors Association (AMDA) were used to identify analgesics not recommended for use in managing chronic pain in long-term care settings. The study outcome, regular treatment of daily pain, examined whether patients received any analgesic, other than those not recommended by AMDA, at least twice a day for each day of documented daily pain (i.e., 7 days before date of last MDS).\n\nRESULTS: Fifteen percent of hospice residents and 23% of nonhospice residents in daily pain received no analgesics (odds ratio (OR) = 0.57, 95% confidence interval (CI) = 0.45-0.74). A lower proportion of hospice residents (21%) than of nonhospice residents (29%) received analgesics not recommended by AMDA (OR = 0.65, 95% CI =0.52-0.80). Overall, acetaminophen (not in combination with other drugs) was used most frequently for nonhospice residents (25% of 1,673 prescriptions), whereas morphine derivatives were used most frequently for hospice residents (30% of 1,058 prescriptions). Fifty-one percent of hospice residents and 33% of nonhospice residents received regular treatment for daily pain. Controlling for clinical confounders, hospice residents were twice as likely as nonhospice residents to receive regular treatment for daily pain (adjusted odds ratio = 2.08, 95% CI = 1.68-2.56).\n\nBiomedical Question:\nDoes receipt of hospice care in nursing homes improve the management of pain at the end of life?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Findings suggest that analgesic management of daily pain is better for nursing home residents enrolled in hospice than for those not enrolled in hospice.The prescribing practices portrayed by this study reveal that many dying nursing home residents in daily pain are receiving no analgesic treatment or are receiving analgesic treatment inconsistent with AMDA and other pain management guidelines. Improving the analgesic management of pain in nursing homes is essential if high-quality end-of-life care in nursing homes is to be achieved.\",\n  \"evidence\": [\n    \"Fifteen percent of hospice residents and 23% of nonhospice residents in daily pain received no analgesics (odds ratio (OR) = 0.57, 95% confidence interval (CI) = 0.45-0.74). A lower proportion of hospice residents (21%) than of nonhospice residents (29%) received analgesics not recommended by AMDA (OR = 0.65, 95% CI =0.52-0.80). Overall, acetaminophen (not in combination with other drugs) was used most frequently for nonhospice residents (25% of 1,673 prescriptions), whereas morphine derivatives were used most frequently for hospice residents (30% of 1,058 prescriptions). Fifty-one percent of hospice residents and 33% of nonhospice residents received regular treatment for daily pain. Controlling for clinical confounders, hospice residents were twice as likely as nonhospice residents to receive regular treatment for daily pain (adjusted odds ratio = 2.08, 95% CI = 1.68-2.56).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_27989969", "pmid": "27989969", "task": "evidence_qa", "question": "Does the Simultaneous Use of a Neuroendoscope Influence the Incidence of Ventriculoperitoneal Shunt Infection?", "context": "BACKGROUND: The relationship between the use of an endoscope during ventriculoperitoneal shunt (VPS) procedures and infection remains poorly defined. In this study, we sought to analyze whether the simultaneous use of an endoscope could in fact increase the infection rate associated with VPS procedures.\n\nMETHODS: This study included 438 VPS procedures, 49 in which an endoscope was used (11.2%) and 389 in which an endoscope was not used (88.8%). The infection rates in these 2 main groups were calculated and compared. Subsequently, 4 new groups were created, composed of patients with a shunt inserted for the first time (groups 1A and 1B) and patients with a shunt reviewed or inserted for a second time (groups 2A and 2B). Groups 1A and 2A comprised patients in whom an endoscope was used simultaneously with VPS surgery, and groups 1B and 2B comprised patients in whom an endoscope was not used. These groups were compared to determine the infection rate.\n\nRESULTS: The overall infection rate was 18.5%, including 22.4% in the groups in which an endoscope was used and 18% in those in which an endoscope was not used (P = 0.449). Groups 1A and 1B and groups 2A and 2B were matched for possible intervening risk factors. The infection rate was 28.6% in group 1A and 16.2% in group 1B (P = 0.27), and 20% in group 2A and 19.8% in group 2B (P = 0.977).", "ground_truth": {"decision": "no", "answer": "In the present study, the use of an endoscope during VPS procedures did not increase the risk of surgical infection.", "evidence": ["The overall infection rate was 18.5%, including 22.4% in the groups in which an endoscope was used and 18% in those in which an endoscope was not used (P = 0.449). Groups 1A and 1B and groups 2A and 2B were matched for possible intervening risk factors. The infection rate was 28.6% in group 1A and 16.2% in group 1B (P = 0.27), and 20% in group 2A and 19.8% in group 2B (P = 0.977)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: The relationship between the use of an endoscope during ventriculoperitoneal shunt (VPS) procedures and infection remains poorly defined. In this study, we sought to analyze whether the simultaneous use of an endoscope could in fact increase the infection rate associated with VPS procedures.\n\nMETHODS: This study included 438 VPS procedures, 49 in which an endoscope was used (11.2%) and 389 in which an endoscope was not used (88.8%). The infection rates in these 2 main groups were calculated and compared. Subsequently, 4 new groups were created, composed of patients with a shunt inserted for the first time (groups 1A and 1B) and patients with a shunt reviewed or inserted for a second time (groups 2A and 2B). Groups 1A and 2A comprised patients in whom an endoscope was used simultaneously with VPS surgery, and groups 1B and 2B comprised patients in whom an endoscope was not used. These groups were compared to determine the infection rate.\n\nRESULTS: The overall infection rate was 18.5%, including 22.4% in the groups in which an endoscope was used and 18% in those in which an endoscope was not used (P = 0.449). Groups 1A and 1B and groups 2A and 2B were matched for possible intervening risk factors. The infection rate was 28.6% in group 1A and 16.2% in group 1B (P = 0.27), and 20% in group 2A and 19.8% in group 2B (P = 0.977).\n\nBiomedical Question:\nDoes the Simultaneous Use of a Neuroendoscope Influence the Incidence of Ventriculoperitoneal Shunt Infection?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"In the present study, the use of an endoscope during VPS procedures did not increase the risk of surgical infection.\",\n  \"evidence\": [\n    \"The overall infection rate was 18.5%, including 22.4% in the groups in which an endoscope was used and 18% in those in which an endoscope was not used (P = 0.449). Groups 1A and 1B and groups 2A and 2B were matched for possible intervening risk factors. The infection rate was 28.6% in group 1A and 16.2% in group 1B (P = 0.27), and 20% in group 2A and 19.8% in group 2B (P = 0.977).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_24799031", "pmid": "24799031", "task": "evidence_qa", "question": "Is diffusion-weighted imaging a significant indicator of the development of vascularization in hypovascular hepatocellular lesions?", "context": "OBJECTIVE: The objective was to evaluate the efficacy of diffusion-weighted imaging (DWI) in predicting the development of vascularization in hypovascular hepatocellular lesions (HHLs).\n\nMATERIALS AND METHODS: Forty-two HHLs that were diagnosed by computed tomographic (CT) arteriography were evaluated retrospectively. The lesion on DWI was classified as isointense, hypointense, or hyperintense. Follow-up studies that included intravenous dynamic CT or magnetic resonance imaging were performed.\n\nRESULTS: The 730-day cumulative developments of vascularization in hypointense, isointense, and hyperintense lesions were 17%, 30%, and 40%, respectively. The differences among these developments were not statistically significant.", "ground_truth": {"decision": "no", "answer": "The signal intensity on DWI showed no significant difference in the development of vascularization.", "evidence": ["The 730-day cumulative developments of vascularization in hypointense, isointense, and hyperintense lesions were 17%, 30%, and 40%, respectively. The differences among these developments were not statistically significant."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: The objective was to evaluate the efficacy of diffusion-weighted imaging (DWI) in predicting the development of vascularization in hypovascular hepatocellular lesions (HHLs).\n\nMATERIALS AND METHODS: Forty-two HHLs that were diagnosed by computed tomographic (CT) arteriography were evaluated retrospectively. The lesion on DWI was classified as isointense, hypointense, or hyperintense. Follow-up studies that included intravenous dynamic CT or magnetic resonance imaging were performed.\n\nRESULTS: The 730-day cumulative developments of vascularization in hypointense, isointense, and hyperintense lesions were 17%, 30%, and 40%, respectively. The differences among these developments were not statistically significant.\n\nBiomedical Question:\nIs diffusion-weighted imaging a significant indicator of the development of vascularization in hypovascular hepatocellular lesions?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"The signal intensity on DWI showed no significant difference in the development of vascularization.\",\n  \"evidence\": [\n    \"The 730-day cumulative developments of vascularization in hypointense, isointense, and hyperintense lesions were 17%, 30%, and 40%, respectively. The differences among these developments were not statistically significant.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_25940336", "pmid": "25940336", "task": "evidence_qa", "question": "Does Residency Selection Criteria Predict Performance in Orthopaedic Surgery Residency?", "context": "BACKGROUND: More than 1000 candidates applied for orthopaedic residency positions in 2014, and the competition is intense; approximately one-third of the candidates failed to secure a position in the match. However, the criteria used in the selection process often are subjective and studies have differed in terms of which criteria predict either objective measures or subjective ratings of resident performance by faculty.QUESTIONS/\n\nPURPOSES: Do preresidency selection factors serve as predictors of success in residency? Specifically, we asked which preresidency selection factors are associated or correlated with (1) objective measures of resident knowledge and performance; and (2) subjective ratings by faculty.\n\nMETHODS: Charts of 60 orthopaedic residents from our institution were reviewed. Preresidency selection criteria examined included United States Medical Licensing Examination (USMLE) Step 1 and Step 2 scores, Medical College Admission Test (MCAT) scores, number of clinical clerkship honors, number of letters of recommendation, number of away rotations, Alpha Omega Alpha (AOA) honor medical society membership, fourth-year subinternship at our institution, and number of publications. Resident performance was assessed using objective measures including American Board of Orthopaedic Surgery (ABOS) Part I scores and Orthopaedics In-Training Exam (OITE) scores and subjective ratings by faculty including global evaluation scores and faculty rankings of residents. We tested associations between preresidency criteria and the subsequent objective and subjective metrics using linear correlation analysis and Mann-Whitney tests when appropriate.\n\nRESULTS: Objective measures of resident performance namely, ABOS Part I scores, had a moderate linear correlation with the USMLE Step 2 scores (r = 0.55, p<0.001) and number of clinical honors received in medical school (r = 0.45, p<0.001). OITE scores had a weak linear correlation with the number of clinical honors (r = 0.35, p = 0.009) and USMLE Step 2 scores (r = 0.29, p = 0.02). With regards to subjective outcomes, AOA membership was associated with higher scores on the global evaluation (p = 0.005). AOA membership also correlated with higher global evaluation scores (r = 0.60, p = 0.005) with the strongest correlation existing between AOA membership and the \"interpersonal and communication skills\" subsection of the global evaluations.", "ground_truth": {"decision": "yes", "answer": "We found that USMLE Step 2, number of honors in medical school clerkships, and AOA membership demonstrated the strongest correlations with resident performance. Our goal in analyzing these data was to provide residency programs at large a sense of which criteria may be \"high yield\" in ranking applicants by analyzing data from within our own pool of residents. Similar studies across a broader scope of programs are warranted to confirm applicability of our findings. The continually emerging complexities of the field of orthopaedic surgery lend increasing importance to future work on the appropriate selection and training of orthopaedic residents.", "evidence": ["Objective measures of resident performance namely, ABOS Part I scores, had a moderate linear correlation with the USMLE Step 2 scores (r = 0.55, p<0.001) and number of clinical honors received in medical school (r = 0.45, p<0.001). OITE scores had a weak linear correlation with the number of clinical honors (r = 0.35, p = 0.009) and USMLE Step 2 scores (r = 0.29, p = 0.02). With regards to subjective outcomes, AOA membership was associated with higher scores on the global evaluation (p = 0.005). AOA membership also correlated with higher global evaluation scores (r = 0.60, p = 0.005) with the strongest correlation existing between AOA membership and the \"interpersonal and communication skills\" subsection of the global evaluations."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: More than 1000 candidates applied for orthopaedic residency positions in 2014, and the competition is intense; approximately one-third of the candidates failed to secure a position in the match. However, the criteria used in the selection process often are subjective and studies have differed in terms of which criteria predict either objective measures or subjective ratings of resident performance by faculty.QUESTIONS/\n\nPURPOSES: Do preresidency selection factors serve as predictors of success in residency? Specifically, we asked which preresidency selection factors are associated or correlated with (1) objective measures of resident knowledge and performance; and (2) subjective ratings by faculty.\n\nMETHODS: Charts of 60 orthopaedic residents from our institution were reviewed. Preresidency selection criteria examined included United States Medical Licensing Examination (USMLE) Step 1 and Step 2 scores, Medical College Admission Test (MCAT) scores, number of clinical clerkship honors, number of letters of recommendation, number of away rotations, Alpha Omega Alpha (AOA) honor medical society membership, fourth-year subinternship at our institution, and number of publications. Resident performance was assessed using objective measures including American Board of Orthopaedic Surgery (ABOS) Part I scores and Orthopaedics In-Training Exam (OITE) scores and subjective ratings by faculty including global evaluation scores and faculty rankings of residents. We tested associations between preresidency criteria and the subsequent objective and subjective metrics using linear correlation analysis and Mann-Whitney tests when appropriate.\n\nRESULTS: Objective measures of resident performance namely, ABOS Part I scores, had a moderate linear correlation with the USMLE Step 2 scores (r = 0.55, p<0.001) and number of clinical honors received in medical school (r = 0.45, p<0.001). OITE scores had a weak linear correlation with the number of clinical honors (r = 0.35, p = 0.009) and USMLE Step 2 scores (r = 0.29, p = 0.02). With regards to subjective outcomes, AOA membership was associated with higher scores on the global evaluation (p = 0.005). AOA membership also correlated with higher global evaluation scores (r = 0.60, p = 0.005) with the strongest correlation existing between AOA membership and the \"interpersonal and communication skills\" subsection of the global evaluations.\n\nBiomedical Question:\nDoes Residency Selection Criteria Predict Performance in Orthopaedic Surgery Residency?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"We found that USMLE Step 2, number of honors in medical school clerkships, and AOA membership demonstrated the strongest correlations with resident performance. Our goal in analyzing these data was to provide residency programs at large a sense of which criteria may be \\\"high yield\\\" in ranking applicants by analyzing data from within our own pool of residents. Similar studies across a broader scope of programs are warranted to confirm applicability of our findings. The continually emerging complexities of the field of orthopaedic surgery lend increasing importance to future work on the appropriate selection and training of orthopaedic residents.\",\n  \"evidence\": [\n    \"Objective measures of resident performance namely, ABOS Part I scores, had a moderate linear correlation with the USMLE Step 2 scores (r = 0.55, p<0.001) and number of clinical honors received in medical school (r = 0.45, p<0.001). OITE scores had a weak linear correlation with the number of clinical honors (r = 0.35, p = 0.009) and USMLE Step 2 scores (r = 0.29, p = 0.02). With regards to subjective outcomes, AOA membership was associated with higher scores on the global evaluation (p = 0.005). AOA membership also correlated with higher global evaluation scores (r = 0.60, p = 0.005) with the strongest correlation existing between AOA membership and the \\\"interpersonal and communication skills\\\" subsection of the global evaluations.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_11867487", "pmid": "11867487", "task": "evidence_qa", "question": "Does rugby headgear prevent concussion?", "context": "OBJECTIVES: To examine the attitudes of players and coaches to the use of protective headgear, particularly with respect to the prevention of concussion.\n\nMETHODS: A questionnaire designed to assess attitudes to headgear was administered to 63 players from four different Canadian teams, each representing a different level of play (high school, university, community club, national). In addition, coaches from all four levels were questioned about team policies and their personal opinions about the use of headgear to prevent concussion.\n\nRESULTS: Although the players tended to believe that the headgear could prevent concussion (62%), the coaches were less convinced (33%). Despite the players' belief that headgear offers protection against concussion, only a minority reported wearing headgear (27%) and few (24%) felt that its use should be made mandatory. Common reasons for not wearing headgear were \"its use is not mandatory\", \"it is uncomfortable\", and \"it costs too much\".", "ground_truth": {"decision": "maybe", "answer": "Although most players in the study believe that rugby headgear may prevent concussion, only a minority reported wearing it. Coaches tended to be less convinced than the players that rugby headgear can prevent concussion.", "evidence": ["Although the players tended to believe that the headgear could prevent concussion (62%), the coaches were less convinced (33%). Despite the players' belief that headgear offers protection against concussion, only a minority reported wearing headgear (27%) and few (24%) felt that its use should be made mandatory. Common reasons for not wearing headgear were \"its use is not mandatory\", \"it is uncomfortable\", and \"it costs too much\"."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVES: To examine the attitudes of players and coaches to the use of protective headgear, particularly with respect to the prevention of concussion.\n\nMETHODS: A questionnaire designed to assess attitudes to headgear was administered to 63 players from four different Canadian teams, each representing a different level of play (high school, university, community club, national). In addition, coaches from all four levels were questioned about team policies and their personal opinions about the use of headgear to prevent concussion.\n\nRESULTS: Although the players tended to believe that the headgear could prevent concussion (62%), the coaches were less convinced (33%). Despite the players' belief that headgear offers protection against concussion, only a minority reported wearing headgear (27%) and few (24%) felt that its use should be made mandatory. Common reasons for not wearing headgear were \"its use is not mandatory\", \"it is uncomfortable\", and \"it costs too much\".\n\nBiomedical Question:\nDoes rugby headgear prevent concussion?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"Although most players in the study believe that rugby headgear may prevent concussion, only a minority reported wearing it. Coaches tended to be less convinced than the players that rugby headgear can prevent concussion.\",\n  \"evidence\": [\n    \"Although the players tended to believe that the headgear could prevent concussion (62%), the coaches were less convinced (33%). Despite the players' belief that headgear offers protection against concussion, only a minority reported wearing headgear (27%) and few (24%) felt that its use should be made mandatory. Common reasons for not wearing headgear were \\\"its use is not mandatory\\\", \\\"it is uncomfortable\\\", and \\\"it costs too much\\\".\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_15466981", "pmid": "15466981", "task": "evidence_qa", "question": "Prostate-specific antigen and free prostate-specific antigen in the early detection of prostate cancer: do combination tests improve detection?", "context": "BACKGROUND: The combined use of free and total prostate-specific antigen (PSA) in early detection of prostate cancer has been controversial. This article systematically evaluates the discriminating capacity of a large number of combination tests.\n\nMETHODS: Free and total PSA were analyzed in stored serum samples taken prior to diagnosis in 429 cases and 1,640 controls from the Physicians' Health Study. We used a classification algorithm called logic regression to search for clinically useful tests combining total and percent free PSA and receiver operating characteristic analysis and compared these tests with those based on total and complexed PSA. Data were divided into training and test subsets. For robustness, we considered 35 test-train splits of the original data and computed receiver operating characteristic curves for each test data set.\n\nRESULTS: The average area under the receiver operating characteristic curve across test data sets was 0.74 for total PSA and 0.76 for the combination tests. Combination tests with higher sensitivity and specificity than PSA>4.0 ng/mL were identified 29 out of 35 times. All these tests extended the PSA reflex range to below 4.0 ng/mL. Receiver operating characteristic curve analysis indicated that the overall diagnostic performance as expressed by the area under the curve did not differ significantly for the different tests.", "ground_truth": {"decision": "yes", "answer": "Tests combining total and percent free PSA show modest overall improvements over total PSA. However, utilization of percent free PSA below a PSA threshold of 4 ng/mL could translate into a practically important reduction in unnecessary biopsies without sacrificing cancers detected.", "evidence": ["The average area under the receiver operating characteristic curve across test data sets was 0.74 for total PSA and 0.76 for the combination tests. Combination tests with higher sensitivity and specificity than PSA>4.0 ng/mL were identified 29 out of 35 times. All these tests extended the PSA reflex range to below 4.0 ng/mL. Receiver operating characteristic curve analysis indicated that the overall diagnostic performance as expressed by the area under the curve did not differ significantly for the different tests."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: The combined use of free and total prostate-specific antigen (PSA) in early detection of prostate cancer has been controversial. This article systematically evaluates the discriminating capacity of a large number of combination tests.\n\nMETHODS: Free and total PSA were analyzed in stored serum samples taken prior to diagnosis in 429 cases and 1,640 controls from the Physicians' Health Study. We used a classification algorithm called logic regression to search for clinically useful tests combining total and percent free PSA and receiver operating characteristic analysis and compared these tests with those based on total and complexed PSA. Data were divided into training and test subsets. For robustness, we considered 35 test-train splits of the original data and computed receiver operating characteristic curves for each test data set.\n\nRESULTS: The average area under the receiver operating characteristic curve across test data sets was 0.74 for total PSA and 0.76 for the combination tests. Combination tests with higher sensitivity and specificity than PSA>4.0 ng/mL were identified 29 out of 35 times. All these tests extended the PSA reflex range to below 4.0 ng/mL. Receiver operating characteristic curve analysis indicated that the overall diagnostic performance as expressed by the area under the curve did not differ significantly for the different tests.\n\nBiomedical Question:\nProstate-specific antigen and free prostate-specific antigen in the early detection of prostate cancer: do combination tests improve detection?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Tests combining total and percent free PSA show modest overall improvements over total PSA. However, utilization of percent free PSA below a PSA threshold of 4 ng/mL could translate into a practically important reduction in unnecessary biopsies without sacrificing cancers detected.\",\n  \"evidence\": [\n    \"The average area under the receiver operating characteristic curve across test data sets was 0.74 for total PSA and 0.76 for the combination tests. Combination tests with higher sensitivity and specificity than PSA>4.0 ng/mL were identified 29 out of 35 times. All these tests extended the PSA reflex range to below 4.0 ng/mL. Receiver operating characteristic curve analysis indicated that the overall diagnostic performance as expressed by the area under the curve did not differ significantly for the different tests.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_19156007", "pmid": "19156007", "task": "evidence_qa", "question": "Can clinicians use the PHQ-9 to assess depression in people with vision loss?", "context": "PURPOSE: To investigate whether the Patient Health Questionnaire-9 (PHQ-9) possesses the essential psychometric characteristics to measure depressive symptoms in people with visual impairment.\n\nMETHODS: The PHQ-9 scale was completed by 103 participants with low vision. These data were then assessed for fit to the Rasch model.\n\nRESULTS: The participants' mean +/- standard deviation (SD) age was 74.7 +/- 12.2 years. Almost one half of them (n = 46; 44.7%) were considered to have severe vision impairment (presenting visual acuity<6/60 in the better eye). Disordered thresholds were evident initially. Collapsing the two middle categories produced ordered thresholds and fit to the Rasch model (chi = 10.1; degrees of freedom = 9; p = 0.34). The mean (SD) items and persons Fit Residual values were -0.31 (1.12) and -0.25 (0.78), respectively, where optimal fit of data to the Rasch model would have a mean = 0 and SD = 1. Unidimensionality was demonstrated confirming the construct validity of the PHQ-9 and there was no evidence of differential item functioning on a number of factors including visual disability. The person separation reliability value was 0.80 indicating that the PHQ-9 has satisfactory precision. There was a degree of mistargeting as expected in this largely non-clinically depressed sample.", "ground_truth": {"decision": "yes", "answer": "Our findings demonstrate that the PHQ-9, when scaled with Rasch analysis, forms a linear interval measurement of depressive symptoms suitable for use in a vision impaired population.", "evidence": ["The participants' mean +/- standard deviation (SD) age was 74.7 +/- 12.2 years. Almost one half of them (n = 46; 44.7%) were considered to have severe vision impairment (presenting visual acuity<6/60 in the better eye). Disordered thresholds were evident initially. Collapsing the two middle categories produced ordered thresholds and fit to the Rasch model (chi = 10.1; degrees of freedom = 9; p = 0.34). The mean (SD) items and persons Fit Residual values were -0.31 (1.12) and -0.25 (0.78), respectively, where optimal fit of data to the Rasch model would have a mean = 0 and SD = 1. Unidimensionality was demonstrated confirming the construct validity of the PHQ-9 and there was no evidence of differential item functioning on a number of factors including visual disability. The person separation reliability value was 0.80 indicating that the PHQ-9 has satisfactory precision. There was a degree of mistargeting as expected in this largely non-clinically depressed sample."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: To investigate whether the Patient Health Questionnaire-9 (PHQ-9) possesses the essential psychometric characteristics to measure depressive symptoms in people with visual impairment.\n\nMETHODS: The PHQ-9 scale was completed by 103 participants with low vision. These data were then assessed for fit to the Rasch model.\n\nRESULTS: The participants' mean +/- standard deviation (SD) age was 74.7 +/- 12.2 years. Almost one half of them (n = 46; 44.7%) were considered to have severe vision impairment (presenting visual acuity<6/60 in the better eye). Disordered thresholds were evident initially. Collapsing the two middle categories produced ordered thresholds and fit to the Rasch model (chi = 10.1; degrees of freedom = 9; p = 0.34). The mean (SD) items and persons Fit Residual values were -0.31 (1.12) and -0.25 (0.78), respectively, where optimal fit of data to the Rasch model would have a mean = 0 and SD = 1. Unidimensionality was demonstrated confirming the construct validity of the PHQ-9 and there was no evidence of differential item functioning on a number of factors including visual disability. The person separation reliability value was 0.80 indicating that the PHQ-9 has satisfactory precision. There was a degree of mistargeting as expected in this largely non-clinically depressed sample.\n\nBiomedical Question:\nCan clinicians use the PHQ-9 to assess depression in people with vision loss?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Our findings demonstrate that the PHQ-9, when scaled with Rasch analysis, forms a linear interval measurement of depressive symptoms suitable for use in a vision impaired population.\",\n  \"evidence\": [\n    \"The participants' mean +/- standard deviation (SD) age was 74.7 +/- 12.2 years. Almost one half of them (n = 46; 44.7%) were considered to have severe vision impairment (presenting visual acuity<6/60 in the better eye). Disordered thresholds were evident initially. Collapsing the two middle categories produced ordered thresholds and fit to the Rasch model (chi = 10.1; degrees of freedom = 9; p = 0.34). The mean (SD) items and persons Fit Residual values were -0.31 (1.12) and -0.25 (0.78), respectively, where optimal fit of data to the Rasch model would have a mean = 0 and SD = 1. Unidimensionality was demonstrated confirming the construct validity of the PHQ-9 and there was no evidence of differential item functioning on a number of factors including visual disability. The person separation reliability value was 0.80 indicating that the PHQ-9 has satisfactory precision. There was a degree of mistargeting as expected in this largely non-clinically depressed sample.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_18319270", "pmid": "18319270", "task": "evidence_qa", "question": "Does confined placental mosaicism account for adverse perinatal outcomes in IVF pregnancies?", "context": "BACKGROUND: IVF singletons have poorer perinatal outcomes than singletons from spontaneous conceptions. This may be due to the influence of ovarian stimulation on the chromosomal constitution of the embryos which could be translated into localized chromosomal anomalies in the placenta. The aim of this study was to compare the incidence of confined placental mosaicism (CPM) in IVF/ICSI pregnancies and spontaneous conceptions.\n\nMETHODS: We conducted a multi-centre retrospective analysis of karyotype results obtained by chorionic villus sampling (CVS), performed due to advanced maternal age (>or=36 years at 18 weeks of gestation), in the Netherlands between 1995 and 2005.\n\nRESULTS: From a total of 322 246 pregnancies, 20 885 CVS results were analysed: 235 in the IVF/ICSI group and 20 650 in the control group. The mean age of women in both groups was 38.4 years (mean difference -0.08, 95% CI -0.35 to 0.18). Data relating to the fetal karyotype were missing in 143 cases in the control group. When taking into account missing data, the incidence of CPM was lower in the IVF-ICSI group than in the control group, 1.3% versus 2.2% (odds ratio 0.59, 95% CI 0.19-1.85), whereas the incidence of fetal chromosomal anomalies was increased 4.3% versus 2.4% (odds ratio 1.81, 95% CI 0.95-3.42). Neither differences were statistically significant.", "ground_truth": {"decision": "no", "answer": "The incidence of CPM is not increased in IVF/ICSI pregnancies compared with spontaneous conceptions. CPM probably does not account for the adverse perinatal outcomes following IVF/ICSI.", "evidence": ["From a total of 322 246 pregnancies, 20 885 CVS results were analysed: 235 in the IVF/ICSI group and 20 650 in the control group. The mean age of women in both groups was 38.4 years (mean difference -0.08, 95% CI -0.35 to 0.18). Data relating to the fetal karyotype were missing in 143 cases in the control group. When taking into account missing data, the incidence of CPM was lower in the IVF-ICSI group than in the control group, 1.3% versus 2.2% (odds ratio 0.59, 95% CI 0.19-1.85), whereas the incidence of fetal chromosomal anomalies was increased 4.3% versus 2.4% (odds ratio 1.81, 95% CI 0.95-3.42). Neither differences were statistically significant."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: IVF singletons have poorer perinatal outcomes than singletons from spontaneous conceptions. This may be due to the influence of ovarian stimulation on the chromosomal constitution of the embryos which could be translated into localized chromosomal anomalies in the placenta. The aim of this study was to compare the incidence of confined placental mosaicism (CPM) in IVF/ICSI pregnancies and spontaneous conceptions.\n\nMETHODS: We conducted a multi-centre retrospective analysis of karyotype results obtained by chorionic villus sampling (CVS), performed due to advanced maternal age (>or=36 years at 18 weeks of gestation), in the Netherlands between 1995 and 2005.\n\nRESULTS: From a total of 322 246 pregnancies, 20 885 CVS results were analysed: 235 in the IVF/ICSI group and 20 650 in the control group. The mean age of women in both groups was 38.4 years (mean difference -0.08, 95% CI -0.35 to 0.18). Data relating to the fetal karyotype were missing in 143 cases in the control group. When taking into account missing data, the incidence of CPM was lower in the IVF-ICSI group than in the control group, 1.3% versus 2.2% (odds ratio 0.59, 95% CI 0.19-1.85), whereas the incidence of fetal chromosomal anomalies was increased 4.3% versus 2.4% (odds ratio 1.81, 95% CI 0.95-3.42). Neither differences were statistically significant.\n\nBiomedical Question:\nDoes confined placental mosaicism account for adverse perinatal outcomes in IVF pregnancies?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"The incidence of CPM is not increased in IVF/ICSI pregnancies compared with spontaneous conceptions. CPM probably does not account for the adverse perinatal outcomes following IVF/ICSI.\",\n  \"evidence\": [\n    \"From a total of 322 246 pregnancies, 20 885 CVS results were analysed: 235 in the IVF/ICSI group and 20 650 in the control group. The mean age of women in both groups was 38.4 years (mean difference -0.08, 95% CI -0.35 to 0.18). Data relating to the fetal karyotype were missing in 143 cases in the control group. When taking into account missing data, the incidence of CPM was lower in the IVF-ICSI group than in the control group, 1.3% versus 2.2% (odds ratio 0.59, 95% CI 0.19-1.85), whereas the incidence of fetal chromosomal anomalies was increased 4.3% versus 2.4% (odds ratio 1.81, 95% CI 0.95-3.42). Neither differences were statistically significant.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_22849512", "pmid": "22849512", "task": "evidence_qa", "question": "Are neighbourhood social capital and availability of sports facilities related to sports participation among Dutch adolescents?", "context": "BACKGROUND: The aim of this study is to explore whether availability of sports facilities, parks, and neighbourhood social capital (NSC) and their interaction are associated with leisure time sports participation among Dutch adolescents.\n\nMETHODS: Cross-sectional analyses were conducted on complete data from the last wave of the YouRAction evaluation trial. Adolescents (n = 852) completed a questionnaire asking for sports participation, perceived NSC and demographics. Ecometric methods were used to aggregate perceived NSC to zip code level. Availability of sports facilities and parks was assessed by means of geographic information systems within the zip-code area and within a 1600 meter buffer. Multilevel logistic regression analyses, with neighborhood and individual as levels, were conducted to examine associations between physical and social environmental factors and leisure time sports participation. Simple slopes analysis was conducted to decompose interaction effects.\n\nRESULTS: NSC was significantly associated with sports participation (OR: 3.51 (95%CI: 1.18;10.41)) after adjustment for potential confounders. Availability of sports facilities and availability of parks were not associated with sports participation. A significant interaction between NSC and density of parks within the neighbourhood area (OR: 1.22 (90%CI: 1.01;1.34)) was found. Decomposition of the interaction term showed that adolescents were most likely to engage in leisure time sports when both availability of parks and NSC were highest.", "ground_truth": {"decision": "maybe", "answer": "The results of this study indicate that leisure time sports participation is associated with levels of NSC, but not with availability of parks or sports facilities. In addition, NSC and availability of parks in the zip code area interacted in such a way that leisure time sports participation is most likely among adolescents living in zip code areas with higher levels of NSC, and higher availability of parks. Hence, availability of parks appears only to be important for leisure time sports participation when NSC is high.", "evidence": ["NSC was significantly associated with sports participation (OR: 3.51 (95%CI: 1.18;10.41)) after adjustment for potential confounders. Availability of sports facilities and availability of parks were not associated with sports participation. A significant interaction between NSC and density of parks within the neighbourhood area (OR: 1.22 (90%CI: 1.01;1.34)) was found. Decomposition of the interaction term showed that adolescents were most likely to engage in leisure time sports when both availability of parks and NSC were highest."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: The aim of this study is to explore whether availability of sports facilities, parks, and neighbourhood social capital (NSC) and their interaction are associated with leisure time sports participation among Dutch adolescents.\n\nMETHODS: Cross-sectional analyses were conducted on complete data from the last wave of the YouRAction evaluation trial. Adolescents (n = 852) completed a questionnaire asking for sports participation, perceived NSC and demographics. Ecometric methods were used to aggregate perceived NSC to zip code level. Availability of sports facilities and parks was assessed by means of geographic information systems within the zip-code area and within a 1600 meter buffer. Multilevel logistic regression analyses, with neighborhood and individual as levels, were conducted to examine associations between physical and social environmental factors and leisure time sports participation. Simple slopes analysis was conducted to decompose interaction effects.\n\nRESULTS: NSC was significantly associated with sports participation (OR: 3.51 (95%CI: 1.18;10.41)) after adjustment for potential confounders. Availability of sports facilities and availability of parks were not associated with sports participation. A significant interaction between NSC and density of parks within the neighbourhood area (OR: 1.22 (90%CI: 1.01;1.34)) was found. Decomposition of the interaction term showed that adolescents were most likely to engage in leisure time sports when both availability of parks and NSC were highest.\n\nBiomedical Question:\nAre neighbourhood social capital and availability of sports facilities related to sports participation among Dutch adolescents?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"The results of this study indicate that leisure time sports participation is associated with levels of NSC, but not with availability of parks or sports facilities. In addition, NSC and availability of parks in the zip code area interacted in such a way that leisure time sports participation is most likely among adolescents living in zip code areas with higher levels of NSC, and higher availability of parks. Hence, availability of parks appears only to be important for leisure time sports participation when NSC is high.\",\n  \"evidence\": [\n    \"NSC was significantly associated with sports participation (OR: 3.51 (95%CI: 1.18;10.41)) after adjustment for potential confounders. Availability of sports facilities and availability of parks were not associated with sports participation. A significant interaction between NSC and density of parks within the neighbourhood area (OR: 1.22 (90%CI: 1.01;1.34)) was found. Decomposition of the interaction term showed that adolescents were most likely to engage in leisure time sports when both availability of parks and NSC were highest.\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_11481599", "pmid": "11481599", "task": "evidence_qa", "question": "Acute respiratory distress syndrome in children with malignancy--can we predict outcome?", "context": "PURPOSE: The purpose of this study was to delineate early respiratory predictors of mortality in children with hemato-oncology malignancy who developed acute respiratory distress syndrome (ARDS).\n\nMATERIALS AND METHODS: We conducted a retrospective chart review of children with malignant and ARDS who needed mechanical ventilation and were admitted to a pediatric intensive care unit from January 1987 to January 1997.\n\nRESULTS: Seventeen children with ARDS and malignancy aged 10.5 +/- 5.1 years were identified. Six of the 17 children (35.3%) survived. Sepsis syndrome was present in 70.6% of all the children. Peak inspiratory pressure, positive end-expiratory pressure (PEEP), and ventilation index values could distinguish outcome by day 3. A significant relationship between respiratory data and outcome related to efficiency of oxygenation, as determined by PaO(2)/FIO(2) and P(A-a)O(2), was present from day 8 after onset of mechanical ventilation.", "ground_truth": {"decision": "yes", "answer": "Peak inspiratory pressure, PEEP, and ventilation index values could distinguish survivors from nonsurvivors by day 3. This may assist in early application of supportive nonconventional therapies in children with malignancy and ARDS.", "evidence": ["Seventeen children with ARDS and malignancy aged 10.5 +/- 5.1 years were identified. Six of the 17 children (35.3%) survived. Sepsis syndrome was present in 70.6% of all the children. Peak inspiratory pressure, positive end-expiratory pressure (PEEP), and ventilation index values could distinguish outcome by day 3. A significant relationship between respiratory data and outcome related to efficiency of oxygenation, as determined by PaO(2)/FIO(2) and P(A-a)O(2), was present from day 8 after onset of mechanical ventilation."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: The purpose of this study was to delineate early respiratory predictors of mortality in children with hemato-oncology malignancy who developed acute respiratory distress syndrome (ARDS).\n\nMATERIALS AND METHODS: We conducted a retrospective chart review of children with malignant and ARDS who needed mechanical ventilation and were admitted to a pediatric intensive care unit from January 1987 to January 1997.\n\nRESULTS: Seventeen children with ARDS and malignancy aged 10.5 +/- 5.1 years were identified. Six of the 17 children (35.3%) survived. Sepsis syndrome was present in 70.6% of all the children. Peak inspiratory pressure, positive end-expiratory pressure (PEEP), and ventilation index values could distinguish outcome by day 3. A significant relationship between respiratory data and outcome related to efficiency of oxygenation, as determined by PaO(2)/FIO(2) and P(A-a)O(2), was present from day 8 after onset of mechanical ventilation.\n\nBiomedical Question:\nAcute respiratory distress syndrome in children with malignancy--can we predict outcome?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Peak inspiratory pressure, PEEP, and ventilation index values could distinguish survivors from nonsurvivors by day 3. This may assist in early application of supportive nonconventional therapies in children with malignancy and ARDS.\",\n  \"evidence\": [\n    \"Seventeen children with ARDS and malignancy aged 10.5 +/- 5.1 years were identified. Six of the 17 children (35.3%) survived. Sepsis syndrome was present in 70.6% of all the children. Peak inspiratory pressure, positive end-expiratory pressure (PEEP), and ventilation index values could distinguish outcome by day 3. A significant relationship between respiratory data and outcome related to efficiency of oxygenation, as determined by PaO(2)/FIO(2) and P(A-a)O(2), was present from day 8 after onset of mechanical ventilation.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_26237424", "pmid": "26237424", "task": "evidence_qa", "question": "Does patient-prosthesis mismatch after aortic valve replacement affect survival and quality of life in elderly patients?", "context": "BACKGROUND: To evaluate the impact of patient-prosthesis mismatch (PPM) on survival, functional status, and quality of life (QoL) after aortic valve replacement (AVR) with small prosthesis size in elderly patients.\n\nMETHODS: Between January 2005 and December 2013, 152 patients with pure aortic stenosis, aged at least 75 years, underwent AVR, with a 19 or 21 mm prosthetic heart valve. PPM was defined as an indexed effective orifice area less than 0.85 cm/m. Median age was 82 years (range 75-93 years). Mean follow-up was 56 months (range 1-82 months) and was 98% complete. Late survival rate, New York Heart Association functional class, and QoL (RAND SF-36) were assessed.\n\nRESULTS: Overall, PPM was found in 78 patients (53.8%). Among them, 42 patients (29%) had an indexed effective orifice area less than 0.75 cm/m and 17 less than 0.65 cm/m (11.7%). Overall survival at 5 years was 78 ± 4.5% and was not influenced by PPM (P = NS). The mean New York Heart Association class for long-term survivors with PPM improved from 3.0 to 1.7 (P < 0.001). QoL (physical functioning 45.18 ± 11.35, energy/fatigue 49.36 ± 8.64, emotional well being 58.84 ± 15.44, social functioning 61.29 ± 6.15) was similar to that of no-PPM patients (P = NS).", "ground_truth": {"decision": "no", "answer": "PPM after AVR does not affect survival, functional status, and QoL in patients aged at least 75 years. Surgical procedures, often time-consuming, contemplated to prevent PPM, may therefore be not justified in this patient subgroup.", "evidence": ["Overall, PPM was found in 78 patients (53.8%). Among them, 42 patients (29%) had an indexed effective orifice area less than 0.75 cm/m and 17 less than 0.65 cm/m (11.7%). Overall survival at 5 years was 78 ± 4.5% and was not influenced by PPM (P = NS). The mean New York Heart Association class for long-term survivors with PPM improved from 3.0 to 1.7 (P < 0.001). QoL (physical functioning 45.18 ± 11.35, energy/fatigue 49.36 ± 8.64, emotional well being 58.84 ± 15.44, social functioning 61.29 ± 6.15) was similar to that of no-PPM patients (P = NS)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: To evaluate the impact of patient-prosthesis mismatch (PPM) on survival, functional status, and quality of life (QoL) after aortic valve replacement (AVR) with small prosthesis size in elderly patients.\n\nMETHODS: Between January 2005 and December 2013, 152 patients with pure aortic stenosis, aged at least 75 years, underwent AVR, with a 19 or 21 mm prosthetic heart valve. PPM was defined as an indexed effective orifice area less than 0.85 cm/m. Median age was 82 years (range 75-93 years). Mean follow-up was 56 months (range 1-82 months) and was 98% complete. Late survival rate, New York Heart Association functional class, and QoL (RAND SF-36) were assessed.\n\nRESULTS: Overall, PPM was found in 78 patients (53.8%). Among them, 42 patients (29%) had an indexed effective orifice area less than 0.75 cm/m and 17 less than 0.65 cm/m (11.7%). Overall survival at 5 years was 78 ± 4.5% and was not influenced by PPM (P = NS). The mean New York Heart Association class for long-term survivors with PPM improved from 3.0 to 1.7 (P < 0.001). QoL (physical functioning 45.18 ± 11.35, energy/fatigue 49.36 ± 8.64, emotional well being 58.84 ± 15.44, social functioning 61.29 ± 6.15) was similar to that of no-PPM patients (P = NS).\n\nBiomedical Question:\nDoes patient-prosthesis mismatch after aortic valve replacement affect survival and quality of life in elderly patients?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"PPM after AVR does not affect survival, functional status, and QoL in patients aged at least 75 years. Surgical procedures, often time-consuming, contemplated to prevent PPM, may therefore be not justified in this patient subgroup.\",\n  \"evidence\": [\n    \"Overall, PPM was found in 78 patients (53.8%). Among them, 42 patients (29%) had an indexed effective orifice area less than 0.75 cm/m and 17 less than 0.65 cm/m (11.7%). Overall survival at 5 years was 78 ± 4.5% and was not influenced by PPM (P = NS). The mean New York Heart Association class for long-term survivors with PPM improved from 3.0 to 1.7 (P < 0.001). QoL (physical functioning 45.18 ± 11.35, energy/fatigue 49.36 ± 8.64, emotional well being 58.84 ± 15.44, social functioning 61.29 ± 6.15) was similar to that of no-PPM patients (P = NS).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_15483019", "pmid": "15483019", "task": "evidence_qa", "question": "Is eligibility for a chemotherapy protocol a good prognostic factor for invasive bladder cancer after radical cystectomy?", "context": "PURPOSE: To assess whether eligibility to an adjuvant chemotherapy protocol in itself represents a good prognostic factor after radical cystectomy for bladder cancer.\n\nPATIENTS AND METHODS: Between April 1984 and May 1989, our institution entered 35 patients with invasive bladder cancer into the Swiss Group for Clinical and Epidemiological Cancer Research (SAKK) study 09/84. They were randomly assigned to either observation or three postoperative courses of cisplatin monotherapy after cystectomy. This study had a negative result. The outcome of these 35 patients (protocol group) was compared with an age- and tumor-stage-matched cohort (matched group; n = 35) who also underwent cystectomy during the same period, but were not entered into the SAKK study, as well as the remaining 57 patients treated during the study period for the same indication (remaining group).\n\nRESULTS: Median overall survival decreased from 76.3 months in the protocol group to 52.1 months in the matched group and to 20.3 months in the remaining group. The respective times of median recurrence-free survival were 67.2, 16.0, and 9.4 months. Tumor progression occurred in 46% of the protocol group compared with 69% in the matched group and 65% in the remaining group (P<.05). Cancer-related death was noted in 40% of the protocol group, 57% in the matched group, and 56% in the remaining group.", "ground_truth": {"decision": "yes", "answer": "These data suggest that being willing and fit enough for a chemotherapy protocol is a good prognostic factor for invasive bladder cancer. This eligibility bias emphasizes the need for prospective, randomized trials, and indicates that single-group studies using historical or matched controls have to be interpreted with caution.", "evidence": ["Median overall survival decreased from 76.3 months in the protocol group to 52.1 months in the matched group and to 20.3 months in the remaining group. The respective times of median recurrence-free survival were 67.2, 16.0, and 9.4 months. Tumor progression occurred in 46% of the protocol group compared with 69% in the matched group and 65% in the remaining group (P<.05). Cancer-related death was noted in 40% of the protocol group, 57% in the matched group, and 56% in the remaining group."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: To assess whether eligibility to an adjuvant chemotherapy protocol in itself represents a good prognostic factor after radical cystectomy for bladder cancer.\n\nPATIENTS AND METHODS: Between April 1984 and May 1989, our institution entered 35 patients with invasive bladder cancer into the Swiss Group for Clinical and Epidemiological Cancer Research (SAKK) study 09/84. They were randomly assigned to either observation or three postoperative courses of cisplatin monotherapy after cystectomy. This study had a negative result. The outcome of these 35 patients (protocol group) was compared with an age- and tumor-stage-matched cohort (matched group; n = 35) who also underwent cystectomy during the same period, but were not entered into the SAKK study, as well as the remaining 57 patients treated during the study period for the same indication (remaining group).\n\nRESULTS: Median overall survival decreased from 76.3 months in the protocol group to 52.1 months in the matched group and to 20.3 months in the remaining group. The respective times of median recurrence-free survival were 67.2, 16.0, and 9.4 months. Tumor progression occurred in 46% of the protocol group compared with 69% in the matched group and 65% in the remaining group (P<.05). Cancer-related death was noted in 40% of the protocol group, 57% in the matched group, and 56% in the remaining group.\n\nBiomedical Question:\nIs eligibility for a chemotherapy protocol a good prognostic factor for invasive bladder cancer after radical cystectomy?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"These data suggest that being willing and fit enough for a chemotherapy protocol is a good prognostic factor for invasive bladder cancer. This eligibility bias emphasizes the need for prospective, randomized trials, and indicates that single-group studies using historical or matched controls have to be interpreted with caution.\",\n  \"evidence\": [\n    \"Median overall survival decreased from 76.3 months in the protocol group to 52.1 months in the matched group and to 20.3 months in the remaining group. The respective times of median recurrence-free survival were 67.2, 16.0, and 9.4 months. Tumor progression occurred in 46% of the protocol group compared with 69% in the matched group and 65% in the remaining group (P<.05). Cancer-related death was noted in 40% of the protocol group, 57% in the matched group, and 56% in the remaining group.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_20871246", "pmid": "20871246", "task": "evidence_qa", "question": "Young-Burgess classification of pelvic ring fractures: does it predict mortality, transfusion requirements, and non-orthopaedic injuries?", "context": "OBJECTIVES: The objectives of this study were to evaluate the ability of the Young-Burgess classification system to predict mortality, transfusion requirements, and nonorthopaedic injuries in patients with pelvic ring fractures and to determine whether mortality rates after pelvic fractures have changed over time.\n\nDESIGN: Retrospective review.\n\nSETTING: Level I trauma center.\n\nPATIENTS: One thousand two hundred forty-eight patients with pelvic fractures during a 7-year period.\n\nINTERVENTION: None.\n\nMAIN OUTCOME MEASUREMENTS: Mortality at index admission, transfusion requirement during first 24 hours, and presence of nonorthopaedic injuries as a function of Young-Burgess pelvic classification type. Mortality compared with historic controls.\n\nRESULTS: Despite a relatively large sample size, the ability of the Young-Burgess system to predict mortality only approached statistical significance (P = 0.07, Kruskal-Wallis). The Young-Burgess system differentiated transfusion requirements--lateral compression Type 3 (LC3) and anteroposterior compression Types 2 (APC2) and 3 (APC3) fractures had higher transfusion requirements than did lateral compression Type 1 (LC1), anteroposterior compression Type 1 (APC1), and vertical shear (VS) (P<0.05)--but was not as useful at predicting head, chest, or abdomen injuries. Dividing fractures into stable and unstable types allowed the system to predict mortality rates, abdomen injury rates, and transfusion requirements. Overall mortality in the study group was 9.1%, unchanged from original Young-Burgess studies 15 years previously (P = 0.3).", "ground_truth": {"decision": "maybe", "answer": "The Young-Burgess system is useful for predicting transfusion requirements. For the system to predict mortality or nonorthopaedic injuries, fractures must be divided into stable (APC1, LC1) and unstable (APC2, APC3, LC2, LC3, VS, combined mechanism of injury) types. LC1 injuries are very common and not always benign (overall mortality rate, 8.2%).", "evidence": ["Despite a relatively large sample size, the ability of the Young-Burgess system to predict mortality only approached statistical significance (P = 0.07, Kruskal-Wallis). The Young-Burgess system differentiated transfusion requirements--lateral compression Type 3 (LC3) and anteroposterior compression Types 2 (APC2) and 3 (APC3) fractures had higher transfusion requirements than did lateral compression Type 1 (LC1), anteroposterior compression Type 1 (APC1), and vertical shear (VS) (P<0.05)--but was not as useful at predicting head, chest, or abdomen injuries. Dividing fractures into stable and unstable types allowed the system to predict mortality rates, abdomen injury rates, and transfusion requirements. Overall mortality in the study group was 9.1%, unchanged from original Young-Burgess studies 15 years previously (P = 0.3)."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVES: The objectives of this study were to evaluate the ability of the Young-Burgess classification system to predict mortality, transfusion requirements, and nonorthopaedic injuries in patients with pelvic ring fractures and to determine whether mortality rates after pelvic fractures have changed over time.\n\nDESIGN: Retrospective review.\n\nSETTING: Level I trauma center.\n\nPATIENTS: One thousand two hundred forty-eight patients with pelvic fractures during a 7-year period.\n\nINTERVENTION: None.\n\nMAIN OUTCOME MEASUREMENTS: Mortality at index admission, transfusion requirement during first 24 hours, and presence of nonorthopaedic injuries as a function of Young-Burgess pelvic classification type. Mortality compared with historic controls.\n\nRESULTS: Despite a relatively large sample size, the ability of the Young-Burgess system to predict mortality only approached statistical significance (P = 0.07, Kruskal-Wallis). The Young-Burgess system differentiated transfusion requirements--lateral compression Type 3 (LC3) and anteroposterior compression Types 2 (APC2) and 3 (APC3) fractures had higher transfusion requirements than did lateral compression Type 1 (LC1), anteroposterior compression Type 1 (APC1), and vertical shear (VS) (P<0.05)--but was not as useful at predicting head, chest, or abdomen injuries. Dividing fractures into stable and unstable types allowed the system to predict mortality rates, abdomen injury rates, and transfusion requirements. Overall mortality in the study group was 9.1%, unchanged from original Young-Burgess studies 15 years previously (P = 0.3).\n\nBiomedical Question:\nYoung-Burgess classification of pelvic ring fractures: does it predict mortality, transfusion requirements, and non-orthopaedic injuries?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"The Young-Burgess system is useful for predicting transfusion requirements. For the system to predict mortality or nonorthopaedic injuries, fractures must be divided into stable (APC1, LC1) and unstable (APC2, APC3, LC2, LC3, VS, combined mechanism of injury) types. LC1 injuries are very common and not always benign (overall mortality rate, 8.2%).\",\n  \"evidence\": [\n    \"Despite a relatively large sample size, the ability of the Young-Burgess system to predict mortality only approached statistical significance (P = 0.07, Kruskal-Wallis). The Young-Burgess system differentiated transfusion requirements--lateral compression Type 3 (LC3) and anteroposterior compression Types 2 (APC2) and 3 (APC3) fractures had higher transfusion requirements than did lateral compression Type 1 (LC1), anteroposterior compression Type 1 (APC1), and vertical shear (VS) (P<0.05)--but was not as useful at predicting head, chest, or abdomen injuries. Dividing fractures into stable and unstable types allowed the system to predict mortality rates, abdomen injury rates, and transfusion requirements. Overall mortality in the study group was 9.1%, unchanged from original Young-Burgess studies 15 years previously (P = 0.3).\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_20971618", "pmid": "20971618", "task": "evidence_qa", "question": "Are lifetime prevalence of impetigo, molluscum and herpes infection really increased in children having atopic dermatitis?", "context": "BACKGROUND: Cutaneous infections such as impetigo contagiosum (IC), molluscum contagiosum (MC) and herpes virus infection (HI) appear to be associated with atopic dermatitis (AD), but there are no reports of concrete epidemiological evidence.\n\nOBJECTIVE: We evaluated the association of childhood AD with these infections by conducting a population-based cross-sectional study.\n\nMETHODS: Enrolled in this study were 1117 children aged 0-6 years old attending nursery schools in Ishigaki City, Okinawa Prefecture, Japan. Physical examination was performed by dermatologists, and a questionnaire was completed on each child's history of allergic diseases including AD, asthma, allergic rhinitis and egg allergy, and that of skin infections including IC, MC and HI, as well as familial history of AD.\n\nRESULTS: In 913 children (AD; 132), a history of IC, MC or HI was observed in 45.1%, 19.7%, and 2.5%, respectively. Multiple logistic regression analysis revealed that the odds of having a history of IC were 1.8 times higher in AD children than in non-AD children. Meanwhile, a history of MC was significantly correlated to the male gender, but not to a personal history of AD. As for HI, we found no correlated factors in this study.", "ground_truth": {"decision": "maybe", "answer": "The lifetime prevalence of IC was indeed higher in young children with a history of AD.", "evidence": ["In 913 children (AD; 132), a history of IC, MC or HI was observed in 45.1%, 19.7%, and 2.5%, respectively. Multiple logistic regression analysis revealed that the odds of having a history of IC were 1.8 times higher in AD children than in non-AD children. Meanwhile, a history of MC was significantly correlated to the male gender, but not to a personal history of AD. As for HI, we found no correlated factors in this study."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Cutaneous infections such as impetigo contagiosum (IC), molluscum contagiosum (MC) and herpes virus infection (HI) appear to be associated with atopic dermatitis (AD), but there are no reports of concrete epidemiological evidence.\n\nOBJECTIVE: We evaluated the association of childhood AD with these infections by conducting a population-based cross-sectional study.\n\nMETHODS: Enrolled in this study were 1117 children aged 0-6 years old attending nursery schools in Ishigaki City, Okinawa Prefecture, Japan. Physical examination was performed by dermatologists, and a questionnaire was completed on each child's history of allergic diseases including AD, asthma, allergic rhinitis and egg allergy, and that of skin infections including IC, MC and HI, as well as familial history of AD.\n\nRESULTS: In 913 children (AD; 132), a history of IC, MC or HI was observed in 45.1%, 19.7%, and 2.5%, respectively. Multiple logistic regression analysis revealed that the odds of having a history of IC were 1.8 times higher in AD children than in non-AD children. Meanwhile, a history of MC was significantly correlated to the male gender, but not to a personal history of AD. As for HI, we found no correlated factors in this study.\n\nBiomedical Question:\nAre lifetime prevalence of impetigo, molluscum and herpes infection really increased in children having atopic dermatitis?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"The lifetime prevalence of IC was indeed higher in young children with a history of AD.\",\n  \"evidence\": [\n    \"In 913 children (AD; 132), a history of IC, MC or HI was observed in 45.1%, 19.7%, and 2.5%, respectively. Multiple logistic regression analysis revealed that the odds of having a history of IC were 1.8 times higher in AD children than in non-AD children. Meanwhile, a history of MC was significantly correlated to the male gender, but not to a personal history of AD. As for HI, we found no correlated factors in this study.\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_21420186", "pmid": "21420186", "task": "evidence_qa", "question": "Could ADMA levels in young adults born preterm predict an early endothelial dysfunction?", "context": "BACKGROUND: Sporadic data present in literature report how preterm birth and low birth weight are risk factors for the development of cardiovascular diseases in later life. High levels of asymmetric dimethylarginine (ADMA), a strong inhibitor of nitric oxide synthesis, are associated with the future development of adverse cardiovascular events and cardiac death.\n\nAIMS: 1) to verify the presence of a statistically significant difference between ADMA levels in young adults born preterm at extremely low birth weight (<1000 g; ex-ELBW) and those of a control group of healthy adults born at term (C) and 2) to seek correlations between ADMA levels in ex-ELBW and anthropometric and clinical parameters (gender, chronological age, gestational age, birth weight, and duration of stay in Neonatal Intensive Care Unit).\n\nMETHODS: Thirty-two ex-ELBW subjects (11 males [M] and 21 females [F], aged 17-29years, mean age 22.2 ± 2.3 years) were compared with 25 C (7 M and 18F). ADMA levels were assessed by high-performance liquid chromatography with highly sensitive laser fluorescent detection.\n\nRESULTS: ADMA levels were reduced in ex-ELBW subjects compared to C (0.606+0.095 vs 0.562+0.101 μmol/L, p<0.05), and significantly correlated inversely with gestational age (r=-0.61, p<0.00001) and birth weight (r=-0.57, p<0.0002).", "ground_truth": {"decision": "yes", "answer": "Our findings reveal a significant decrease in ADMA levels of ex-ELBW subjects compared to C, underlining a probable correlation with preterm birth and low birth weight. Taken together, these results may underlie the onset of early circulatory dysfunction predictive of increased cardiovascular risk.", "evidence": ["ADMA levels were reduced in ex-ELBW subjects compared to C (0.606+0.095 vs 0.562+0.101 μmol/L, p<0.05), and significantly correlated inversely with gestational age (r=-0.61, p<0.00001) and birth weight (r=-0.57, p<0.0002)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Sporadic data present in literature report how preterm birth and low birth weight are risk factors for the development of cardiovascular diseases in later life. High levels of asymmetric dimethylarginine (ADMA), a strong inhibitor of nitric oxide synthesis, are associated with the future development of adverse cardiovascular events and cardiac death.\n\nAIMS: 1) to verify the presence of a statistically significant difference between ADMA levels in young adults born preterm at extremely low birth weight (<1000 g; ex-ELBW) and those of a control group of healthy adults born at term (C) and 2) to seek correlations between ADMA levels in ex-ELBW and anthropometric and clinical parameters (gender, chronological age, gestational age, birth weight, and duration of stay in Neonatal Intensive Care Unit).\n\nMETHODS: Thirty-two ex-ELBW subjects (11 males [M] and 21 females [F], aged 17-29years, mean age 22.2 ± 2.3 years) were compared with 25 C (7 M and 18F). ADMA levels were assessed by high-performance liquid chromatography with highly sensitive laser fluorescent detection.\n\nRESULTS: ADMA levels were reduced in ex-ELBW subjects compared to C (0.606+0.095 vs 0.562+0.101 μmol/L, p<0.05), and significantly correlated inversely with gestational age (r=-0.61, p<0.00001) and birth weight (r=-0.57, p<0.0002).\n\nBiomedical Question:\nCould ADMA levels in young adults born preterm predict an early endothelial dysfunction?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Our findings reveal a significant decrease in ADMA levels of ex-ELBW subjects compared to C, underlining a probable correlation with preterm birth and low birth weight. Taken together, these results may underlie the onset of early circulatory dysfunction predictive of increased cardiovascular risk.\",\n  \"evidence\": [\n    \"ADMA levels were reduced in ex-ELBW subjects compared to C (0.606+0.095 vs 0.562+0.101 μmol/L, p<0.05), and significantly correlated inversely with gestational age (r=-0.61, p<0.00001) and birth weight (r=-0.57, p<0.0002).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_23916653", "pmid": "23916653", "task": "evidence_qa", "question": "Orthostatic myoclonus: an underrecognized cause of unsteadiness?", "context": "BACKGROUND AND PURPOSE: Recently, orthostatic myoclonus (OM) has been suggested as a cause of gait impairment and unsteadiness in neurodegenerative diseases. The aim of this study was to investigate the frequency of orthostatic myoclonus, its clinical characteristics and the underlying associated neurological disorders.\n\nMETHODS: A retrospective analysis of clinical data and electromyogram surface recordings from subjects with unexplained unsteadiness/gait impairment was performed. Diagnosis of OM was made when a pattern of non-rhythmic bursts was observed (duration range 20-100 ms; bursts per second ≤16).\n\nRESULTS: Among 93 subjects studied, OM was the most frequent disorder (n = 16; 17.2%), followed by orthostatic tremor (13.9%) and low frequency tremors during orthostatism (12.9%). All patients with OM complained about unsteadiness during orthostatism and/or during gait. Leg jerking was only observed by visual inspection during orthostatism in four subjects and two also presented falls. Eleven out of 16 patients (68.7%) with OM had an associated neurodegenerative disease, such as multiple system atrophy (n = 3) Parkinson's disease (n = 2), Alzheimer's disease (n = 2), mild cognitive impairment (n = 2) and normal pressure hydrocephalus (n = 2). Although four subjects showed improvement of orthostatic myoclonus with antimyoclonic treatment, the follow-up was not systematic enough to evaluate their therapeutic effect on OM.", "ground_truth": {"decision": "yes", "answer": "Orthostatic myoclonus is often underdiagnosed and can be considered a possible cause of unsteadiness in subjects with neurodegenerative diseases. Electromyography surface recording is thereby an aid for investigating unsteadiness of unknown origin.", "evidence": ["Among 93 subjects studied, OM was the most frequent disorder (n = 16; 17.2%), followed by orthostatic tremor (13.9%) and low frequency tremors during orthostatism (12.9%). All patients with OM complained about unsteadiness during orthostatism and/or during gait. Leg jerking was only observed by visual inspection during orthostatism in four subjects and two also presented falls. Eleven out of 16 patients (68.7%) with OM had an associated neurodegenerative disease, such as multiple system atrophy (n = 3) Parkinson's disease (n = 2), Alzheimer's disease (n = 2), mild cognitive impairment (n = 2) and normal pressure hydrocephalus (n = 2). Although four subjects showed improvement of orthostatic myoclonus with antimyoclonic treatment, the follow-up was not systematic enough to evaluate their therapeutic effect on OM."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND AND PURPOSE: Recently, orthostatic myoclonus (OM) has been suggested as a cause of gait impairment and unsteadiness in neurodegenerative diseases. The aim of this study was to investigate the frequency of orthostatic myoclonus, its clinical characteristics and the underlying associated neurological disorders.\n\nMETHODS: A retrospective analysis of clinical data and electromyogram surface recordings from subjects with unexplained unsteadiness/gait impairment was performed. Diagnosis of OM was made when a pattern of non-rhythmic bursts was observed (duration range 20-100 ms; bursts per second ≤16).\n\nRESULTS: Among 93 subjects studied, OM was the most frequent disorder (n = 16; 17.2%), followed by orthostatic tremor (13.9%) and low frequency tremors during orthostatism (12.9%). All patients with OM complained about unsteadiness during orthostatism and/or during gait. Leg jerking was only observed by visual inspection during orthostatism in four subjects and two also presented falls. Eleven out of 16 patients (68.7%) with OM had an associated neurodegenerative disease, such as multiple system atrophy (n = 3) Parkinson's disease (n = 2), Alzheimer's disease (n = 2), mild cognitive impairment (n = 2) and normal pressure hydrocephalus (n = 2). Although four subjects showed improvement of orthostatic myoclonus with antimyoclonic treatment, the follow-up was not systematic enough to evaluate their therapeutic effect on OM.\n\nBiomedical Question:\nOrthostatic myoclonus: an underrecognized cause of unsteadiness?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Orthostatic myoclonus is often underdiagnosed and can be considered a possible cause of unsteadiness in subjects with neurodegenerative diseases. Electromyography surface recording is thereby an aid for investigating unsteadiness of unknown origin.\",\n  \"evidence\": [\n    \"Among 93 subjects studied, OM was the most frequent disorder (n = 16; 17.2%), followed by orthostatic tremor (13.9%) and low frequency tremors during orthostatism (12.9%). All patients with OM complained about unsteadiness during orthostatism and/or during gait. Leg jerking was only observed by visual inspection during orthostatism in four subjects and two also presented falls. Eleven out of 16 patients (68.7%) with OM had an associated neurodegenerative disease, such as multiple system atrophy (n = 3) Parkinson's disease (n = 2), Alzheimer's disease (n = 2), mild cognitive impairment (n = 2) and normal pressure hydrocephalus (n = 2). Although four subjects showed improvement of orthostatic myoclonus with antimyoclonic treatment, the follow-up was not systematic enough to evaluate their therapeutic effect on OM.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_22188074", "pmid": "22188074", "task": "evidence_qa", "question": "Do instrumental activities of daily living predict dementia at 1- and 2-year follow-up?", "context": "OBJECTIVES: To investigate whether problems in instrumental activities of daily living (IADL) can add to conventionally used clinical measurements in helping to predict a diagnosis of dementia at 1- and 2-year follow-up.\n\nDESIGN: Multicenter prospective cohort study.\n\nSETTING: Memory clinics in Europe.\n\nPARTICIPANTS: Individuals aged 55 and older without dementia.\n\nMEASUREMENTS: IADLs were measured using pooled activities from five informant-based questionnaires. Structural equation modeling (SEM) was used to investigate the relation between IADLs and dementia. Age, sex, education, depression, and cognitive measures (Mini-Mental State Examination and verbal memory) were included in the model.\n\nRESULTS: Five hundred thirty-one participants had baseline and 1-year follow-up assessments; 69 (13.0%) of these had developed dementia at 1-year follow-up. At 2-year follow-up, 481 participants were seen, of whom 100 (20.8%) had developed dementia. Participants with IADL disabilities at baseline had a higher conversion rate (24.4%) than participants without IADL disabilities (16.7%) (chi-square = 4.28, degrees of freedom = 1, P = .04). SEM showed that IADL disability could help predict dementia in addition to the measured variables at 1-year follow-up (odds ratio (OR) = 2.20, 95% confidence interval (CI) = 1.51-3.13) and 2-year follow-up (OR = 2.11, 95% CI = 1.33-3.33).", "ground_truth": {"decision": "yes", "answer": "IADL disability is a useful addition to the diagnostic process in a memory clinic setting, indicating who is at higher risk of developing dementia at 1- and 2-year follow-up.", "evidence": ["Five hundred thirty-one participants had baseline and 1-year follow-up assessments; 69 (13.0%) of these had developed dementia at 1-year follow-up. At 2-year follow-up, 481 participants were seen, of whom 100 (20.8%) had developed dementia. Participants with IADL disabilities at baseline had a higher conversion rate (24.4%) than participants without IADL disabilities (16.7%) (chi-square = 4.28, degrees of freedom = 1, P = .04). SEM showed that IADL disability could help predict dementia in addition to the measured variables at 1-year follow-up (odds ratio (OR) = 2.20, 95% confidence interval (CI) = 1.51-3.13) and 2-year follow-up (OR = 2.11, 95% CI = 1.33-3.33)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVES: To investigate whether problems in instrumental activities of daily living (IADL) can add to conventionally used clinical measurements in helping to predict a diagnosis of dementia at 1- and 2-year follow-up.\n\nDESIGN: Multicenter prospective cohort study.\n\nSETTING: Memory clinics in Europe.\n\nPARTICIPANTS: Individuals aged 55 and older without dementia.\n\nMEASUREMENTS: IADLs were measured using pooled activities from five informant-based questionnaires. Structural equation modeling (SEM) was used to investigate the relation between IADLs and dementia. Age, sex, education, depression, and cognitive measures (Mini-Mental State Examination and verbal memory) were included in the model.\n\nRESULTS: Five hundred thirty-one participants had baseline and 1-year follow-up assessments; 69 (13.0%) of these had developed dementia at 1-year follow-up. At 2-year follow-up, 481 participants were seen, of whom 100 (20.8%) had developed dementia. Participants with IADL disabilities at baseline had a higher conversion rate (24.4%) than participants without IADL disabilities (16.7%) (chi-square = 4.28, degrees of freedom = 1, P = .04). SEM showed that IADL disability could help predict dementia in addition to the measured variables at 1-year follow-up (odds ratio (OR) = 2.20, 95% confidence interval (CI) = 1.51-3.13) and 2-year follow-up (OR = 2.11, 95% CI = 1.33-3.33).\n\nBiomedical Question:\nDo instrumental activities of daily living predict dementia at 1- and 2-year follow-up?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"IADL disability is a useful addition to the diagnostic process in a memory clinic setting, indicating who is at higher risk of developing dementia at 1- and 2-year follow-up.\",\n  \"evidence\": [\n    \"Five hundred thirty-one participants had baseline and 1-year follow-up assessments; 69 (13.0%) of these had developed dementia at 1-year follow-up. At 2-year follow-up, 481 participants were seen, of whom 100 (20.8%) had developed dementia. Participants with IADL disabilities at baseline had a higher conversion rate (24.4%) than participants without IADL disabilities (16.7%) (chi-square = 4.28, degrees of freedom = 1, P = .04). SEM showed that IADL disability could help predict dementia in addition to the measured variables at 1-year follow-up (odds ratio (OR) = 2.20, 95% confidence interval (CI) = 1.51-3.13) and 2-year follow-up (OR = 2.11, 95% CI = 1.33-3.33).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_18375490", "pmid": "18375490", "task": "evidence_qa", "question": "Are laboratories reporting serum quantitative hCG results correctly?", "context": "BACKGROUND: Human chorionic gonadotropin (hCG) is a heterodimeric glycoprotein hormone that exists in multiple forms. Immunoassays commonly used in clinical laboratories measure intact hCG, total beta hCG (intact hCG + hCG free beta-subunit), and/or hCG free beta-subunit. Measurement of serum concentrations of hCG is useful for confirmation and monitoring of pregnancy, diagnosis of trophoblastic diseases and monitoring of the efficacy of treatment, and prenatal screening. Correctly reporting results for the various forms of hCG is clinically important.\n\nMETHOD: We prepared samples by addition of intact hCG and hCG free beta-subunit to an essentially hCG-free human serum matrix. The samples were analyzed by participant laboratories using various immunoassay methods.\n\nRESULTS: We identified errors in participant reporting of intact hCG results as total beta hCG (9.3%; 22 of 235 laboratories) and total beta hCG as intact hCG (13.1%; 8 of 61 laboratories).", "ground_truth": {"decision": "no", "answer": "Many factors contribute to the erroneous reporting of hCG results, including (a) the complexity of hCG molecule and confusion of nomenclature on the various forms of hCG; (b) laboratory personnel's lack of awareness of the distinctions of the forms of hCG and failure to recognize the specificity of assays for their measurement; (c) lack of clarity and uniformity in manufacturers' reagent labeling; and (d) most product inserts' lack of information on the specificity of each method to the various forms of hCG.", "evidence": ["We identified errors in participant reporting of intact hCG results as total beta hCG (9.3%; 22 of 235 laboratories) and total beta hCG as intact hCG (13.1%; 8 of 61 laboratories)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Human chorionic gonadotropin (hCG) is a heterodimeric glycoprotein hormone that exists in multiple forms. Immunoassays commonly used in clinical laboratories measure intact hCG, total beta hCG (intact hCG + hCG free beta-subunit), and/or hCG free beta-subunit. Measurement of serum concentrations of hCG is useful for confirmation and monitoring of pregnancy, diagnosis of trophoblastic diseases and monitoring of the efficacy of treatment, and prenatal screening. Correctly reporting results for the various forms of hCG is clinically important.\n\nMETHOD: We prepared samples by addition of intact hCG and hCG free beta-subunit to an essentially hCG-free human serum matrix. The samples were analyzed by participant laboratories using various immunoassay methods.\n\nRESULTS: We identified errors in participant reporting of intact hCG results as total beta hCG (9.3%; 22 of 235 laboratories) and total beta hCG as intact hCG (13.1%; 8 of 61 laboratories).\n\nBiomedical Question:\nAre laboratories reporting serum quantitative hCG results correctly?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"Many factors contribute to the erroneous reporting of hCG results, including (a) the complexity of hCG molecule and confusion of nomenclature on the various forms of hCG; (b) laboratory personnel's lack of awareness of the distinctions of the forms of hCG and failure to recognize the specificity of assays for their measurement; (c) lack of clarity and uniformity in manufacturers' reagent labeling; and (d) most product inserts' lack of information on the specificity of each method to the various forms of hCG.\",\n  \"evidence\": [\n    \"We identified errors in participant reporting of intact hCG results as total beta hCG (9.3%; 22 of 235 laboratories) and total beta hCG as intact hCG (13.1%; 8 of 61 laboratories).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_27281318", "pmid": "27281318", "task": "evidence_qa", "question": "Can Flexible Instruments Create Adequate Femoral Tunnel Lengths at 90° of Knee Flexion in Anterior Cruciate Ligament Reconstruction?", "context": "PURPOSE: This study aims to study femoral tunnel lengths drilled with a flexible reamer and the distance to important lateral structures obtained by flexing the knee at various angles and by drilling the guide pins arthroscopically to resemble clinical practice. The purpose of this cadaveric study was twofold: 1. to determine whether femoral tunnel lengths of greater than 20 mm can be created with a flexible reamer system at 90 ° of knee flexion and 2. to determine whether the lateral structures of the knee are safe with this technique.\n\nMETHODS: Ten fresh cadaveric knees were utilized. The intra-osseous length can be measured with a specially de - signed flexible guide pin. Flexible pins were inserted with the knee at 70°, 90°, and 120° of flexion. The intra-osseous length was measured with the measuring device. Each speci - men was dissected around the lateral aspect of the knee to identify the critical structures, the common peroneal nerve, and the LCL. The distance from the guide pins to the com - mon peroneal nerve and femoral attachment of the LCL were measured with a standard flexible paper ruler to the nearest millimeter.\n\nRESULTS: There is a trend for progressively increasing mean intra-osseous length associated with increased flexion of the knee. The mean intra-osseous length for 70° flexion was 25.2 mm (20 mm to 32 mm), which was statistically significant when compared to mean intra-osseous lengths of 32.1 mm (22 mm to 45 mm) and 38.0 mm (34 mm to 45 mm) in the 90° and 120° flexion groups, respectively (p<0.05). There were no significant differences among the groups with respect to distance to the LCL. There is a trend toward longer distances to the common peroneal nerve with increased flexion. There was a statistically significant dif - ference when comparing 120° versus 70° (p<0.05).", "ground_truth": {"decision": "yes", "answer": "This study that shows that adequate femoral tunnel lengths can be safely created without knee hyperflex - ion using flexible instruments via an anteromedial portal.", "evidence": ["There is a trend for progressively increasing mean intra-osseous length associated with increased flexion of the knee. The mean intra-osseous length for 70° flexion was 25.2 mm (20 mm to 32 mm), which was statistically significant when compared to mean intra-osseous lengths of 32.1 mm (22 mm to 45 mm) and 38.0 mm (34 mm to 45 mm) in the 90° and 120° flexion groups, respectively (p<0.05). There were no significant differences among the groups with respect to distance to the LCL. There is a trend toward longer distances to the common peroneal nerve with increased flexion. There was a statistically significant dif - ference when comparing 120° versus 70° (p<0.05)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: This study aims to study femoral tunnel lengths drilled with a flexible reamer and the distance to important lateral structures obtained by flexing the knee at various angles and by drilling the guide pins arthroscopically to resemble clinical practice. The purpose of this cadaveric study was twofold: 1. to determine whether femoral tunnel lengths of greater than 20 mm can be created with a flexible reamer system at 90 ° of knee flexion and 2. to determine whether the lateral structures of the knee are safe with this technique.\n\nMETHODS: Ten fresh cadaveric knees were utilized. The intra-osseous length can be measured with a specially de - signed flexible guide pin. Flexible pins were inserted with the knee at 70°, 90°, and 120° of flexion. The intra-osseous length was measured with the measuring device. Each speci - men was dissected around the lateral aspect of the knee to identify the critical structures, the common peroneal nerve, and the LCL. The distance from the guide pins to the com - mon peroneal nerve and femoral attachment of the LCL were measured with a standard flexible paper ruler to the nearest millimeter.\n\nRESULTS: There is a trend for progressively increasing mean intra-osseous length associated with increased flexion of the knee. The mean intra-osseous length for 70° flexion was 25.2 mm (20 mm to 32 mm), which was statistically significant when compared to mean intra-osseous lengths of 32.1 mm (22 mm to 45 mm) and 38.0 mm (34 mm to 45 mm) in the 90° and 120° flexion groups, respectively (p<0.05). There were no significant differences among the groups with respect to distance to the LCL. There is a trend toward longer distances to the common peroneal nerve with increased flexion. There was a statistically significant dif - ference when comparing 120° versus 70° (p<0.05).\n\nBiomedical Question:\nCan Flexible Instruments Create Adequate Femoral Tunnel Lengths at 90° of Knee Flexion in Anterior Cruciate Ligament Reconstruction?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"This study that shows that adequate femoral tunnel lengths can be safely created without knee hyperflex - ion using flexible instruments via an anteromedial portal.\",\n  \"evidence\": [\n    \"There is a trend for progressively increasing mean intra-osseous length associated with increased flexion of the knee. The mean intra-osseous length for 70° flexion was 25.2 mm (20 mm to 32 mm), which was statistically significant when compared to mean intra-osseous lengths of 32.1 mm (22 mm to 45 mm) and 38.0 mm (34 mm to 45 mm) in the 90° and 120° flexion groups, respectively (p<0.05). There were no significant differences among the groups with respect to distance to the LCL. There is a trend toward longer distances to the common peroneal nerve with increased flexion. There was a statistically significant dif - ference when comparing 120° versus 70° (p<0.05).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_17113061", "pmid": "17113061", "task": "evidence_qa", "question": "Do mutations causing low HDL-C promote increased carotid intima-media thickness?", "context": "BACKGROUND: Although observational data support an inverse relationship between high-density lipoprotein (HDL) cholesterol and coronary heart disease (CHD), genetic HDL deficiency states often do not correlate with premature CHD.\n\nMETHODS: Carotid intima-media thickness (cIMT) measurements were obtained in cases comprising 10 different mutations in LCAT, ABCA1 and APOA1 to further evaluate the relationship between low HDL resulting from genetic variation and early atherosclerosis.\n\nRESULTS: In a 1:2 case-control study of sex and age-related (+/-5 y) subjects (n=114), cIMT was nearly identical between cases (0.66+/-0.17 cm) and controls (0.65+/-0.18 cm) despite significantly lower HDL cholesterol (0.67 vs. 1.58 mmol/l) and apolipoprotein A-I levels (96.7 vs. 151.4 mg/dl) (P<0.05)", "ground_truth": {"decision": "no", "answer": "Genetic variants identified in the present study may be insufficient to promote early carotid atherosclerosis.", "evidence": ["In a 1:2 case-control study of sex and age-related (+/-5 y) subjects (n=114), cIMT was nearly identical between cases (0.66+/-0.17 cm) and controls (0.65+/-0.18 cm) despite significantly lower HDL cholesterol (0.67 vs. 1.58 mmol/l) and apolipoprotein A-I levels (96.7 vs. 151.4 mg/dl) (P<0.05)"], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Although observational data support an inverse relationship between high-density lipoprotein (HDL) cholesterol and coronary heart disease (CHD), genetic HDL deficiency states often do not correlate with premature CHD.\n\nMETHODS: Carotid intima-media thickness (cIMT) measurements were obtained in cases comprising 10 different mutations in LCAT, ABCA1 and APOA1 to further evaluate the relationship between low HDL resulting from genetic variation and early atherosclerosis.\n\nRESULTS: In a 1:2 case-control study of sex and age-related (+/-5 y) subjects (n=114), cIMT was nearly identical between cases (0.66+/-0.17 cm) and controls (0.65+/-0.18 cm) despite significantly lower HDL cholesterol (0.67 vs. 1.58 mmol/l) and apolipoprotein A-I levels (96.7 vs. 151.4 mg/dl) (P<0.05)\n\nBiomedical Question:\nDo mutations causing low HDL-C promote increased carotid intima-media thickness?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"Genetic variants identified in the present study may be insufficient to promote early carotid atherosclerosis.\",\n  \"evidence\": [\n    \"In a 1:2 case-control study of sex and age-related (+/-5 y) subjects (n=114), cIMT was nearly identical between cases (0.66+/-0.17 cm) and controls (0.65+/-0.18 cm) despite significantly lower HDL cholesterol (0.67 vs. 1.58 mmol/l) and apolipoprotein A-I levels (96.7 vs. 151.4 mg/dl) (P<0.05)\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_12163782", "pmid": "12163782", "task": "evidence_qa", "question": "Increased neutrophil migratory activity after major trauma: a factor in the etiology of acute respiratory distress syndrome?", "context": "OBJECTIVE: Neutrophil infiltration of the lung is characteristic of early posttraumatic acute respiratory distress syndrome (ARDS). This study examines the ability of neutrophils isolated (over the first 24 hrs) from the peripheral blood of patients admitted after major trauma to migrate in response to interleukin-8. Interleukin-8 is elevated in the lung within 2 hrs of major trauma in patients who later develop ARDS, and thus it plays a central role in the recruitment of neutrophils to the lung and their subsequent activation. We hypothesized that enhanced interleukin-8-mediated neutrophil migratory activity in the early postinjury phase, before the development of ARDS, may be a crucial factor in the etiology of ARDS.\n\nDESIGN: Prospective observational study.\n\nSETTING: University Hospital Wales, the Royal Gwent Hospital, and East Glamorgan General Hospital. Laboratory work was conducted at the Institute of Nephrology.\n\nPATIENTS: Adult blunt trauma victims with Injury Severity Score>or = 18.\n\nMEASUREMENTS AND MAIN RESULTS: Neutrophils were isolated from citrated blood from 17 adult blunt major trauma patients at admission (0 hrs) and 8 and 24 hrs later. Identical samples were obtained from normal laboratory volunteers (n = 9). The neutrophil count in each specimen was measured, and the number of neutrophils migrating across porous tissue culture inserts in response to defined concentrations of interleukin-8 (0, 10, 30, and 100 ng/mL) was quantitated by peroxidase assay. Neutrophil counts in the whole blood specimens obtained from those later developing ARDS were elevated significantly at admission and declined rapidly throughout the next 24 hrs. Significantly greater numbers of trauma patients' neutrophils migrated to concentrations of interleukin-8 (30 and 100 ng/mL) at each time point when compared with normal volunteers (Mann-Whitney U test, p<.05). Neutrophils isolated from major trauma patients exhibited an enhanced migratory response to high concentrations of interleukin-8 throughout the first 24 hrs of admission, in contrast to the normal physiologic attenuation of migration seen in neutrophils isolated from normal laboratory volunteers.", "ground_truth": {"decision": "yes", "answer": "These data indicate that major blunt trauma enhances the migratory capacity of circulating neutrophils. This is manifest within 2 hrs of admission and may be attributable to alteration in interleukin-8 receptor expression, affinity, or downstream signaling. In patients who later develop ARDS, initially elevated circulating neutrophil counts decrease rapidly, over the same time course. Early enhanced neutrophil migratory activity coupled with elevated pulmonary concentrations of interleukin-8 may be central to the establishment of the neutrophil infiltration that is characteristic of ARDS.", "evidence": ["Neutrophils were isolated from citrated blood from 17 adult blunt major trauma patients at admission (0 hrs) and 8 and 24 hrs later. Identical samples were obtained from normal laboratory volunteers (n = 9). The neutrophil count in each specimen was measured, and the number of neutrophils migrating across porous tissue culture inserts in response to defined concentrations of interleukin-8 (0, 10, 30, and 100 ng/mL) was quantitated by peroxidase assay. Neutrophil counts in the whole blood specimens obtained from those later developing ARDS were elevated significantly at admission and declined rapidly throughout the next 24 hrs. Significantly greater numbers of trauma patients' neutrophils migrated to concentrations of interleukin-8 (30 and 100 ng/mL) at each time point when compared with normal volunteers (Mann-Whitney U test, p<.05). Neutrophils isolated from major trauma patients exhibited an enhanced migratory response to high concentrations of interleukin-8 throughout the first 24 hrs of admission, in contrast to the normal physiologic attenuation of migration seen in neutrophils isolated from normal laboratory volunteers."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: Neutrophil infiltration of the lung is characteristic of early posttraumatic acute respiratory distress syndrome (ARDS). This study examines the ability of neutrophils isolated (over the first 24 hrs) from the peripheral blood of patients admitted after major trauma to migrate in response to interleukin-8. Interleukin-8 is elevated in the lung within 2 hrs of major trauma in patients who later develop ARDS, and thus it plays a central role in the recruitment of neutrophils to the lung and their subsequent activation. We hypothesized that enhanced interleukin-8-mediated neutrophil migratory activity in the early postinjury phase, before the development of ARDS, may be a crucial factor in the etiology of ARDS.\n\nDESIGN: Prospective observational study.\n\nSETTING: University Hospital Wales, the Royal Gwent Hospital, and East Glamorgan General Hospital. Laboratory work was conducted at the Institute of Nephrology.\n\nPATIENTS: Adult blunt trauma victims with Injury Severity Score>or = 18.\n\nMEASUREMENTS AND MAIN RESULTS: Neutrophils were isolated from citrated blood from 17 adult blunt major trauma patients at admission (0 hrs) and 8 and 24 hrs later. Identical samples were obtained from normal laboratory volunteers (n = 9). The neutrophil count in each specimen was measured, and the number of neutrophils migrating across porous tissue culture inserts in response to defined concentrations of interleukin-8 (0, 10, 30, and 100 ng/mL) was quantitated by peroxidase assay. Neutrophil counts in the whole blood specimens obtained from those later developing ARDS were elevated significantly at admission and declined rapidly throughout the next 24 hrs. Significantly greater numbers of trauma patients' neutrophils migrated to concentrations of interleukin-8 (30 and 100 ng/mL) at each time point when compared with normal volunteers (Mann-Whitney U test, p<.05). Neutrophils isolated from major trauma patients exhibited an enhanced migratory response to high concentrations of interleukin-8 throughout the first 24 hrs of admission, in contrast to the normal physiologic attenuation of migration seen in neutrophils isolated from normal laboratory volunteers.\n\nBiomedical Question:\nIncreased neutrophil migratory activity after major trauma: a factor in the etiology of acute respiratory distress syndrome?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"These data indicate that major blunt trauma enhances the migratory capacity of circulating neutrophils. This is manifest within 2 hrs of admission and may be attributable to alteration in interleukin-8 receptor expression, affinity, or downstream signaling. In patients who later develop ARDS, initially elevated circulating neutrophil counts decrease rapidly, over the same time course. Early enhanced neutrophil migratory activity coupled with elevated pulmonary concentrations of interleukin-8 may be central to the establishment of the neutrophil infiltration that is characteristic of ARDS.\",\n  \"evidence\": [\n    \"Neutrophils were isolated from citrated blood from 17 adult blunt major trauma patients at admission (0 hrs) and 8 and 24 hrs later. Identical samples were obtained from normal laboratory volunteers (n = 9). The neutrophil count in each specimen was measured, and the number of neutrophils migrating across porous tissue culture inserts in response to defined concentrations of interleukin-8 (0, 10, 30, and 100 ng/mL) was quantitated by peroxidase assay. Neutrophil counts in the whole blood specimens obtained from those later developing ARDS were elevated significantly at admission and declined rapidly throughout the next 24 hrs. Significantly greater numbers of trauma patients' neutrophils migrated to concentrations of interleukin-8 (30 and 100 ng/mL) at each time point when compared with normal volunteers (Mann-Whitney U test, p<.05). Neutrophils isolated from major trauma patients exhibited an enhanced migratory response to high concentrations of interleukin-8 throughout the first 24 hrs of admission, in contrast to the normal physiologic attenuation of migration seen in neutrophils isolated from normal laboratory volunteers.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_20363841", "pmid": "20363841", "task": "evidence_qa", "question": "Do symptoms predict COPD in smokers?", "context": "BACKGROUND: The US Preventive Services Task Force recommends against spirometry in the absence of symptoms. However, as much as 50% of COPD cases in the United States remain undiagnosed.\n\nMETHODS: Report of symptoms, smoking history, and spirometric data were collected from subjects screened for a work-related medical evaluation (N = 3,955). Prevalence of airflow obstruction and respiratory symptoms were assessed. Sensitivity, specificity, positive and negative predictive values, and relative risks of predicting symptoms and smoking history for COPD were calculated.\n\nRESULTS: Forty-four percent of smokers in our sample had airways obstruction (AO). Of these, 36% reported a diagnosis of or treatment for COPD. Odds ratio (95% CI) for AO with smoking (>or = 20 pack-years) was 3.73 (3.12- 4.45), 1.98 (1.73-2.27) for cough, 1.79 (1.55-2.08) for dyspnea, 1.95 (1.70-2.34) for sputum, and 2.59 (2.26-2.97) for wheeze. Respiratory symptoms were reported by 92% of smokers with AO, 86% smokers with restriction, 76% smokers with normal spirometry, and 73% of nonsmokers. Sensitivity (92% vs 90%), specificity (19% vs 22%), positive (47% vs 40%) and negative (75% vs 80%) predictive values for the presence of one or more symptoms were similar between smokers and all subjects.", "ground_truth": {"decision": "no", "answer": "COPD is underdiagnosed in the United States. Symptoms are frequent in subjects with AO and increase their risk for COPD, but add little beyond age and smoking history to the predictive value of spirometry. In view of the high prevalence of symptoms and their poor predictive value, a simpler and more effective approach would be to screen older smokers.", "evidence": ["Forty-four percent of smokers in our sample had airways obstruction (AO). Of these, 36% reported a diagnosis of or treatment for COPD. Odds ratio (95% CI) for AO with smoking (>or = 20 pack-years) was 3.73 (3.12- 4.45), 1.98 (1.73-2.27) for cough, 1.79 (1.55-2.08) for dyspnea, 1.95 (1.70-2.34) for sputum, and 2.59 (2.26-2.97) for wheeze. Respiratory symptoms were reported by 92% of smokers with AO, 86% smokers with restriction, 76% smokers with normal spirometry, and 73% of nonsmokers. Sensitivity (92% vs 90%), specificity (19% vs 22%), positive (47% vs 40%) and negative (75% vs 80%) predictive values for the presence of one or more symptoms were similar between smokers and all subjects."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: The US Preventive Services Task Force recommends against spirometry in the absence of symptoms. However, as much as 50% of COPD cases in the United States remain undiagnosed.\n\nMETHODS: Report of symptoms, smoking history, and spirometric data were collected from subjects screened for a work-related medical evaluation (N = 3,955). Prevalence of airflow obstruction and respiratory symptoms were assessed. Sensitivity, specificity, positive and negative predictive values, and relative risks of predicting symptoms and smoking history for COPD were calculated.\n\nRESULTS: Forty-four percent of smokers in our sample had airways obstruction (AO). Of these, 36% reported a diagnosis of or treatment for COPD. Odds ratio (95% CI) for AO with smoking (>or = 20 pack-years) was 3.73 (3.12- 4.45), 1.98 (1.73-2.27) for cough, 1.79 (1.55-2.08) for dyspnea, 1.95 (1.70-2.34) for sputum, and 2.59 (2.26-2.97) for wheeze. Respiratory symptoms were reported by 92% of smokers with AO, 86% smokers with restriction, 76% smokers with normal spirometry, and 73% of nonsmokers. Sensitivity (92% vs 90%), specificity (19% vs 22%), positive (47% vs 40%) and negative (75% vs 80%) predictive values for the presence of one or more symptoms were similar between smokers and all subjects.\n\nBiomedical Question:\nDo symptoms predict COPD in smokers?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"COPD is underdiagnosed in the United States. Symptoms are frequent in subjects with AO and increase their risk for COPD, but add little beyond age and smoking history to the predictive value of spirometry. In view of the high prevalence of symptoms and their poor predictive value, a simpler and more effective approach would be to screen older smokers.\",\n  \"evidence\": [\n    \"Forty-four percent of smokers in our sample had airways obstruction (AO). Of these, 36% reported a diagnosis of or treatment for COPD. Odds ratio (95% CI) for AO with smoking (>or = 20 pack-years) was 3.73 (3.12- 4.45), 1.98 (1.73-2.27) for cough, 1.79 (1.55-2.08) for dyspnea, 1.95 (1.70-2.34) for sputum, and 2.59 (2.26-2.97) for wheeze. Respiratory symptoms were reported by 92% of smokers with AO, 86% smokers with restriction, 76% smokers with normal spirometry, and 73% of nonsmokers. Sensitivity (92% vs 90%), specificity (19% vs 22%), positive (47% vs 40%) and negative (75% vs 80%) predictive values for the presence of one or more symptoms were similar between smokers and all subjects.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_19694846", "pmid": "19694846", "task": "evidence_qa", "question": "Does self-efficacy mediate the relationship between transformational leadership behaviours and healthcare workers' sleep quality?", "context": "BACKGROUND: Although there is evidence for the influential role of transformational leadership on health outcomes, researchers have used either attitude outcomes (e.g. job satisfaction) or softer health measures, such as general well-being. Specific measures of well-being such as sleep quality have not been used, despite its association with working conditions.\n\nMETHODS: A longitudinal design was used to collect data from Danish healthcare workers at time 1 in 2005 (n = 447) and 18 months later at time 2 in 2007 (n = 274). Structural equation modelling was used to investigate the relationships between transformational leadership, self-efficacy and sleep quality at both time points independently (cross-sectionally) and longitudinally.\n\nRESULTS: For all constructs, time 2 measures were influenced by the baseline level. Direct relationships between transformational leadership and sleep quality were found. This relationship was negative cross-sectionally at both time points, but positive between baseline and follow-up. The relationship between leadership and employees' sleep quality was not mediated by employees' self-efficacy.", "ground_truth": {"decision": "maybe", "answer": "Our results indicate that training managers in transformational leadership behaviours may have a positive impact on healthcare workers' health over time. However, more research is needed to examine the mechanisms by which transformational leadership brings about improved sleep quality; self-efficacy was not found to be the explanation.", "evidence": ["For all constructs, time 2 measures were influenced by the baseline level. Direct relationships between transformational leadership and sleep quality were found. This relationship was negative cross-sectionally at both time points, but positive between baseline and follow-up. The relationship between leadership and employees' sleep quality was not mediated by employees' self-efficacy."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Although there is evidence for the influential role of transformational leadership on health outcomes, researchers have used either attitude outcomes (e.g. job satisfaction) or softer health measures, such as general well-being. Specific measures of well-being such as sleep quality have not been used, despite its association with working conditions.\n\nMETHODS: A longitudinal design was used to collect data from Danish healthcare workers at time 1 in 2005 (n = 447) and 18 months later at time 2 in 2007 (n = 274). Structural equation modelling was used to investigate the relationships between transformational leadership, self-efficacy and sleep quality at both time points independently (cross-sectionally) and longitudinally.\n\nRESULTS: For all constructs, time 2 measures were influenced by the baseline level. Direct relationships between transformational leadership and sleep quality were found. This relationship was negative cross-sectionally at both time points, but positive between baseline and follow-up. The relationship between leadership and employees' sleep quality was not mediated by employees' self-efficacy.\n\nBiomedical Question:\nDoes self-efficacy mediate the relationship between transformational leadership behaviours and healthcare workers' sleep quality?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"Our results indicate that training managers in transformational leadership behaviours may have a positive impact on healthcare workers' health over time. However, more research is needed to examine the mechanisms by which transformational leadership brings about improved sleep quality; self-efficacy was not found to be the explanation.\",\n  \"evidence\": [\n    \"For all constructs, time 2 measures were influenced by the baseline level. Direct relationships between transformational leadership and sleep quality were found. This relationship was negative cross-sectionally at both time points, but positive between baseline and follow-up. The relationship between leadership and employees' sleep quality was not mediated by employees' self-efficacy.\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_23598835", "pmid": "23598835", "task": "evidence_qa", "question": "Is severe pain immediately after spinal augmentation a predictor of long-term outcomes?", "context": "BACKGROUND AND PURPOSE: Severe, immediate postprocedural pain and the need for analgesics after vertebroplasty can be a discouraging experience for patients and caregivers. The goal of this study was to investigate whether the presence of severe pain immediately after vertebroplasty predicts short- and long-term pain relief.\n\nMATERIALS AND METHODS: A chart review was performed to categorize patients regarding pain severity and analgesic usage immediately after vertebroplasty (<4 h). \"Severe\" pain was defined as at least 8 of 10 with the 10-point VAS. Outcomes were pain severity and pain medication score and usage at 1 month and 1 year after vertebroplasty. Outcomes and clinical characteristics were compared between groups by using the Wilcoxon signed-rank test and the Fisher exact test.\n\nRESULTS: Of the 429 vertebroplasty procedures identified, 69 (16%) were associated with severe pain, and 133 (31%) were associated with analgesic administration immediately after the procedure. The group experiencing severe pain had higher preprocedure median VAS rest pain scores (5 [IQR, 2-7]) and activitypain scores (10 [IQR, 8-10]) compared with patients who did not experience severe pain (3 [IQR, 1-6]; P = .0208, and 8 [IQR, 7-10]; P = .0263, respectively). At 1 month postprocedure, VAS rest and activity pain scores were similar between the severe pain group and the nonsevere pain group (P = .16 and P = .25, respectively) and between the group receiving pain medication and the group not receiving pain medication (P = .25 and P = .67, respectively). This similarity continued for 1 year after the procedure. Analgesic usage was similar among all groups at 1 year postprocedure.", "ground_truth": {"decision": "no", "answer": "Patients with severe pain immediately after vertebroplasty have similar long-term outcomes compared with patients without severe pain.", "evidence": ["Of the 429 vertebroplasty procedures identified, 69 (16%) were associated with severe pain, and 133 (31%) were associated with analgesic administration immediately after the procedure. The group experiencing severe pain had higher preprocedure median VAS rest pain scores (5 [IQR, 2-7]) and activitypain scores (10 [IQR, 8-10]) compared with patients who did not experience severe pain (3 [IQR, 1-6]; P = .0208, and 8 [IQR, 7-10]; P = .0263, respectively). At 1 month postprocedure, VAS rest and activity pain scores were similar between the severe pain group and the nonsevere pain group (P = .16 and P = .25, respectively) and between the group receiving pain medication and the group not receiving pain medication (P = .25 and P = .67, respectively). This similarity continued for 1 year after the procedure. Analgesic usage was similar among all groups at 1 year postprocedure."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND AND PURPOSE: Severe, immediate postprocedural pain and the need for analgesics after vertebroplasty can be a discouraging experience for patients and caregivers. The goal of this study was to investigate whether the presence of severe pain immediately after vertebroplasty predicts short- and long-term pain relief.\n\nMATERIALS AND METHODS: A chart review was performed to categorize patients regarding pain severity and analgesic usage immediately after vertebroplasty (<4 h). \"Severe\" pain was defined as at least 8 of 10 with the 10-point VAS. Outcomes were pain severity and pain medication score and usage at 1 month and 1 year after vertebroplasty. Outcomes and clinical characteristics were compared between groups by using the Wilcoxon signed-rank test and the Fisher exact test.\n\nRESULTS: Of the 429 vertebroplasty procedures identified, 69 (16%) were associated with severe pain, and 133 (31%) were associated with analgesic administration immediately after the procedure. The group experiencing severe pain had higher preprocedure median VAS rest pain scores (5 [IQR, 2-7]) and activitypain scores (10 [IQR, 8-10]) compared with patients who did not experience severe pain (3 [IQR, 1-6]; P = .0208, and 8 [IQR, 7-10]; P = .0263, respectively). At 1 month postprocedure, VAS rest and activity pain scores were similar between the severe pain group and the nonsevere pain group (P = .16 and P = .25, respectively) and between the group receiving pain medication and the group not receiving pain medication (P = .25 and P = .67, respectively). This similarity continued for 1 year after the procedure. Analgesic usage was similar among all groups at 1 year postprocedure.\n\nBiomedical Question:\nIs severe pain immediately after spinal augmentation a predictor of long-term outcomes?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"Patients with severe pain immediately after vertebroplasty have similar long-term outcomes compared with patients without severe pain.\",\n  \"evidence\": [\n    \"Of the 429 vertebroplasty procedures identified, 69 (16%) were associated with severe pain, and 133 (31%) were associated with analgesic administration immediately after the procedure. The group experiencing severe pain had higher preprocedure median VAS rest pain scores (5 [IQR, 2-7]) and activitypain scores (10 [IQR, 8-10]) compared with patients who did not experience severe pain (3 [IQR, 1-6]; P = .0208, and 8 [IQR, 7-10]; P = .0263, respectively). At 1 month postprocedure, VAS rest and activity pain scores were similar between the severe pain group and the nonsevere pain group (P = .16 and P = .25, respectively) and between the group receiving pain medication and the group not receiving pain medication (P = .25 and P = .67, respectively). This similarity continued for 1 year after the procedure. Analgesic usage was similar among all groups at 1 year postprocedure.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_12094116", "pmid": "12094116", "task": "evidence_qa", "question": "Is muscle power related to running speed with changes of direction?", "context": "BACKGROUND: The purpose of this study was to identify the relationships between leg muscle power and sprinting speed with changes of direction.\n\nEXPERIMENTAL DESIGN: the study was designed to describe relationships between physical qualities and a component of sports performance.\n\nSETTING: testing was conducted in an indoor sports hall and a biomechanics laboratory.\n\nPARTICIPANTS: 15 male participants were required to be free of injury and have recent experience competing in sports involving sprints with changes of direction.\n\nMEASURES: subjects were timed in 8 m sprints in a straight line and with various changes of direction. They were also tested for bilateral and unilateral leg extensor muscle concentric power output by an isokinetic squat and reactive strength by a drop jump.\n\nRESULTS: The correlations between concentric power and straight sprinting speed were non-significant whereas the relationships between reactive strength and straight speed were statistically significant. Correlations between muscle power and speed while changing direction were generally low and non-significant for concentric leg power with some moderate and significant (p<0.05) coefficients found for reactive strength. The participants who turned faster to one side tended to have a reactive strength dominance in the leg responsible for the push-off action.", "ground_truth": {"decision": "yes", "answer": "The relationships between leg muscle power and change-of-direction speed were not consistent. Reactive strength as measured by the drop jump appears to have some importance for lateral change-of-direction speed, possibly because of similar push-off actions. It was concluded that reactive strength of the leg extensor muscles has some importance in change-of-direction performance but the other technical and perceptual factors than influence agility performance should also be considered.", "evidence": ["The correlations between concentric power and straight sprinting speed were non-significant whereas the relationships between reactive strength and straight speed were statistically significant. Correlations between muscle power and speed while changing direction were generally low and non-significant for concentric leg power with some moderate and significant (p<0.05) coefficients found for reactive strength. The participants who turned faster to one side tended to have a reactive strength dominance in the leg responsible for the push-off action."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: The purpose of this study was to identify the relationships between leg muscle power and sprinting speed with changes of direction.\n\nEXPERIMENTAL DESIGN: the study was designed to describe relationships between physical qualities and a component of sports performance.\n\nSETTING: testing was conducted in an indoor sports hall and a biomechanics laboratory.\n\nPARTICIPANTS: 15 male participants were required to be free of injury and have recent experience competing in sports involving sprints with changes of direction.\n\nMEASURES: subjects were timed in 8 m sprints in a straight line and with various changes of direction. They were also tested for bilateral and unilateral leg extensor muscle concentric power output by an isokinetic squat and reactive strength by a drop jump.\n\nRESULTS: The correlations between concentric power and straight sprinting speed were non-significant whereas the relationships between reactive strength and straight speed were statistically significant. Correlations between muscle power and speed while changing direction were generally low and non-significant for concentric leg power with some moderate and significant (p<0.05) coefficients found for reactive strength. The participants who turned faster to one side tended to have a reactive strength dominance in the leg responsible for the push-off action.\n\nBiomedical Question:\nIs muscle power related to running speed with changes of direction?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"The relationships between leg muscle power and change-of-direction speed were not consistent. Reactive strength as measured by the drop jump appears to have some importance for lateral change-of-direction speed, possibly because of similar push-off actions. It was concluded that reactive strength of the leg extensor muscles has some importance in change-of-direction performance but the other technical and perceptual factors than influence agility performance should also be considered.\",\n  \"evidence\": [\n    \"The correlations between concentric power and straight sprinting speed were non-significant whereas the relationships between reactive strength and straight speed were statistically significant. Correlations between muscle power and speed while changing direction were generally low and non-significant for concentric leg power with some moderate and significant (p<0.05) coefficients found for reactive strength. The participants who turned faster to one side tended to have a reactive strength dominance in the leg responsible for the push-off action.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_19468282", "pmid": "19468282", "task": "evidence_qa", "question": "Is determination between complete and incomplete traumatic spinal cord injury clinically relevant?", "context": "STUDY DESIGN: Prospective multicenter longitudinal cohort study.\n\nOBJECTIVE: To validate the prognostic value of the acute phase sacral sparing measurements with regard to chronic phase-independent ambulation in patients with traumatic spinal cord injury (SCI).\n\nSETTING: European Multicenter Study of Human Spinal Cord Injury (EM-SCI).\n\nMETHODS: In 432 patients, acute phase (0-15 days) American Spinal Injury Association (ASIA)/International Spinal Cord Society neurological standard scale (AIS) grades, ASIA sacral sparing measurements, which are S4-5 light touch (LT), S4-5 pin prick (PP), anal sensation and voluntary anal contraction; and chronic phase (6 or 12 months) indoor mobility Spinal Cord Independence Measure (SCIM) measurements were analyzed. Calculations of positive and negative predictive values (PPV/NPV) as well as univariate and multivariate logistic regressions were performed in all four sacral sparing criteria. The area under the receiver-operating characteristic curve (AUC) ratios of all regression equations was calculated.\n\nRESULTS: To achieve independent ambulation 1-year post injury, a normal S4-5 PP score showed the best PPV (96.5%, P<0.001, 95% confidence interval (95% CI): 87.9-99.6). Best NPV was reported in the S4-5 LT score (91.7%, P<0.001, 95% CI: 81.6-97.2). The use of the combination of only voluntary anal contraction and the S4-5 LT and PP sensory scores (AUC: 0.906, P<0.001, 95% CI: 0.871-0.941) showed significantly better (P<0.001, 95% CI: 0.038-0.128) discriminating results in prognosticating 1-year independent ambulation than with the use of currently used distinction between complete and incomplete SCI (AUC: 0.823, P<0.001, 95% CI: 0.781-0.864).", "ground_truth": {"decision": "maybe", "answer": "Out of the four sacral sparing criteria, the acute phase anal sensory score measurements do not contribute significantly to the prognosis of independent ambulation. The combination of the acute phase voluntary anal contraction and the S4-5 LT and PP scores, predicts significantly better chronic phase-independent ambulation outcomes than the currently used distinction between complete and incomplete SCI.", "evidence": ["To achieve independent ambulation 1-year post injury, a normal S4-5 PP score showed the best PPV (96.5%, P<0.001, 95% confidence interval (95% CI): 87.9-99.6). Best NPV was reported in the S4-5 LT score (91.7%, P<0.001, 95% CI: 81.6-97.2). The use of the combination of only voluntary anal contraction and the S4-5 LT and PP sensory scores (AUC: 0.906, P<0.001, 95% CI: 0.871-0.941) showed significantly better (P<0.001, 95% CI: 0.038-0.128) discriminating results in prognosticating 1-year independent ambulation than with the use of currently used distinction between complete and incomplete SCI (AUC: 0.823, P<0.001, 95% CI: 0.781-0.864)."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nSTUDY DESIGN: Prospective multicenter longitudinal cohort study.\n\nOBJECTIVE: To validate the prognostic value of the acute phase sacral sparing measurements with regard to chronic phase-independent ambulation in patients with traumatic spinal cord injury (SCI).\n\nSETTING: European Multicenter Study of Human Spinal Cord Injury (EM-SCI).\n\nMETHODS: In 432 patients, acute phase (0-15 days) American Spinal Injury Association (ASIA)/International Spinal Cord Society neurological standard scale (AIS) grades, ASIA sacral sparing measurements, which are S4-5 light touch (LT), S4-5 pin prick (PP), anal sensation and voluntary anal contraction; and chronic phase (6 or 12 months) indoor mobility Spinal Cord Independence Measure (SCIM) measurements were analyzed. Calculations of positive and negative predictive values (PPV/NPV) as well as univariate and multivariate logistic regressions were performed in all four sacral sparing criteria. The area under the receiver-operating characteristic curve (AUC) ratios of all regression equations was calculated.\n\nRESULTS: To achieve independent ambulation 1-year post injury, a normal S4-5 PP score showed the best PPV (96.5%, P<0.001, 95% confidence interval (95% CI): 87.9-99.6). Best NPV was reported in the S4-5 LT score (91.7%, P<0.001, 95% CI: 81.6-97.2). The use of the combination of only voluntary anal contraction and the S4-5 LT and PP sensory scores (AUC: 0.906, P<0.001, 95% CI: 0.871-0.941) showed significantly better (P<0.001, 95% CI: 0.038-0.128) discriminating results in prognosticating 1-year independent ambulation than with the use of currently used distinction between complete and incomplete SCI (AUC: 0.823, P<0.001, 95% CI: 0.781-0.864).\n\nBiomedical Question:\nIs determination between complete and incomplete traumatic spinal cord injury clinically relevant?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"Out of the four sacral sparing criteria, the acute phase anal sensory score measurements do not contribute significantly to the prognosis of independent ambulation. The combination of the acute phase voluntary anal contraction and the S4-5 LT and PP scores, predicts significantly better chronic phase-independent ambulation outcomes than the currently used distinction between complete and incomplete SCI.\",\n  \"evidence\": [\n    \"To achieve independent ambulation 1-year post injury, a normal S4-5 PP score showed the best PPV (96.5%, P<0.001, 95% confidence interval (95% CI): 87.9-99.6). Best NPV was reported in the S4-5 LT score (91.7%, P<0.001, 95% CI: 81.6-97.2). The use of the combination of only voluntary anal contraction and the S4-5 LT and PP sensory scores (AUC: 0.906, P<0.001, 95% CI: 0.871-0.941) showed significantly better (P<0.001, 95% CI: 0.038-0.128) discriminating results in prognosticating 1-year independent ambulation than with the use of currently used distinction between complete and incomplete SCI (AUC: 0.823, P<0.001, 95% CI: 0.781-0.864).\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_12377809", "pmid": "12377809", "task": "evidence_qa", "question": "Is anorectal endosonography valuable in dyschesia?", "context": "AIMS: Dyschesia can be provoked by inappropriate defecation movements. The aim of this prospective study was to demonstrate dysfunction of the anal sphincter and/or the musculus (m.) puborectalis in patients with dyschesia using anorectal endosonography.\n\nMETHODS: Twenty consecutive patients with a medical history of dyschesia and a control group of 20 healthy subjects underwent linear anorectal endosonography (Toshiba models IUV 5060 and PVL-625 RT). In both groups, the dimensions of the anal sphincter and the m. puborectalis were measured at rest, and during voluntary squeezing and straining. Statistical analysis was performed within and between the two groups.\n\nRESULTS: The anal sphincter became paradoxically shorter and/or thicker during straining (versus the resting state) in 85% of patients but in only 35% of control subjects. Changes in sphincter length were statistically significantly different (p<0.01, chi(2) test) in patients compared with control subjects. The m. puborectalis became paradoxically shorter and/or thicker during straining in 80% of patients but in only 30% of controls. Both the changes in length and thickness of the m. puborectalis were significantly different (p<0.01, chi(2) test) in patients versus control subjects.", "ground_truth": {"decision": "yes", "answer": "Linear anorectal endosonography demonstrated incomplete or even absent relaxation of the anal sphincter and the m. puborectalis during a defecation movement in the majority of our patients with dyschesia. This study highlights the value of this elegant ultrasonographic technique in the diagnosis of \"pelvic floor dyssynergia\" or \"anismus\".", "evidence": ["The anal sphincter became paradoxically shorter and/or thicker during straining (versus the resting state) in 85% of patients but in only 35% of control subjects. Changes in sphincter length were statistically significantly different (p<0.01, chi(2) test) in patients compared with control subjects. The m. puborectalis became paradoxically shorter and/or thicker during straining in 80% of patients but in only 30% of controls. Both the changes in length and thickness of the m. puborectalis were significantly different (p<0.01, chi(2) test) in patients versus control subjects."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nAIMS: Dyschesia can be provoked by inappropriate defecation movements. The aim of this prospective study was to demonstrate dysfunction of the anal sphincter and/or the musculus (m.) puborectalis in patients with dyschesia using anorectal endosonography.\n\nMETHODS: Twenty consecutive patients with a medical history of dyschesia and a control group of 20 healthy subjects underwent linear anorectal endosonography (Toshiba models IUV 5060 and PVL-625 RT). In both groups, the dimensions of the anal sphincter and the m. puborectalis were measured at rest, and during voluntary squeezing and straining. Statistical analysis was performed within and between the two groups.\n\nRESULTS: The anal sphincter became paradoxically shorter and/or thicker during straining (versus the resting state) in 85% of patients but in only 35% of control subjects. Changes in sphincter length were statistically significantly different (p<0.01, chi(2) test) in patients compared with control subjects. The m. puborectalis became paradoxically shorter and/or thicker during straining in 80% of patients but in only 30% of controls. Both the changes in length and thickness of the m. puborectalis were significantly different (p<0.01, chi(2) test) in patients versus control subjects.\n\nBiomedical Question:\nIs anorectal endosonography valuable in dyschesia?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Linear anorectal endosonography demonstrated incomplete or even absent relaxation of the anal sphincter and the m. puborectalis during a defecation movement in the majority of our patients with dyschesia. This study highlights the value of this elegant ultrasonographic technique in the diagnosis of \\\"pelvic floor dyssynergia\\\" or \\\"anismus\\\".\",\n  \"evidence\": [\n    \"The anal sphincter became paradoxically shorter and/or thicker during straining (versus the resting state) in 85% of patients but in only 35% of control subjects. Changes in sphincter length were statistically significantly different (p<0.01, chi(2) test) in patients compared with control subjects. The m. puborectalis became paradoxically shorter and/or thicker during straining in 80% of patients but in only 30% of controls. Both the changes in length and thickness of the m. puborectalis were significantly different (p<0.01, chi(2) test) in patients versus control subjects.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_20608141", "pmid": "20608141", "task": "evidence_qa", "question": "PSA repeatedly fluctuating levels are reassuring enough to avoid biopsy?", "context": "INTRODUCTION: Prostate-specific antigen (PSA) levels can show wide fluctuations when repeatedly measured. Here we investigatewd if: (a) biopsy timing influences the prostate cancer (PC) detection rate in patients with fluctuating PSA (flu-PSA) in comparison with patients with steadily increasing PSA (si-PSA); (b) PSA slope estimated in patients with flu-PSA predicts a different risk of cancer detection; (c) flu-PSA and si-PSA patients develop PC in topographically different sites; (d) the behaviour of pre-operative PSA is an expression of a disease with defferent characteristics to the following radical prostatectomy.\n\nMETHODS: The study involved 211 patients who underwent at least a second biopsy after a first negative prostate biopsy. PSA Slope, PSA velocity (PSAV) and PSA doubling time (PSADT) were estimated. Flu-PSA level was defined as a PSA series with at least one PSA value lower than the one immediately preceding it.\n\nRESULTS: 82 patients had flu-PSA levels and 129 si-PSA levels. There were no significant differences between the two groups in terms of cancer detection, clinical or pathological stage, but the si-PSA group with cancer had a higher Gleason score. No difference was found for PSA Slope between flu-PSA patients with cancer and those without.", "ground_truth": {"decision": "no", "answer": "Our study demonstrates no difference in PC detection rate at repeat biopsy between patients with flu or si-PSA levels. PSA Slope, PSAV and PSADT were not found helpful tools in cancer detection.", "evidence": ["82 patients had flu-PSA levels and 129 si-PSA levels. There were no significant differences between the two groups in terms of cancer detection, clinical or pathological stage, but the si-PSA group with cancer had a higher Gleason score. No difference was found for PSA Slope between flu-PSA patients with cancer and those without."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nINTRODUCTION: Prostate-specific antigen (PSA) levels can show wide fluctuations when repeatedly measured. Here we investigatewd if: (a) biopsy timing influences the prostate cancer (PC) detection rate in patients with fluctuating PSA (flu-PSA) in comparison with patients with steadily increasing PSA (si-PSA); (b) PSA slope estimated in patients with flu-PSA predicts a different risk of cancer detection; (c) flu-PSA and si-PSA patients develop PC in topographically different sites; (d) the behaviour of pre-operative PSA is an expression of a disease with defferent characteristics to the following radical prostatectomy.\n\nMETHODS: The study involved 211 patients who underwent at least a second biopsy after a first negative prostate biopsy. PSA Slope, PSA velocity (PSAV) and PSA doubling time (PSADT) were estimated. Flu-PSA level was defined as a PSA series with at least one PSA value lower than the one immediately preceding it.\n\nRESULTS: 82 patients had flu-PSA levels and 129 si-PSA levels. There were no significant differences between the two groups in terms of cancer detection, clinical or pathological stage, but the si-PSA group with cancer had a higher Gleason score. No difference was found for PSA Slope between flu-PSA patients with cancer and those without.\n\nBiomedical Question:\nPSA repeatedly fluctuating levels are reassuring enough to avoid biopsy?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"Our study demonstrates no difference in PC detection rate at repeat biopsy between patients with flu or si-PSA levels. PSA Slope, PSAV and PSADT were not found helpful tools in cancer detection.\",\n  \"evidence\": [\n    \"82 patients had flu-PSA levels and 129 si-PSA levels. There were no significant differences between the two groups in terms of cancer detection, clinical or pathological stage, but the si-PSA group with cancer had a higher Gleason score. No difference was found for PSA Slope between flu-PSA patients with cancer and those without.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_20674150", "pmid": "20674150", "task": "evidence_qa", "question": "Validation of the 2009 TNM version in a large multi-institutional cohort of patients treated for renal cell carcinoma: are further improvements needed?", "context": "BACKGROUND: A new edition of the TNM was recently released that includes modifications for the staging system of kidney cancers. Specifically, T2 cancers were subclassified into T2a and T2b (<or =10 cm vs>10 cm), tumors with renal vein involvement or perinephric fat involvement were classified as T3a cancers, and those with adrenal involvement were classified as T4 cancers.\n\nOBJECTIVE: Our aim was to validate the recently released edition of the TNM staging system for primary tumor classification in kidney cancer.\n\nDESIGN, SETTING, AND PARTICIPANTS: Our multicenter retrospective study consisted of 5339 patients treated in 16 academic Italian centers.\n\nINTERVENTION: Patients underwent either radical or partial nephrectomy.\n\nMEASUREMENTS: Univariable and multivariable Cox regression models addressed cancer-specific survival (CSS) after surgery.\n\nRESULTS AND LIMITATIONS: In the study, 1897 patients (35.5%) were classified as pT1a, 1453 (27%) as pT1b, 437 (8%) as pT2a, 153 (3%) as pT2b, 1059 (20%) as pT3a, 117 (2%) as pT3b, 26 (0.5%) as pT3c, and 197 (4%) as pT4. At a median follow-up of 42 mo, 786 (15%) had died of disease. In univariable analysis, patients with pT2b and pT3a tumors had similar CSS, as did patients with pT3c and pT4 tumors. Moreover, both pT3a and pT3b stages included patients with heterogeneous outcomes. In multivariable analysis, the novel classification of the primary tumor was a powerful independent predictor of CSS (p for trend<0.0001). However, the substratification of pT1 tumors did not retain an independent predictive role. The major limitations of the study are retrospective design, lack of central pathologic review, and the small number of patients included in some substages.", "ground_truth": {"decision": "yes", "answer": "The recently released seventh edition of the primary tumor staging system for kidney tumors is a powerful predictor of CSS. However, some of the substages identified by the classification have overlapping prognoses, and other substages include patients with heterogeneous outcomes. The few modifications included in this edition may have not resolved the most critical issues in the previous version.", "evidence": ["In the study, 1897 patients (35.5%) were classified as pT1a, 1453 (27%) as pT1b, 437 (8%) as pT2a, 153 (3%) as pT2b, 1059 (20%) as pT3a, 117 (2%) as pT3b, 26 (0.5%) as pT3c, and 197 (4%) as pT4. At a median follow-up of 42 mo, 786 (15%) had died of disease. In univariable analysis, patients with pT2b and pT3a tumors had similar CSS, as did patients with pT3c and pT4 tumors. Moreover, both pT3a and pT3b stages included patients with heterogeneous outcomes. In multivariable analysis, the novel classification of the primary tumor was a powerful independent predictor of CSS (p for trend<0.0001). However, the substratification of pT1 tumors did not retain an independent predictive role. The major limitations of the study are retrospective design, lack of central pathologic review, and the small number of patients included in some substages."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: A new edition of the TNM was recently released that includes modifications for the staging system of kidney cancers. Specifically, T2 cancers were subclassified into T2a and T2b (<or =10 cm vs>10 cm), tumors with renal vein involvement or perinephric fat involvement were classified as T3a cancers, and those with adrenal involvement were classified as T4 cancers.\n\nOBJECTIVE: Our aim was to validate the recently released edition of the TNM staging system for primary tumor classification in kidney cancer.\n\nDESIGN, SETTING, AND PARTICIPANTS: Our multicenter retrospective study consisted of 5339 patients treated in 16 academic Italian centers.\n\nINTERVENTION: Patients underwent either radical or partial nephrectomy.\n\nMEASUREMENTS: Univariable and multivariable Cox regression models addressed cancer-specific survival (CSS) after surgery.\n\nRESULTS AND LIMITATIONS: In the study, 1897 patients (35.5%) were classified as pT1a, 1453 (27%) as pT1b, 437 (8%) as pT2a, 153 (3%) as pT2b, 1059 (20%) as pT3a, 117 (2%) as pT3b, 26 (0.5%) as pT3c, and 197 (4%) as pT4. At a median follow-up of 42 mo, 786 (15%) had died of disease. In univariable analysis, patients with pT2b and pT3a tumors had similar CSS, as did patients with pT3c and pT4 tumors. Moreover, both pT3a and pT3b stages included patients with heterogeneous outcomes. In multivariable analysis, the novel classification of the primary tumor was a powerful independent predictor of CSS (p for trend<0.0001). However, the substratification of pT1 tumors did not retain an independent predictive role. The major limitations of the study are retrospective design, lack of central pathologic review, and the small number of patients included in some substages.\n\nBiomedical Question:\nValidation of the 2009 TNM version in a large multi-institutional cohort of patients treated for renal cell carcinoma: are further improvements needed?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"The recently released seventh edition of the primary tumor staging system for kidney tumors is a powerful predictor of CSS. However, some of the substages identified by the classification have overlapping prognoses, and other substages include patients with heterogeneous outcomes. The few modifications included in this edition may have not resolved the most critical issues in the previous version.\",\n  \"evidence\": [\n    \"In the study, 1897 patients (35.5%) were classified as pT1a, 1453 (27%) as pT1b, 437 (8%) as pT2a, 153 (3%) as pT2b, 1059 (20%) as pT3a, 117 (2%) as pT3b, 26 (0.5%) as pT3c, and 197 (4%) as pT4. At a median follow-up of 42 mo, 786 (15%) had died of disease. In univariable analysis, patients with pT2b and pT3a tumors had similar CSS, as did patients with pT3c and pT4 tumors. Moreover, both pT3a and pT3b stages included patients with heterogeneous outcomes. In multivariable analysis, the novel classification of the primary tumor was a powerful independent predictor of CSS (p for trend<0.0001). However, the substratification of pT1 tumors did not retain an independent predictive role. The major limitations of the study are retrospective design, lack of central pathologic review, and the small number of patients included in some substages.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_22540518", "pmid": "22540518", "task": "evidence_qa", "question": "Is micro-computed tomography reliable to determine the microstructure of the maxillary alveolar bone?", "context": "OBJECTIVES: To analyze the reliability of micro-computed tomography (micro-CT) to assess bone density and the microstructure of the maxillary bones at the alveolar process in human clinics by direct comparison with conventional stereologic-based histomorphometry.\n\nMATERIALS AND METHODS: Analysis of osseous microstructural variables including bone volumetric density (BV/TV) of 39 biopsies from the maxillary alveolar bone was performed by micro-CT. Conventional stereologic-based histomorphometry of 10 bone biopsies was performed by optic microscopy (OM) and low-vacuum surface electronic microscopy (SEM). Percentages of bone between micro-CT and conventional stereologic-based histomorphometry were compared.\n\nRESULTS: Significant positive correlations were observed between BV/TV and the percentage of bone (%Bone) analyzed by SEM (r = 0.933, P < 0.001), by toluidine blue staining OM (r = 0.950, P < 0.001) and by dark field OM (r = 0.667, P = 0.05). The high positive correlation coefficient between BV/TV and trabecular thickness illustrates that a value of BV/TV upper than 50% squares with a bone presenting most of their trabecules thicker than 0.2 mm. The high negative correlation between BV/TV and trabecular separation shows that values of BV/TV upper than 50% squares with a bone presenting most of their trabecules separated less than 0.3 mm each other.", "ground_truth": {"decision": "yes", "answer": "BV/TV assessed by micro-CT correlates with the percentage of bone assessed by conventional stereologic-based histomorphometry. Micro-CT is a reliable technique to determine the bone density and the microstructure of the maxillary alveolar bone at the site of dental implant insertion.", "evidence": ["Significant positive correlations were observed between BV/TV and the percentage of bone (%Bone) analyzed by SEM (r = 0.933, P < 0.001), by toluidine blue staining OM (r = 0.950, P < 0.001) and by dark field OM (r = 0.667, P = 0.05). The high positive correlation coefficient between BV/TV and trabecular thickness illustrates that a value of BV/TV upper than 50% squares with a bone presenting most of their trabecules thicker than 0.2 mm. The high negative correlation between BV/TV and trabecular separation shows that values of BV/TV upper than 50% squares with a bone presenting most of their trabecules separated less than 0.3 mm each other."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVES: To analyze the reliability of micro-computed tomography (micro-CT) to assess bone density and the microstructure of the maxillary bones at the alveolar process in human clinics by direct comparison with conventional stereologic-based histomorphometry.\n\nMATERIALS AND METHODS: Analysis of osseous microstructural variables including bone volumetric density (BV/TV) of 39 biopsies from the maxillary alveolar bone was performed by micro-CT. Conventional stereologic-based histomorphometry of 10 bone biopsies was performed by optic microscopy (OM) and low-vacuum surface electronic microscopy (SEM). Percentages of bone between micro-CT and conventional stereologic-based histomorphometry were compared.\n\nRESULTS: Significant positive correlations were observed between BV/TV and the percentage of bone (%Bone) analyzed by SEM (r = 0.933, P < 0.001), by toluidine blue staining OM (r = 0.950, P < 0.001) and by dark field OM (r = 0.667, P = 0.05). The high positive correlation coefficient between BV/TV and trabecular thickness illustrates that a value of BV/TV upper than 50% squares with a bone presenting most of their trabecules thicker than 0.2 mm. The high negative correlation between BV/TV and trabecular separation shows that values of BV/TV upper than 50% squares with a bone presenting most of their trabecules separated less than 0.3 mm each other.\n\nBiomedical Question:\nIs micro-computed tomography reliable to determine the microstructure of the maxillary alveolar bone?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"BV/TV assessed by micro-CT correlates with the percentage of bone assessed by conventional stereologic-based histomorphometry. Micro-CT is a reliable technique to determine the bone density and the microstructure of the maxillary alveolar bone at the site of dental implant insertion.\",\n  \"evidence\": [\n    \"Significant positive correlations were observed between BV/TV and the percentage of bone (%Bone) analyzed by SEM (r = 0.933, P < 0.001), by toluidine blue staining OM (r = 0.950, P < 0.001) and by dark field OM (r = 0.667, P = 0.05). The high positive correlation coefficient between BV/TV and trabecular thickness illustrates that a value of BV/TV upper than 50% squares with a bone presenting most of their trabecules thicker than 0.2 mm. The high negative correlation between BV/TV and trabecular separation shows that values of BV/TV upper than 50% squares with a bone presenting most of their trabecules separated less than 0.3 mm each other.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_21368683", "pmid": "21368683", "task": "evidence_qa", "question": "Are patients with serious mental illness more likely to be admitted to nursing homes with more deficiencies in care?", "context": "BACKGROUND: Patients diagnosed with serious mental illness (SMI) who qualify for nursing home placement tend to require high levels of both psychiatric and nursing care. However, it is unknown whether they are equally likely to be admitted to nursing homes with adequate quality of care compared with other patients.\n\nMETHODS: We analyzed a national cohort of more than 1.3 million new nursing home admissions in 2007 using the minimum data set. The total and healthcare-related deficiency citations for each facility were obtained from the Online Survey, Certification, and Reporting file. Bivariate and multivariate regression analyses determined the association of schizophrenia or bipolar disorder with admissions to facilities with higher deficiencies.\n\nRESULTS: Compared with other patients, patients with schizophrenia (n=23,767) tended to enter nursing homes with more total (13.3 vs. 11.2, P<0.001) and healthcare-related deficiencies (8.6 vs. 7.2, P<0.001); and patients with bipolar disorder (n=19,741) were more likely to enter facilities with more problematic care too (12.5 vs. 11.2, P<0.001 for total deficiencies; and 8.2 vs. 7.2, P<0.001 for healthcare-related deficiencies). After sequentially controlling for the within-county choice of facilities, patient characteristics, and facility covariates, the association of SMI with admitting to higher-deficiency nursing homes persisted.", "ground_truth": {"decision": "yes", "answer": "Patients diagnosed with schizophrenia or bipolar disorder (ie, SMI) were more likely than other patients to be admitted to nursing homes with higher deficiency citations for both overall quality and clinical care quality. Further research is necessary to understand the reasons behind the disparity in quality of nursing home care associated with SMI.", "evidence": ["Compared with other patients, patients with schizophrenia (n=23,767) tended to enter nursing homes with more total (13.3 vs. 11.2, P<0.001) and healthcare-related deficiencies (8.6 vs. 7.2, P<0.001); and patients with bipolar disorder (n=19,741) were more likely to enter facilities with more problematic care too (12.5 vs. 11.2, P<0.001 for total deficiencies; and 8.2 vs. 7.2, P<0.001 for healthcare-related deficiencies). After sequentially controlling for the within-county choice of facilities, patient characteristics, and facility covariates, the association of SMI with admitting to higher-deficiency nursing homes persisted."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Patients diagnosed with serious mental illness (SMI) who qualify for nursing home placement tend to require high levels of both psychiatric and nursing care. However, it is unknown whether they are equally likely to be admitted to nursing homes with adequate quality of care compared with other patients.\n\nMETHODS: We analyzed a national cohort of more than 1.3 million new nursing home admissions in 2007 using the minimum data set. The total and healthcare-related deficiency citations for each facility were obtained from the Online Survey, Certification, and Reporting file. Bivariate and multivariate regression analyses determined the association of schizophrenia or bipolar disorder with admissions to facilities with higher deficiencies.\n\nRESULTS: Compared with other patients, patients with schizophrenia (n=23,767) tended to enter nursing homes with more total (13.3 vs. 11.2, P<0.001) and healthcare-related deficiencies (8.6 vs. 7.2, P<0.001); and patients with bipolar disorder (n=19,741) were more likely to enter facilities with more problematic care too (12.5 vs. 11.2, P<0.001 for total deficiencies; and 8.2 vs. 7.2, P<0.001 for healthcare-related deficiencies). After sequentially controlling for the within-county choice of facilities, patient characteristics, and facility covariates, the association of SMI with admitting to higher-deficiency nursing homes persisted.\n\nBiomedical Question:\nAre patients with serious mental illness more likely to be admitted to nursing homes with more deficiencies in care?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Patients diagnosed with schizophrenia or bipolar disorder (ie, SMI) were more likely than other patients to be admitted to nursing homes with higher deficiency citations for both overall quality and clinical care quality. Further research is necessary to understand the reasons behind the disparity in quality of nursing home care associated with SMI.\",\n  \"evidence\": [\n    \"Compared with other patients, patients with schizophrenia (n=23,767) tended to enter nursing homes with more total (13.3 vs. 11.2, P<0.001) and healthcare-related deficiencies (8.6 vs. 7.2, P<0.001); and patients with bipolar disorder (n=19,741) were more likely to enter facilities with more problematic care too (12.5 vs. 11.2, P<0.001 for total deficiencies; and 8.2 vs. 7.2, P<0.001 for healthcare-related deficiencies). After sequentially controlling for the within-county choice of facilities, patient characteristics, and facility covariates, the association of SMI with admitting to higher-deficiency nursing homes persisted.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_9767546", "pmid": "9767546", "task": "evidence_qa", "question": "Autoxidation products of both carbohydrates and lipids are increased in uremic plasma: is there oxidative stress in uremia?", "context": "BACKGROUND: Advanced glycation end products (AGEs), formed by non-enzymatic glycation and oxidation (glycoxidation) reactions, have been implicated in the pathogenesis of several diseases, including normoglycemic uremia. AGE research in uremia has focused on the accumulation of carbohydrate-derived adducts generated by the Maillard reaction. Recent studies, however, have demonstrated that one AGE, the glycoxidation product carboxymethyllysine (CML), could be derived not only from carbohydrates but also from oxidation of polyunsaturated fatty acids in vitro, raising the possibility that both carbohydrate and lipid autoxidation might be increased in uremia.\n\nMETHODS: To address this hypothesis, we applied gas chromatography-mass spectrometry and high performance liquid chromatography to measure protein adducts formed in uremic plasma by reactions between carbonyl compounds and protein amino groups: pentosidine derived from carbohydrate-derived carbonyls, malondialdehyde (MDA)-lysine derived from lipid-derived carbonyls, and CML originating possibly from both sources.\n\nRESULTS: All three adducts were elevated in uremic plasma. Plasma CML levels were mainly (>95%) albumin bound. Their levels were not correlated with fructoselysine levels and were similar in diabetic and non-diabetic patients on hemodialysis, indicating that their increase was not driven by glucose. Pentosidine and MDA-lysine were also increased in plasma to the same extent in diabetic and non-diabetic hemodialysis patients. Statistical analysis indicated that plasma levels of CML correlated weakly (P<0.05) with those of pentosidine and MDA-lysine, but that pentosidine and MDA-lysine varied independently (P>0.5).", "ground_truth": {"decision": "yes", "answer": "These data suggest that the increased levels of AGEs in blood, and probably in tissues, reported in uremia implicate a broad derangement in non-enzymatic biochemistry involving alterations in autoxidation of both carbohydrates and lipids.", "evidence": ["All three adducts were elevated in uremic plasma. Plasma CML levels were mainly (>95%) albumin bound. Their levels were not correlated with fructoselysine levels and were similar in diabetic and non-diabetic patients on hemodialysis, indicating that their increase was not driven by glucose. Pentosidine and MDA-lysine were also increased in plasma to the same extent in diabetic and non-diabetic hemodialysis patients. Statistical analysis indicated that plasma levels of CML correlated weakly (P<0.05) with those of pentosidine and MDA-lysine, but that pentosidine and MDA-lysine varied independently (P>0.5)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Advanced glycation end products (AGEs), formed by non-enzymatic glycation and oxidation (glycoxidation) reactions, have been implicated in the pathogenesis of several diseases, including normoglycemic uremia. AGE research in uremia has focused on the accumulation of carbohydrate-derived adducts generated by the Maillard reaction. Recent studies, however, have demonstrated that one AGE, the glycoxidation product carboxymethyllysine (CML), could be derived not only from carbohydrates but also from oxidation of polyunsaturated fatty acids in vitro, raising the possibility that both carbohydrate and lipid autoxidation might be increased in uremia.\n\nMETHODS: To address this hypothesis, we applied gas chromatography-mass spectrometry and high performance liquid chromatography to measure protein adducts formed in uremic plasma by reactions between carbonyl compounds and protein amino groups: pentosidine derived from carbohydrate-derived carbonyls, malondialdehyde (MDA)-lysine derived from lipid-derived carbonyls, and CML originating possibly from both sources.\n\nRESULTS: All three adducts were elevated in uremic plasma. Plasma CML levels were mainly (>95%) albumin bound. Their levels were not correlated with fructoselysine levels and were similar in diabetic and non-diabetic patients on hemodialysis, indicating that their increase was not driven by glucose. Pentosidine and MDA-lysine were also increased in plasma to the same extent in diabetic and non-diabetic hemodialysis patients. Statistical analysis indicated that plasma levels of CML correlated weakly (P<0.05) with those of pentosidine and MDA-lysine, but that pentosidine and MDA-lysine varied independently (P>0.5).\n\nBiomedical Question:\nAutoxidation products of both carbohydrates and lipids are increased in uremic plasma: is there oxidative stress in uremia?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"These data suggest that the increased levels of AGEs in blood, and probably in tissues, reported in uremia implicate a broad derangement in non-enzymatic biochemistry involving alterations in autoxidation of both carbohydrates and lipids.\",\n  \"evidence\": [\n    \"All three adducts were elevated in uremic plasma. Plasma CML levels were mainly (>95%) albumin bound. Their levels were not correlated with fructoselysine levels and were similar in diabetic and non-diabetic patients on hemodialysis, indicating that their increase was not driven by glucose. Pentosidine and MDA-lysine were also increased in plasma to the same extent in diabetic and non-diabetic hemodialysis patients. Statistical analysis indicated that plasma levels of CML correlated weakly (P<0.05) with those of pentosidine and MDA-lysine, but that pentosidine and MDA-lysine varied independently (P>0.5).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_10575390", "pmid": "10575390", "task": "evidence_qa", "question": "Do follow-up recommendations for abnormal Papanicolaou smears influence patient adherence?", "context": "OBJECTIVE: To compare adherence to follow-up recommendations for colposcopy or repeated Papanicolaou (Pap) smears for women with previously abnormal Pap smear results.\n\nDESIGN: Retrospective cohort study.\n\nSETTING: Three northern California family planning clinics.\n\nPATIENTS: All women with abnormal Pap smear results referred for initial colposcopy and a random sample of those referred for repeated Pap smear. Medical records were located and reviewed for 90 of 107 women referred for colposcopy and 153 of 225 women referred for repeated Pap smears.\n\nINTERVENTION: Routine clinic protocols for follow-up--telephone call, letter, or certified letter--were applied without regard to the type of abnormality seen on a Pap smear or recommended examination.\n\nMAIN OUTCOME MEASURES: Documented adherence to follow-up within 8 months of an abnormal result. Attempts to contact the patients for follow-up, adherence to follow-up recommendations, and patient characteristics were abstracted from medical records. The probability of adherence to follow-up vs the number of follow-up attempts was modeled with survival analysis. Cox proportional hazards models were used to examine multivariate relationships related to adherence.\n\nRESULTS: The rate of overall adherence to follow-up recommendations was 56.0% (136/243). Adherence to a second colposcopy was not significantly different from that to a repeated Pap smear (odds ratio, 1.40; 95% confidence interval, 0.80-2.46). The use of as many as 3 patient reminders substantially improved adherence to follow-up. Women without insurance and women attending 1 of the 3 clinics were less likely to adhere to any follow-up recommendation (hazard ratio for no insurance, 0.43 [95% confidence interval, 0.20-0.93], and for clinic, 0.35 [95% confidence interval, 0.15-0.73]).", "ground_truth": {"decision": "no", "answer": "Adherence to follow-up was low in this family planning clinic population, no matter what type of follow-up was advised. Adherence was improved by the use of up to 3 reminders. Allocating resources to effective methods for improving adherence to follow-up of abnormal results may be more important than which follow-up procedure is recommended.", "evidence": ["The rate of overall adherence to follow-up recommendations was 56.0% (136/243). Adherence to a second colposcopy was not significantly different from that to a repeated Pap smear (odds ratio, 1.40; 95% confidence interval, 0.80-2.46). The use of as many as 3 patient reminders substantially improved adherence to follow-up. Women without insurance and women attending 1 of the 3 clinics were less likely to adhere to any follow-up recommendation (hazard ratio for no insurance, 0.43 [95% confidence interval, 0.20-0.93], and for clinic, 0.35 [95% confidence interval, 0.15-0.73])."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: To compare adherence to follow-up recommendations for colposcopy or repeated Papanicolaou (Pap) smears for women with previously abnormal Pap smear results.\n\nDESIGN: Retrospective cohort study.\n\nSETTING: Three northern California family planning clinics.\n\nPATIENTS: All women with abnormal Pap smear results referred for initial colposcopy and a random sample of those referred for repeated Pap smear. Medical records were located and reviewed for 90 of 107 women referred for colposcopy and 153 of 225 women referred for repeated Pap smears.\n\nINTERVENTION: Routine clinic protocols for follow-up--telephone call, letter, or certified letter--were applied without regard to the type of abnormality seen on a Pap smear or recommended examination.\n\nMAIN OUTCOME MEASURES: Documented adherence to follow-up within 8 months of an abnormal result. Attempts to contact the patients for follow-up, adherence to follow-up recommendations, and patient characteristics were abstracted from medical records. The probability of adherence to follow-up vs the number of follow-up attempts was modeled with survival analysis. Cox proportional hazards models were used to examine multivariate relationships related to adherence.\n\nRESULTS: The rate of overall adherence to follow-up recommendations was 56.0% (136/243). Adherence to a second colposcopy was not significantly different from that to a repeated Pap smear (odds ratio, 1.40; 95% confidence interval, 0.80-2.46). The use of as many as 3 patient reminders substantially improved adherence to follow-up. Women without insurance and women attending 1 of the 3 clinics were less likely to adhere to any follow-up recommendation (hazard ratio for no insurance, 0.43 [95% confidence interval, 0.20-0.93], and for clinic, 0.35 [95% confidence interval, 0.15-0.73]).\n\nBiomedical Question:\nDo follow-up recommendations for abnormal Papanicolaou smears influence patient adherence?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"Adherence to follow-up was low in this family planning clinic population, no matter what type of follow-up was advised. Adherence was improved by the use of up to 3 reminders. Allocating resources to effective methods for improving adherence to follow-up of abnormal results may be more important than which follow-up procedure is recommended.\",\n  \"evidence\": [\n    \"The rate of overall adherence to follow-up recommendations was 56.0% (136/243). Adherence to a second colposcopy was not significantly different from that to a repeated Pap smear (odds ratio, 1.40; 95% confidence interval, 0.80-2.46). The use of as many as 3 patient reminders substantially improved adherence to follow-up. Women without insurance and women attending 1 of the 3 clinics were less likely to adhere to any follow-up recommendation (hazard ratio for no insurance, 0.43 [95% confidence interval, 0.20-0.93], and for clinic, 0.35 [95% confidence interval, 0.15-0.73]).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_8111516", "pmid": "8111516", "task": "evidence_qa", "question": "Do family physicians make good sentinels for influenza?", "context": "OBJECTIVE: To determine whether volunteer family physician reports of the frequency of influenza-like illness (ILI) usefully supplement information from other influenza surveillance systems conducted by the Centers for Disease Control and Prevention.\n\nDESIGN: Evaluation of physician reports from five influenza surveillance seasons (1987-88 through 1991-92).\n\nSETTING: Family physician office practices in all regions of the United States.\n\nPARTICIPANTS: An average of 140 physicians during each of five influenza seasons.\n\nINTERVENTIONS: None.\n\nOUTCOME MEASURES: An office visit or hospitalization of a patient for ILI, defined as presence of fever (temperature>or = 37.8 degrees C) and cough, sore throat, or myalgia, along with the physician's clinical judgment of influenza. A subset of physicians collected specimens for confirmation of influenza virus by culture.\n\nRESULTS: Physicians attributed 81,408 (5%) of 1,672,542 office visits to ILI; 2754 (3%) patients with ILI were hospitalized. Persons 65 years of age and older accounted for 11% of visits for ILI and 43% of hospitalizations for ILI. In three of five seasons, physicians obtained influenza virus isolates from a greater proportion of specimens compared with those processed by World Health Organization laboratories (36% vs 12%). Influenza virus isolates from sentinel physicians peaked from 1 to 4 weeks earlier than those reported by World Health Organization laboratories. Physicians reported peak morbidity 1 to 4 weeks earlier than state and territorial health departments in four of five seasons and 2 to 5 weeks earlier than peak mortality reported by 121 cities during seasons with excess mortality associated with pneumonia and influenza.", "ground_truth": {"decision": "yes", "answer": "Family physicians provide sensitive, timely, and accurate community influenza morbidity data that complement data from other surveillance systems. This information enables monitoring of the type, timing, and intensity of influenza activity and can help health care workers implement prevention or control measures.", "evidence": ["Physicians attributed 81,408 (5%) of 1,672,542 office visits to ILI; 2754 (3%) patients with ILI were hospitalized. Persons 65 years of age and older accounted for 11% of visits for ILI and 43% of hospitalizations for ILI. In three of five seasons, physicians obtained influenza virus isolates from a greater proportion of specimens compared with those processed by World Health Organization laboratories (36% vs 12%). Influenza virus isolates from sentinel physicians peaked from 1 to 4 weeks earlier than those reported by World Health Organization laboratories. Physicians reported peak morbidity 1 to 4 weeks earlier than state and territorial health departments in four of five seasons and 2 to 5 weeks earlier than peak mortality reported by 121 cities during seasons with excess mortality associated with pneumonia and influenza."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: To determine whether volunteer family physician reports of the frequency of influenza-like illness (ILI) usefully supplement information from other influenza surveillance systems conducted by the Centers for Disease Control and Prevention.\n\nDESIGN: Evaluation of physician reports from five influenza surveillance seasons (1987-88 through 1991-92).\n\nSETTING: Family physician office practices in all regions of the United States.\n\nPARTICIPANTS: An average of 140 physicians during each of five influenza seasons.\n\nINTERVENTIONS: None.\n\nOUTCOME MEASURES: An office visit or hospitalization of a patient for ILI, defined as presence of fever (temperature>or = 37.8 degrees C) and cough, sore throat, or myalgia, along with the physician's clinical judgment of influenza. A subset of physicians collected specimens for confirmation of influenza virus by culture.\n\nRESULTS: Physicians attributed 81,408 (5%) of 1,672,542 office visits to ILI; 2754 (3%) patients with ILI were hospitalized. Persons 65 years of age and older accounted for 11% of visits for ILI and 43% of hospitalizations for ILI. In three of five seasons, physicians obtained influenza virus isolates from a greater proportion of specimens compared with those processed by World Health Organization laboratories (36% vs 12%). Influenza virus isolates from sentinel physicians peaked from 1 to 4 weeks earlier than those reported by World Health Organization laboratories. Physicians reported peak morbidity 1 to 4 weeks earlier than state and territorial health departments in four of five seasons and 2 to 5 weeks earlier than peak mortality reported by 121 cities during seasons with excess mortality associated with pneumonia and influenza.\n\nBiomedical Question:\nDo family physicians make good sentinels for influenza?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Family physicians provide sensitive, timely, and accurate community influenza morbidity data that complement data from other surveillance systems. This information enables monitoring of the type, timing, and intensity of influenza activity and can help health care workers implement prevention or control measures.\",\n  \"evidence\": [\n    \"Physicians attributed 81,408 (5%) of 1,672,542 office visits to ILI; 2754 (3%) patients with ILI were hospitalized. Persons 65 years of age and older accounted for 11% of visits for ILI and 43% of hospitalizations for ILI. In three of five seasons, physicians obtained influenza virus isolates from a greater proportion of specimens compared with those processed by World Health Organization laboratories (36% vs 12%). Influenza virus isolates from sentinel physicians peaked from 1 to 4 weeks earlier than those reported by World Health Organization laboratories. Physicians reported peak morbidity 1 to 4 weeks earlier than state and territorial health departments in four of five seasons and 2 to 5 weeks earlier than peak mortality reported by 121 cities during seasons with excess mortality associated with pneumonia and influenza.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_17008699", "pmid": "17008699", "task": "evidence_qa", "question": "Do patients with localized prostate cancer treatment really want more aggressive treatment?", "context": "PURPOSE: Examine whether patients with prostate cancer choose the more aggressive of two radiotherapeutic options, whether this choice is reasoned, and what the determinants of the choice are.\n\nPATIENTS AND METHODS: One hundred fifty patients with primary prostate cancer (T(1-3)N(0)M(0)) were informed by means of a decision aid of two treatment options: radiotherapy with 70 Gy versus 74 Gy. The latter treatment is associated with more cure and more toxicity. The patients were asked whether they wanted to choose, and if so which treatment they preferred. They also assigned importance weights to the probability of various outcomes, such as survival, cure and adverse effects. Patients who wanted to choose their own treatment (n = 119) are described here.\n\nRESULTS: The majority of these patients (75%) chose the lower radiation dose. Their choice was highly consistent (P<or = .001), with the importance weights assigned to the probability of survival, cure (odds ratio [OR] = 6.7 and 6.9) and late GI and genitourinary adverse effects (OR = 0.1 and 0.2). The lower dose was chosen more often by the older patients, low-risk patients, patients without hormone treatment, and patients with a low anxiety or depression score.", "ground_truth": {"decision": "no", "answer": "Most patients with localized prostate cancer prefer the lower radiation dose. Our findings indicate that many patients attach more weight to specific quality-of-life aspects (eg, GI toxicity) than to improving survival. Treatment preferences of patients with localized prostate cancer can and should be involved in radiotherapy decision making.", "evidence": ["The majority of these patients (75%) chose the lower radiation dose. Their choice was highly consistent (P<or = .001), with the importance weights assigned to the probability of survival, cure (odds ratio [OR] = 6.7 and 6.9) and late GI and genitourinary adverse effects (OR = 0.1 and 0.2). The lower dose was chosen more often by the older patients, low-risk patients, patients without hormone treatment, and patients with a low anxiety or depression score."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: Examine whether patients with prostate cancer choose the more aggressive of two radiotherapeutic options, whether this choice is reasoned, and what the determinants of the choice are.\n\nPATIENTS AND METHODS: One hundred fifty patients with primary prostate cancer (T(1-3)N(0)M(0)) were informed by means of a decision aid of two treatment options: radiotherapy with 70 Gy versus 74 Gy. The latter treatment is associated with more cure and more toxicity. The patients were asked whether they wanted to choose, and if so which treatment they preferred. They also assigned importance weights to the probability of various outcomes, such as survival, cure and adverse effects. Patients who wanted to choose their own treatment (n = 119) are described here.\n\nRESULTS: The majority of these patients (75%) chose the lower radiation dose. Their choice was highly consistent (P<or = .001), with the importance weights assigned to the probability of survival, cure (odds ratio [OR] = 6.7 and 6.9) and late GI and genitourinary adverse effects (OR = 0.1 and 0.2). The lower dose was chosen more often by the older patients, low-risk patients, patients without hormone treatment, and patients with a low anxiety or depression score.\n\nBiomedical Question:\nDo patients with localized prostate cancer treatment really want more aggressive treatment?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"Most patients with localized prostate cancer prefer the lower radiation dose. Our findings indicate that many patients attach more weight to specific quality-of-life aspects (eg, GI toxicity) than to improving survival. Treatment preferences of patients with localized prostate cancer can and should be involved in radiotherapy decision making.\",\n  \"evidence\": [\n    \"The majority of these patients (75%) chose the lower radiation dose. Their choice was highly consistent (P<or = .001), with the importance weights assigned to the probability of survival, cure (odds ratio [OR] = 6.7 and 6.9) and late GI and genitourinary adverse effects (OR = 0.1 and 0.2). The lower dose was chosen more often by the older patients, low-risk patients, patients without hormone treatment, and patients with a low anxiety or depression score.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_27858166", "pmid": "27858166", "task": "evidence_qa", "question": "Traumatic aortic injury: does the anatomy of the aortic arch influence aortic trauma severity?", "context": "PURPOSE: Traumatic aortic injury (TAI) is a rare but life-threatening type of injury. We investigate whether the anatomy of the aortic arch influences the severity of aortic injury.\n\nMETHODS: This is a retrospective study of twenty-two cases treated with TEVAR for TAI in our department from 2009 to 2014. Aortic injury was assessed in accordance with the recommendations of the Society of Vascular Surgery. We measured the aortic arch angle and the aortic arch index, based on the initial angio-CT scan, in each of the analyzed cases.\n\nRESULTS: The mean aortic arch index and mean aortic arch angle were 6.8 cm and 58.3°, respectively, in the type I injury group; 4.4 cm and 45.9° in the type III group; 3.3 cm and 37° in the type IV group. There were substantial differences in both the aortic arch index and the aortic arch angle of the type III and IV groups. A multivariate analysis confirmed that the aortic arch angle was significantly associated with the occurrence of type III damage (OR 1.5; 95% CI 1.03-2.2).", "ground_truth": {"decision": "yes", "answer": "The severity of TAI is influenced by the sharpness of the aortic arch. There is an inverse relationship between the severity of aortic injury and the aortic arch index.", "evidence": ["The mean aortic arch index and mean aortic arch angle were 6.8 cm and 58.3°, respectively, in the type I injury group; 4.4 cm and 45.9° in the type III group; 3.3 cm and 37° in the type IV group. There were substantial differences in both the aortic arch index and the aortic arch angle of the type III and IV groups. A multivariate analysis confirmed that the aortic arch angle was significantly associated with the occurrence of type III damage (OR 1.5; 95% CI 1.03-2.2)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: Traumatic aortic injury (TAI) is a rare but life-threatening type of injury. We investigate whether the anatomy of the aortic arch influences the severity of aortic injury.\n\nMETHODS: This is a retrospective study of twenty-two cases treated with TEVAR for TAI in our department from 2009 to 2014. Aortic injury was assessed in accordance with the recommendations of the Society of Vascular Surgery. We measured the aortic arch angle and the aortic arch index, based on the initial angio-CT scan, in each of the analyzed cases.\n\nRESULTS: The mean aortic arch index and mean aortic arch angle were 6.8 cm and 58.3°, respectively, in the type I injury group; 4.4 cm and 45.9° in the type III group; 3.3 cm and 37° in the type IV group. There were substantial differences in both the aortic arch index and the aortic arch angle of the type III and IV groups. A multivariate analysis confirmed that the aortic arch angle was significantly associated with the occurrence of type III damage (OR 1.5; 95% CI 1.03-2.2).\n\nBiomedical Question:\nTraumatic aortic injury: does the anatomy of the aortic arch influence aortic trauma severity?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"The severity of TAI is influenced by the sharpness of the aortic arch. There is an inverse relationship between the severity of aortic injury and the aortic arch index.\",\n  \"evidence\": [\n    \"The mean aortic arch index and mean aortic arch angle were 6.8 cm and 58.3°, respectively, in the type I injury group; 4.4 cm and 45.9° in the type III group; 3.3 cm and 37° in the type IV group. There were substantial differences in both the aortic arch index and the aortic arch angle of the type III and IV groups. A multivariate analysis confirmed that the aortic arch angle was significantly associated with the occurrence of type III damage (OR 1.5; 95% CI 1.03-2.2).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_15223725", "pmid": "15223725", "task": "evidence_qa", "question": "Does blood pressure change in treated hypertensive patients depending on whether it is measured by a physician or a nurse?", "context": "OBJECTIVES: To determine whether there are differences between blood pressure (BP) measured by the nurse (NBP), BP measured by the physician (PBP) and self-measured BP in treated hypertensive patients and, if found, to evaluate their clinical importance.\n\nMETHOD: An observational study is carried out with hypertensive patients recruited from two village-based community health centres in Catalonia (Spain) serving an area with a total population of 2800 inhabitants. All patients treated for hypertension visiting the health centre on a specific day of the week and during the same timetable between October 2000 and May 2001 were included.\n\nRESULTS: The difference between physician-systolic BP and nurse-systolic BP was 5.16 mmHg (95% CI 2.62-7.7; p<0.001). The difference between physician-systolic BP and self-measured systolic BP was 4.67 mmHg (95% CI 0.89-8.44; p=0.016). The differences between nurse-systolic BP and self-measured systolic BP were not significant (0.49 mmHg; 95% CI 3.71-2.71; p=0.758). With regards to diastolic BP, no significant differences were found between the different ways of measurement. NBP gave the following values: sensitivity (Sn) of 92% and specificity (Sp) of 60%; positive predictive value (PPV) of 65.7% and negative predictive value (NPV) of 90% with a positive coefficient of probability (CP+) of 2.3 and a negative coefficient of probability (CP-) of 0.133. PBP gave the following results: Sn=72%; Sp=66.7%; PPV=64.3%; NPV=74.1%; CP+=2.16 and CP- = 0.420.", "ground_truth": {"decision": "yes", "answer": "Systolic BP measured by the nurse in treated hypertensive patients is significantly lower than the readings obtained by the physician, and are almost identical to ambulatory BP monitoring. Blood pressure determination by the nurse is desirable not only for diagnosis but also to evaluate the level of control of blood pressure during the follow-up of treated hypertensive patients.", "evidence": ["The difference between physician-systolic BP and nurse-systolic BP was 5.16 mmHg (95% CI 2.62-7.7; p<0.001). The difference between physician-systolic BP and self-measured systolic BP was 4.67 mmHg (95% CI 0.89-8.44; p=0.016). The differences between nurse-systolic BP and self-measured systolic BP were not significant (0.49 mmHg; 95% CI 3.71-2.71; p=0.758). With regards to diastolic BP, no significant differences were found between the different ways of measurement. NBP gave the following values: sensitivity (Sn) of 92% and specificity (Sp) of 60%; positive predictive value (PPV) of 65.7% and negative predictive value (NPV) of 90% with a positive coefficient of probability (CP+) of 2.3 and a negative coefficient of probability (CP-) of 0.133. PBP gave the following results: Sn=72%; Sp=66.7%; PPV=64.3%; NPV=74.1%; CP+=2.16 and CP- = 0.420."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVES: To determine whether there are differences between blood pressure (BP) measured by the nurse (NBP), BP measured by the physician (PBP) and self-measured BP in treated hypertensive patients and, if found, to evaluate their clinical importance.\n\nMETHOD: An observational study is carried out with hypertensive patients recruited from two village-based community health centres in Catalonia (Spain) serving an area with a total population of 2800 inhabitants. All patients treated for hypertension visiting the health centre on a specific day of the week and during the same timetable between October 2000 and May 2001 were included.\n\nRESULTS: The difference between physician-systolic BP and nurse-systolic BP was 5.16 mmHg (95% CI 2.62-7.7; p<0.001). The difference between physician-systolic BP and self-measured systolic BP was 4.67 mmHg (95% CI 0.89-8.44; p=0.016). The differences between nurse-systolic BP and self-measured systolic BP were not significant (0.49 mmHg; 95% CI 3.71-2.71; p=0.758). With regards to diastolic BP, no significant differences were found between the different ways of measurement. NBP gave the following values: sensitivity (Sn) of 92% and specificity (Sp) of 60%; positive predictive value (PPV) of 65.7% and negative predictive value (NPV) of 90% with a positive coefficient of probability (CP+) of 2.3 and a negative coefficient of probability (CP-) of 0.133. PBP gave the following results: Sn=72%; Sp=66.7%; PPV=64.3%; NPV=74.1%; CP+=2.16 and CP- = 0.420.\n\nBiomedical Question:\nDoes blood pressure change in treated hypertensive patients depending on whether it is measured by a physician or a nurse?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Systolic BP measured by the nurse in treated hypertensive patients is significantly lower than the readings obtained by the physician, and are almost identical to ambulatory BP monitoring. Blood pressure determination by the nurse is desirable not only for diagnosis but also to evaluate the level of control of blood pressure during the follow-up of treated hypertensive patients.\",\n  \"evidence\": [\n    \"The difference between physician-systolic BP and nurse-systolic BP was 5.16 mmHg (95% CI 2.62-7.7; p<0.001). The difference between physician-systolic BP and self-measured systolic BP was 4.67 mmHg (95% CI 0.89-8.44; p=0.016). The differences between nurse-systolic BP and self-measured systolic BP were not significant (0.49 mmHg; 95% CI 3.71-2.71; p=0.758). With regards to diastolic BP, no significant differences were found between the different ways of measurement. NBP gave the following values: sensitivity (Sn) of 92% and specificity (Sp) of 60%; positive predictive value (PPV) of 65.7% and negative predictive value (NPV) of 90% with a positive coefficient of probability (CP+) of 2.3 and a negative coefficient of probability (CP-) of 0.133. PBP gave the following results: Sn=72%; Sp=66.7%; PPV=64.3%; NPV=74.1%; CP+=2.16 and CP- = 0.420.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_14612308", "pmid": "14612308", "task": "evidence_qa", "question": "Can PRISM predict length of PICU stay?", "context": "UNLABELLED: PRISM is claimed to score disease severity which has attributed an impact on length of PICU stay (LOS).\n\nPRIMARY OBJECTIVE: To determine the impact of PRISM on LOS, and evaluate an Artificial Neural Network's (ANN) performance to estimate LOS from PRISM item patterns.\n\nRESEARCH DESIGN AND METHODS: Retrospectively we performed correlation and regression analyses on routinely scored PRISM data of all consecutive admissions to our level-III PICU from 1994 to 1999 (n>2000) with individual LOS. In addition, an ANN was trained on the chronologically first 75% of those data (inputs, PRISM items + age + sex; output, LOS). The ANN's performance was tested on the remaining most recent 25% of the data sets.\n\nMAIN RESULTS: The Spearman and Pearson coefficients of correlation between PRISM and LOS were 0.2 (p<0.001) and 0.08 (p = 0.0003), the latter being slightly higher when LOS was logarithmically transformed. Pearson's coefficient of correlation between ANN derived LOS estimate and actual LOS was 0.21 (p<0.001) (LOS logarithmically transformed: 0.34; p<0.001) in the independent validation sample.", "ground_truth": {"decision": "no", "answer": "The ANN with its intrinsic ability to detect non-linear correlation, and to relate specific item patterns to LOS, outperformed linear statistics but was still disappointing in estimating individual LOS. It might be speculated that therapeutic intervention modulates the natural course of the disease thus counteracting both disease severity as initially scored by PRISM, and LOS. This being true, the inverse of the correlation between PRISM (or PRISM based LOS estimate) and LOS might be a candidate indicator of quality of care.", "evidence": ["The Spearman and Pearson coefficients of correlation between PRISM and LOS were 0.2 (p<0.001) and 0.08 (p = 0.0003), the latter being slightly higher when LOS was logarithmically transformed. Pearson's coefficient of correlation between ANN derived LOS estimate and actual LOS was 0.21 (p<0.001) (LOS logarithmically transformed: 0.34; p<0.001) in the independent validation sample."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nUNLABELLED: PRISM is claimed to score disease severity which has attributed an impact on length of PICU stay (LOS).\n\nPRIMARY OBJECTIVE: To determine the impact of PRISM on LOS, and evaluate an Artificial Neural Network's (ANN) performance to estimate LOS from PRISM item patterns.\n\nRESEARCH DESIGN AND METHODS: Retrospectively we performed correlation and regression analyses on routinely scored PRISM data of all consecutive admissions to our level-III PICU from 1994 to 1999 (n>2000) with individual LOS. In addition, an ANN was trained on the chronologically first 75% of those data (inputs, PRISM items + age + sex; output, LOS). The ANN's performance was tested on the remaining most recent 25% of the data sets.\n\nMAIN RESULTS: The Spearman and Pearson coefficients of correlation between PRISM and LOS were 0.2 (p<0.001) and 0.08 (p = 0.0003), the latter being slightly higher when LOS was logarithmically transformed. Pearson's coefficient of correlation between ANN derived LOS estimate and actual LOS was 0.21 (p<0.001) (LOS logarithmically transformed: 0.34; p<0.001) in the independent validation sample.\n\nBiomedical Question:\nCan PRISM predict length of PICU stay?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"The ANN with its intrinsic ability to detect non-linear correlation, and to relate specific item patterns to LOS, outperformed linear statistics but was still disappointing in estimating individual LOS. It might be speculated that therapeutic intervention modulates the natural course of the disease thus counteracting both disease severity as initially scored by PRISM, and LOS. This being true, the inverse of the correlation between PRISM (or PRISM based LOS estimate) and LOS might be a candidate indicator of quality of care.\",\n  \"evidence\": [\n    \"The Spearman and Pearson coefficients of correlation between PRISM and LOS were 0.2 (p<0.001) and 0.08 (p = 0.0003), the latter being slightly higher when LOS was logarithmically transformed. Pearson's coefficient of correlation between ANN derived LOS estimate and actual LOS was 0.21 (p<0.001) (LOS logarithmically transformed: 0.34; p<0.001) in the independent validation sample.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_19130332", "pmid": "19130332", "task": "evidence_qa", "question": "Is the zeolite hemostatic agent beneficial in reducing blood loss during arterial injury?", "context": "BACKGROUND: Uncontrolled hemorrhage is the leading cause of fatality. The aim of this study was to evaluate the effect of zeolite mineral (QuikClot - Advanced Clotting Sponge [QC-ACS]) on blood loss and physiological variables in a swine extremity arterial injury model.\n\nMETHODS: Sixteen swine were used. Oblique groin incision was created and a 5 mm incision was made. The animals were allocated to: control group (n: 6): Pressure dressing was applied with manual pressure over gauze sponge; or QC group (n: 10): QC was directly applied over lacerated femoral artery. Mean arterial pressure, blood loss and physiological parameters were measured during the study period.\n\nRESULTS: Application of QC led to a slower drop in blood pressure. The control group had a significantly higher increase in lactate within 60 minutes. The mean prothrombin time in the control group was significantly increased at 60 minutes. The application of QC led to decreased total blood loss. The QC group had significantly higher hematocrit levels. QC application generated a significant heat production. There were mild edematous and vacuolar changes in nerve samples.", "ground_truth": {"decision": "yes", "answer": "According to the physiological parameters, we observed that zeolite tends to reduce blood loss, however could not stop bleeding completely. We believe that further clinical trials are needed to conclude that zeolite could be used in the routine practice.", "evidence": ["Application of QC led to a slower drop in blood pressure. The control group had a significantly higher increase in lactate within 60 minutes. The mean prothrombin time in the control group was significantly increased at 60 minutes. The application of QC led to decreased total blood loss. The QC group had significantly higher hematocrit levels. QC application generated a significant heat production. There were mild edematous and vacuolar changes in nerve samples."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Uncontrolled hemorrhage is the leading cause of fatality. The aim of this study was to evaluate the effect of zeolite mineral (QuikClot - Advanced Clotting Sponge [QC-ACS]) on blood loss and physiological variables in a swine extremity arterial injury model.\n\nMETHODS: Sixteen swine were used. Oblique groin incision was created and a 5 mm incision was made. The animals were allocated to: control group (n: 6): Pressure dressing was applied with manual pressure over gauze sponge; or QC group (n: 10): QC was directly applied over lacerated femoral artery. Mean arterial pressure, blood loss and physiological parameters were measured during the study period.\n\nRESULTS: Application of QC led to a slower drop in blood pressure. The control group had a significantly higher increase in lactate within 60 minutes. The mean prothrombin time in the control group was significantly increased at 60 minutes. The application of QC led to decreased total blood loss. The QC group had significantly higher hematocrit levels. QC application generated a significant heat production. There were mild edematous and vacuolar changes in nerve samples.\n\nBiomedical Question:\nIs the zeolite hemostatic agent beneficial in reducing blood loss during arterial injury?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"According to the physiological parameters, we observed that zeolite tends to reduce blood loss, however could not stop bleeding completely. We believe that further clinical trials are needed to conclude that zeolite could be used in the routine practice.\",\n  \"evidence\": [\n    \"Application of QC led to a slower drop in blood pressure. The control group had a significantly higher increase in lactate within 60 minutes. The mean prothrombin time in the control group was significantly increased at 60 minutes. The application of QC led to decreased total blood loss. The QC group had significantly higher hematocrit levels. QC application generated a significant heat production. There were mild edematous and vacuolar changes in nerve samples.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_9542484", "pmid": "9542484", "task": "evidence_qa", "question": "Does successful completion of the Perinatal Education Programme result in improved obstetric practice?", "context": "OBJECTIVE: To determine whether successful completion of the Perinatal Education Programme (PEP) improves obstetric practice.\n\nMETHOD: The three midwife obstetric units (MOUs) in a health district of Mpumalanga were included in the study. Two MOUs enrolled in the PEP and the third did not. A 'before-and-after' study design was used to assess any changes in practice, and to monitor whether any changes occurred in the district during the time of the study; data were also collected at the third MOU. Data were collected by scoring of the obstetric files after the patient had delivered.\n\nOUTCOME MEASURES: We ascertained whether the obstetric history, syphilis testing, blood group testing, haemoglobin measurement and uterine growth assessment were performed during antenatal care along with whether appropriate action was taken. For intrapartum care, estimation of fetal weight, the performance of pelvimetry, blood pressure monitoring, urine testing, evaluation of head above pelvis, fetal heart rate monitoring, monitoring of contractions and plotting of cervical dilatation, and whether the appropriate actions were taken, were assessed.\n\nRESULTS: Eight of the 13 midwives at the two MOUs completed the PEP and all demonstrated an improvement in knowledge. Case notes of 303 patients from the various clinics were studied. There was no change in the referral patterns of any of the clinics during the study period. The obstetric history was well documented, but in no group was there a satisfactory response to a detected problem; appropriate action was taken in between 0% and 12% of cases. Syphilis testing was performed in 56-82% of cases, with no difference between the groups. The haemoglobin level was measured in only 4-15% of patients, with no difference before or after completion of the PEP. Where a problem in uterine growth was detected, an appropriate response occurred in 0-8% of patients and no difference before or after completion of the PEP was ascertained. In all groups, estimation of fetal weight and pelvimetry were seldom performed, the urine and fetal heart rate documentation were moderately well done and the blood pressure monitoring, assessment of head above pelvis, monitoring of contractions and plotting of cervical dilatation were usually performed. No differences before or after the PEP were detected. Where problems were detected, appropriate actions taken during labour improved, but not significantly.", "ground_truth": {"decision": "no", "answer": "Completion of the obstetric manual of the PEP improved the knowledge of the midwives but no alteration in practice was detected.", "evidence": ["Eight of the 13 midwives at the two MOUs completed the PEP and all demonstrated an improvement in knowledge. Case notes of 303 patients from the various clinics were studied. There was no change in the referral patterns of any of the clinics during the study period. The obstetric history was well documented, but in no group was there a satisfactory response to a detected problem; appropriate action was taken in between 0% and 12% of cases. Syphilis testing was performed in 56-82% of cases, with no difference between the groups. The haemoglobin level was measured in only 4-15% of patients, with no difference before or after completion of the PEP. Where a problem in uterine growth was detected, an appropriate response occurred in 0-8% of patients and no difference before or after completion of the PEP was ascertained. In all groups, estimation of fetal weight and pelvimetry were seldom performed, the urine and fetal heart rate documentation were moderately well done and the blood pressure monitoring, assessment of head above pelvis, monitoring of contractions and plotting of cervical dilatation were usually performed. No differences before or after the PEP were detected. Where problems were detected, appropriate actions taken during labour improved, but not significantly."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: To determine whether successful completion of the Perinatal Education Programme (PEP) improves obstetric practice.\n\nMETHOD: The three midwife obstetric units (MOUs) in a health district of Mpumalanga were included in the study. Two MOUs enrolled in the PEP and the third did not. A 'before-and-after' study design was used to assess any changes in practice, and to monitor whether any changes occurred in the district during the time of the study; data were also collected at the third MOU. Data were collected by scoring of the obstetric files after the patient had delivered.\n\nOUTCOME MEASURES: We ascertained whether the obstetric history, syphilis testing, blood group testing, haemoglobin measurement and uterine growth assessment were performed during antenatal care along with whether appropriate action was taken. For intrapartum care, estimation of fetal weight, the performance of pelvimetry, blood pressure monitoring, urine testing, evaluation of head above pelvis, fetal heart rate monitoring, monitoring of contractions and plotting of cervical dilatation, and whether the appropriate actions were taken, were assessed.\n\nRESULTS: Eight of the 13 midwives at the two MOUs completed the PEP and all demonstrated an improvement in knowledge. Case notes of 303 patients from the various clinics were studied. There was no change in the referral patterns of any of the clinics during the study period. The obstetric history was well documented, but in no group was there a satisfactory response to a detected problem; appropriate action was taken in between 0% and 12% of cases. Syphilis testing was performed in 56-82% of cases, with no difference between the groups. The haemoglobin level was measured in only 4-15% of patients, with no difference before or after completion of the PEP. Where a problem in uterine growth was detected, an appropriate response occurred in 0-8% of patients and no difference before or after completion of the PEP was ascertained. In all groups, estimation of fetal weight and pelvimetry were seldom performed, the urine and fetal heart rate documentation were moderately well done and the blood pressure monitoring, assessment of head above pelvis, monitoring of contractions and plotting of cervical dilatation were usually performed. No differences before or after the PEP were detected. Where problems were detected, appropriate actions taken during labour improved, but not significantly.\n\nBiomedical Question:\nDoes successful completion of the Perinatal Education Programme result in improved obstetric practice?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"Completion of the obstetric manual of the PEP improved the knowledge of the midwives but no alteration in practice was detected.\",\n  \"evidence\": [\n    \"Eight of the 13 midwives at the two MOUs completed the PEP and all demonstrated an improvement in knowledge. Case notes of 303 patients from the various clinics were studied. There was no change in the referral patterns of any of the clinics during the study period. The obstetric history was well documented, but in no group was there a satisfactory response to a detected problem; appropriate action was taken in between 0% and 12% of cases. Syphilis testing was performed in 56-82% of cases, with no difference between the groups. The haemoglobin level was measured in only 4-15% of patients, with no difference before or after completion of the PEP. Where a problem in uterine growth was detected, an appropriate response occurred in 0-8% of patients and no difference before or after completion of the PEP was ascertained. In all groups, estimation of fetal weight and pelvimetry were seldom performed, the urine and fetal heart rate documentation were moderately well done and the blood pressure monitoring, assessment of head above pelvis, monitoring of contractions and plotting of cervical dilatation were usually performed. No differences before or after the PEP were detected. Where problems were detected, appropriate actions taken during labour improved, but not significantly.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_24183388", "pmid": "24183388", "task": "evidence_qa", "question": "Is the Hawkins sign able to predict necrosis in fractures of the neck of the astragalus?", "context": "OBJECTIVE: To assess if the Hawkins sign can predict whether or not astragalus fractures of the neck will develop avascular necrosis. It is also assessed whether the occurrence of this complication is related to the displacement of the fracture, soft tissue injury, or delay in the reduction or surgery. The results were compared with those found in the literature.\n\nMATERIAL AND METHODS: A retrospective study was conducted on 23 talar neck fractures recorded over a a period of thirteen years. The following variables were analysed: displacement of the fracture, soft tissue injury, delay and type of treatment, complications, observation of the Hawkins sign, and functional outcome.\n\nRESULTS: There were 7 type I Hawkins fractures, 11 type II, and 4 type III and 1 type IV. Four cases developed avascular necrosis (2 Hawkins type II and 2 type III). Hawkins sign was observed in 12 cases, of which none developed necrosis. Four cases with negative Hawkins sign developed necrosis. No statistically significant differences were found when comparing the development of avascular necrosis with the displacement of the fracture, soft tissue injury, or delay in treatment. Differences were found when comparing the development of avascular necrosis with the Hawkins sign (P=.03).", "ground_truth": {"decision": "maybe", "answer": "A positive Hawkins sign rules out that the fractured talus has developed avascular necrosis, but its absence does not confirm it.", "evidence": ["There were 7 type I Hawkins fractures, 11 type II, and 4 type III and 1 type IV. Four cases developed avascular necrosis (2 Hawkins type II and 2 type III). Hawkins sign was observed in 12 cases, of which none developed necrosis. Four cases with negative Hawkins sign developed necrosis. No statistically significant differences were found when comparing the development of avascular necrosis with the displacement of the fracture, soft tissue injury, or delay in treatment. Differences were found when comparing the development of avascular necrosis with the Hawkins sign (P=.03)."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: To assess if the Hawkins sign can predict whether or not astragalus fractures of the neck will develop avascular necrosis. It is also assessed whether the occurrence of this complication is related to the displacement of the fracture, soft tissue injury, or delay in the reduction or surgery. The results were compared with those found in the literature.\n\nMATERIAL AND METHODS: A retrospective study was conducted on 23 talar neck fractures recorded over a a period of thirteen years. The following variables were analysed: displacement of the fracture, soft tissue injury, delay and type of treatment, complications, observation of the Hawkins sign, and functional outcome.\n\nRESULTS: There were 7 type I Hawkins fractures, 11 type II, and 4 type III and 1 type IV. Four cases developed avascular necrosis (2 Hawkins type II and 2 type III). Hawkins sign was observed in 12 cases, of which none developed necrosis. Four cases with negative Hawkins sign developed necrosis. No statistically significant differences were found when comparing the development of avascular necrosis with the displacement of the fracture, soft tissue injury, or delay in treatment. Differences were found when comparing the development of avascular necrosis with the Hawkins sign (P=.03).\n\nBiomedical Question:\nIs the Hawkins sign able to predict necrosis in fractures of the neck of the astragalus?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"A positive Hawkins sign rules out that the fractured talus has developed avascular necrosis, but its absence does not confirm it.\",\n  \"evidence\": [\n    \"There were 7 type I Hawkins fractures, 11 type II, and 4 type III and 1 type IV. Four cases developed avascular necrosis (2 Hawkins type II and 2 type III). Hawkins sign was observed in 12 cases, of which none developed necrosis. Four cases with negative Hawkins sign developed necrosis. No statistically significant differences were found when comparing the development of avascular necrosis with the displacement of the fracture, soft tissue injury, or delay in treatment. Differences were found when comparing the development of avascular necrosis with the Hawkins sign (P=.03).\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_8910148", "pmid": "8910148", "task": "evidence_qa", "question": "Transesophageal echocardiographic assessment of left ventricular function in brain-dead patients: are marginally acceptable hearts suitable for transplantation?", "context": "BACKGROUND: The brain-dead donor supply has become one of the criteria limiting the performance of heart transplantation. Conventional screening criteria are too limiting and exclude suitable heart donors. Echocardiography is now widely available and is a reliable tool to assess left ventricular dysfunction in brain-dead donors. Yet few data are available on the degree of left ventricular dysfunction where a transplantation is possible.\n\nMETHODS: Fifty-five potential brain-dead heart donors (age 38 +/- 11 years) were prospectively evaluated by transesophageal echocardiography (TEE) before harvesting. Fractional area change (FAC) was used to assess left ventricular function in potential brain-dead donors. Transplanted hearts were evaluated on the fifth postoperative day. The transplantation was considered a success if the recipient was alive, not retransplanted, without an assistance device or an epinephrine infusion of more than 1 mg/h and showed an ejection fraction above 40%.\n\nRESULTS: Of the 55 potential heart donors, 20 exhibited an FAC of less than 50%. Forty hearts were harvested, 36 of which were successfully transplanted. Nine patients had an FAC below 50% (group H2) and 27 had an FAC over 50% (group H1). Four patients died: 2 from hemorrhage (FAC>50% in donors); 1 from right and one from left ventricular dysfunction (FAC<50% in donors). The FAC increased significantly from 51 +/- 15% to 57 +/- 11% in 18 hearts that underwent TEE in donors and afterwards in recipients. Overall actuarial survival was 86.2% versus 64.6% at 1 and 2 years in group H1 and group H2, respectively (p = NS).", "ground_truth": {"decision": "yes", "answer": "TEE is useful to assess left ventricular function in potential brain-dead donors. An FAC less than 50% is present in 36% of potential heart donors. Because left ventricular dysfunction is often reversible shortly after transplantation, an FAC below 50% may not necessarily preclude the use of hearts for transplantation.", "evidence": ["Of the 55 potential heart donors, 20 exhibited an FAC of less than 50%. Forty hearts were harvested, 36 of which were successfully transplanted. Nine patients had an FAC below 50% (group H2) and 27 had an FAC over 50% (group H1). Four patients died: 2 from hemorrhage (FAC>50% in donors); 1 from right and one from left ventricular dysfunction (FAC<50% in donors). The FAC increased significantly from 51 +/- 15% to 57 +/- 11% in 18 hearts that underwent TEE in donors and afterwards in recipients. Overall actuarial survival was 86.2% versus 64.6% at 1 and 2 years in group H1 and group H2, respectively (p = NS)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: The brain-dead donor supply has become one of the criteria limiting the performance of heart transplantation. Conventional screening criteria are too limiting and exclude suitable heart donors. Echocardiography is now widely available and is a reliable tool to assess left ventricular dysfunction in brain-dead donors. Yet few data are available on the degree of left ventricular dysfunction where a transplantation is possible.\n\nMETHODS: Fifty-five potential brain-dead heart donors (age 38 +/- 11 years) were prospectively evaluated by transesophageal echocardiography (TEE) before harvesting. Fractional area change (FAC) was used to assess left ventricular function in potential brain-dead donors. Transplanted hearts were evaluated on the fifth postoperative day. The transplantation was considered a success if the recipient was alive, not retransplanted, without an assistance device or an epinephrine infusion of more than 1 mg/h and showed an ejection fraction above 40%.\n\nRESULTS: Of the 55 potential heart donors, 20 exhibited an FAC of less than 50%. Forty hearts were harvested, 36 of which were successfully transplanted. Nine patients had an FAC below 50% (group H2) and 27 had an FAC over 50% (group H1). Four patients died: 2 from hemorrhage (FAC>50% in donors); 1 from right and one from left ventricular dysfunction (FAC<50% in donors). The FAC increased significantly from 51 +/- 15% to 57 +/- 11% in 18 hearts that underwent TEE in donors and afterwards in recipients. Overall actuarial survival was 86.2% versus 64.6% at 1 and 2 years in group H1 and group H2, respectively (p = NS).\n\nBiomedical Question:\nTransesophageal echocardiographic assessment of left ventricular function in brain-dead patients: are marginally acceptable hearts suitable for transplantation?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"TEE is useful to assess left ventricular function in potential brain-dead donors. An FAC less than 50% is present in 36% of potential heart donors. Because left ventricular dysfunction is often reversible shortly after transplantation, an FAC below 50% may not necessarily preclude the use of hearts for transplantation.\",\n  \"evidence\": [\n    \"Of the 55 potential heart donors, 20 exhibited an FAC of less than 50%. Forty hearts were harvested, 36 of which were successfully transplanted. Nine patients had an FAC below 50% (group H2) and 27 had an FAC over 50% (group H1). Four patients died: 2 from hemorrhage (FAC>50% in donors); 1 from right and one from left ventricular dysfunction (FAC<50% in donors). The FAC increased significantly from 51 +/- 15% to 57 +/- 11% in 18 hearts that underwent TEE in donors and afterwards in recipients. Overall actuarial survival was 86.2% versus 64.6% at 1 and 2 years in group H1 and group H2, respectively (p = NS).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_15774570", "pmid": "15774570", "task": "evidence_qa", "question": "Does increased use of private health care reduce the demand for NHS care?", "context": "BACKGROUND: The use of the private sector for health care is increasing, but it is unclear whether this will reduce demand on the NHS. The aim of this study was to examine the relationship between private and NHS outpatient referral rates accounting for their association with deprivation.\n\nMETHODS: This is a prospective survey of general practitioner referrals to private and NHS consultant-led services between 1 January and 31 December 2001 from 10 general practices in the Trent Focus Collaborative Research Network, United Kingdom. Patient referrals were aggregated to give private and NHS referral rates for each electoral ward in each practice.\n\nRESULTS: Of 17,137 referrals, 90.4 percent (15,495) were to the NHS and 9.6 percent (1642) to the private sector. Private referral rates were lower in patients from the most deprived fifth of wards compared with the least deprived fifth (rate ratio 0.25, 95 percent CI 0.15 to 0.41, p<0.001), whereas NHS referral rates were slightly higher in patients in the most deprived fifth of wards (rate ratio 1.18, 95 percent CI 0.98 to 1.42, p = 0.08) both after age standardisation and adjustment for practice. The NHS referral rate was significantly higher (rate ratio 1.40, 95 percent CI 1.15 to 1.71, p = 0.001) in wards with private referral rates in the top fifth compared with the bottom fifth after adjustment for deprivation and practice.", "ground_truth": {"decision": "no", "answer": "Increased private health care activity does not reduce the demand for NHS care: NHS and private referral rates were positively associated with each other after adjusting for age, deprivation and practice.", "evidence": ["Of 17,137 referrals, 90.4 percent (15,495) were to the NHS and 9.6 percent (1642) to the private sector. Private referral rates were lower in patients from the most deprived fifth of wards compared with the least deprived fifth (rate ratio 0.25, 95 percent CI 0.15 to 0.41, p<0.001), whereas NHS referral rates were slightly higher in patients in the most deprived fifth of wards (rate ratio 1.18, 95 percent CI 0.98 to 1.42, p = 0.08) both after age standardisation and adjustment for practice. The NHS referral rate was significantly higher (rate ratio 1.40, 95 percent CI 1.15 to 1.71, p = 0.001) in wards with private referral rates in the top fifth compared with the bottom fifth after adjustment for deprivation and practice."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: The use of the private sector for health care is increasing, but it is unclear whether this will reduce demand on the NHS. The aim of this study was to examine the relationship between private and NHS outpatient referral rates accounting for their association with deprivation.\n\nMETHODS: This is a prospective survey of general practitioner referrals to private and NHS consultant-led services between 1 January and 31 December 2001 from 10 general practices in the Trent Focus Collaborative Research Network, United Kingdom. Patient referrals were aggregated to give private and NHS referral rates for each electoral ward in each practice.\n\nRESULTS: Of 17,137 referrals, 90.4 percent (15,495) were to the NHS and 9.6 percent (1642) to the private sector. Private referral rates were lower in patients from the most deprived fifth of wards compared with the least deprived fifth (rate ratio 0.25, 95 percent CI 0.15 to 0.41, p<0.001), whereas NHS referral rates were slightly higher in patients in the most deprived fifth of wards (rate ratio 1.18, 95 percent CI 0.98 to 1.42, p = 0.08) both after age standardisation and adjustment for practice. The NHS referral rate was significantly higher (rate ratio 1.40, 95 percent CI 1.15 to 1.71, p = 0.001) in wards with private referral rates in the top fifth compared with the bottom fifth after adjustment for deprivation and practice.\n\nBiomedical Question:\nDoes increased use of private health care reduce the demand for NHS care?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"Increased private health care activity does not reduce the demand for NHS care: NHS and private referral rates were positively associated with each other after adjusting for age, deprivation and practice.\",\n  \"evidence\": [\n    \"Of 17,137 referrals, 90.4 percent (15,495) were to the NHS and 9.6 percent (1642) to the private sector. Private referral rates were lower in patients from the most deprived fifth of wards compared with the least deprived fifth (rate ratio 0.25, 95 percent CI 0.15 to 0.41, p<0.001), whereas NHS referral rates were slightly higher in patients in the most deprived fifth of wards (rate ratio 1.18, 95 percent CI 0.98 to 1.42, p = 0.08) both after age standardisation and adjustment for practice. The NHS referral rate was significantly higher (rate ratio 1.40, 95 percent CI 1.15 to 1.71, p = 0.001) in wards with private referral rates in the top fifth compared with the bottom fifth after adjustment for deprivation and practice.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_17562682", "pmid": "17562682", "task": "evidence_qa", "question": "Is Panton-Valentine leucocidin associated with the pathogenesis of Staphylococcus aureus bacteraemia in the UK?", "context": "BACKGROUND: The morbidity and mortality associated with Panton-Valentine leucocidin (PVL)-positive Staphylococcus aureus suggest that this toxin is a key marker of disease severity. Nevertheless, the importance of PVL in the pathogenesis of primary bacteraemia caused by S. aureus is uncertain. We have determined the prevalence of PVL-encoding genes among isolates of S. aureus from bacteraemic patients.\n\nMETHODS: Consecutive bacteraemia isolates of S. aureus (n=244) from patients hospitalized in 25 centres in the UK and Ireland during 2005 were screened for PVL and mecA genes. PVL-positive isolates were characterized by toxin gene profiling, PFGE, spa-typing and MIC determinations for a range of antimicrobials.\n\nRESULTS: Four out of 244 isolates (1.6%) were PVL-positive and susceptible to oxacillin [methicillin-susceptible S. aureus (MSSA)]. Eighty-eight out of 244 (36%) were oxacillin-resistant (methicillin-resistant S. aureus), but none was PVL-positive. The four patients (two males: 30 and 33 years; two females: 62 and 80 years) had infection foci of: skin and soft tissue, unknown, indwelling line, and surgical site, and were located at one centre in Wales, one in England and two in Ireland. One of four PVL-positive isolates was resistant to penicillin and fusidic acid, the remainder were susceptible to all antibiotics tested. Genotypic analyses showed that the four isolates represented three distinct strains; the two isolates from Ireland were related.", "ground_truth": {"decision": "maybe", "answer": "We found that 1.6% of S. aureus (all MSSA) from bacteraemic patients were PVL-positive. This low incidence suggests that PVL-positive S. aureus are of no particular significance as causative agents of S. aureus bacteraemia.", "evidence": ["Four out of 244 isolates (1.6%) were PVL-positive and susceptible to oxacillin [methicillin-susceptible S. aureus (MSSA)]. Eighty-eight out of 244 (36%) were oxacillin-resistant (methicillin-resistant S. aureus), but none was PVL-positive. The four patients (two males: 30 and 33 years; two females: 62 and 80 years) had infection foci of: skin and soft tissue, unknown, indwelling line, and surgical site, and were located at one centre in Wales, one in England and two in Ireland. One of four PVL-positive isolates was resistant to penicillin and fusidic acid, the remainder were susceptible to all antibiotics tested. Genotypic analyses showed that the four isolates represented three distinct strains; the two isolates from Ireland were related."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: The morbidity and mortality associated with Panton-Valentine leucocidin (PVL)-positive Staphylococcus aureus suggest that this toxin is a key marker of disease severity. Nevertheless, the importance of PVL in the pathogenesis of primary bacteraemia caused by S. aureus is uncertain. We have determined the prevalence of PVL-encoding genes among isolates of S. aureus from bacteraemic patients.\n\nMETHODS: Consecutive bacteraemia isolates of S. aureus (n=244) from patients hospitalized in 25 centres in the UK and Ireland during 2005 were screened for PVL and mecA genes. PVL-positive isolates were characterized by toxin gene profiling, PFGE, spa-typing and MIC determinations for a range of antimicrobials.\n\nRESULTS: Four out of 244 isolates (1.6%) were PVL-positive and susceptible to oxacillin [methicillin-susceptible S. aureus (MSSA)]. Eighty-eight out of 244 (36%) were oxacillin-resistant (methicillin-resistant S. aureus), but none was PVL-positive. The four patients (two males: 30 and 33 years; two females: 62 and 80 years) had infection foci of: skin and soft tissue, unknown, indwelling line, and surgical site, and were located at one centre in Wales, one in England and two in Ireland. One of four PVL-positive isolates was resistant to penicillin and fusidic acid, the remainder were susceptible to all antibiotics tested. Genotypic analyses showed that the four isolates represented three distinct strains; the two isolates from Ireland were related.\n\nBiomedical Question:\nIs Panton-Valentine leucocidin associated with the pathogenesis of Staphylococcus aureus bacteraemia in the UK?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"We found that 1.6% of S. aureus (all MSSA) from bacteraemic patients were PVL-positive. This low incidence suggests that PVL-positive S. aureus are of no particular significance as causative agents of S. aureus bacteraemia.\",\n  \"evidence\": [\n    \"Four out of 244 isolates (1.6%) were PVL-positive and susceptible to oxacillin [methicillin-susceptible S. aureus (MSSA)]. Eighty-eight out of 244 (36%) were oxacillin-resistant (methicillin-resistant S. aureus), but none was PVL-positive. The four patients (two males: 30 and 33 years; two females: 62 and 80 years) had infection foci of: skin and soft tissue, unknown, indwelling line, and surgical site, and were located at one centre in Wales, one in England and two in Ireland. One of four PVL-positive isolates was resistant to penicillin and fusidic acid, the remainder were susceptible to all antibiotics tested. Genotypic analyses showed that the four isolates represented three distinct strains; the two isolates from Ireland were related.\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_23860049", "pmid": "23860049", "task": "evidence_qa", "question": "Do we need imaging to diagnose appendicitis in children?", "context": "BACKGROUND: To evaluate the role of clinical assessment with selective use of imaging studies in the management of suspected acute appendicitis in children.\n\nPATIENTS AND METHODS: Medical records of children referred to Emergency Room in 2010 for suspected appendicitis were retrospectively reviewed. Diagnostic investigations divided by age and sex were related to pathological findings. Negative appendectomy and complication rates were calculated.\n\nRESULTS: 923 children needed surgical assessment : In 75.7% of them surgical indication was excluded and 24.3% were admitted to surgical ward for observation. Appendectomy was eventually performed in 137 patients (61.9%), 82.4% of them without any preoperative imaging while 17.6% underwent selective studies, mainly abdominal ultrasonography (14.6%). Imaging was requested twice as frequently in not operated admitted children (39.3%) than in the operated ones (17.5%, P<0.001). Overall complicated appendicitis rate (peritonitis and abscess) resulted 26.4% and negative appendectomy rate 8.8%. Females older than 10 years presented histologically not-confirmed appendicitis in 22.2% of cases, while the younger ones presented more frequently complicated appendicitis (29.3%).", "ground_truth": {"decision": "maybe", "answer": "Clinical assessment is the key to diagnose appendicitis. Nevertheless, in girls older than 10 years, selected use of imaging should be implemented to avoid unnecessary appendectomies. Imaging of choice in equivocal cases should be ultrasonography.", "evidence": ["923 children needed surgical assessment : In 75.7% of them surgical indication was excluded and 24.3% were admitted to surgical ward for observation. Appendectomy was eventually performed in 137 patients (61.9%), 82.4% of them without any preoperative imaging while 17.6% underwent selective studies, mainly abdominal ultrasonography (14.6%). Imaging was requested twice as frequently in not operated admitted children (39.3%) than in the operated ones (17.5%, P<0.001). Overall complicated appendicitis rate (peritonitis and abscess) resulted 26.4% and negative appendectomy rate 8.8%. Females older than 10 years presented histologically not-confirmed appendicitis in 22.2% of cases, while the younger ones presented more frequently complicated appendicitis (29.3%)."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: To evaluate the role of clinical assessment with selective use of imaging studies in the management of suspected acute appendicitis in children.\n\nPATIENTS AND METHODS: Medical records of children referred to Emergency Room in 2010 for suspected appendicitis were retrospectively reviewed. Diagnostic investigations divided by age and sex were related to pathological findings. Negative appendectomy and complication rates were calculated.\n\nRESULTS: 923 children needed surgical assessment : In 75.7% of them surgical indication was excluded and 24.3% were admitted to surgical ward for observation. Appendectomy was eventually performed in 137 patients (61.9%), 82.4% of them without any preoperative imaging while 17.6% underwent selective studies, mainly abdominal ultrasonography (14.6%). Imaging was requested twice as frequently in not operated admitted children (39.3%) than in the operated ones (17.5%, P<0.001). Overall complicated appendicitis rate (peritonitis and abscess) resulted 26.4% and negative appendectomy rate 8.8%. Females older than 10 years presented histologically not-confirmed appendicitis in 22.2% of cases, while the younger ones presented more frequently complicated appendicitis (29.3%).\n\nBiomedical Question:\nDo we need imaging to diagnose appendicitis in children?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"Clinical assessment is the key to diagnose appendicitis. Nevertheless, in girls older than 10 years, selected use of imaging should be implemented to avoid unnecessary appendectomies. Imaging of choice in equivocal cases should be ultrasonography.\",\n  \"evidence\": [\n    \"923 children needed surgical assessment : In 75.7% of them surgical indication was excluded and 24.3% were admitted to surgical ward for observation. Appendectomy was eventually performed in 137 patients (61.9%), 82.4% of them without any preoperative imaging while 17.6% underwent selective studies, mainly abdominal ultrasonography (14.6%). Imaging was requested twice as frequently in not operated admitted children (39.3%) than in the operated ones (17.5%, P<0.001). Overall complicated appendicitis rate (peritonitis and abscess) resulted 26.4% and negative appendectomy rate 8.8%. Females older than 10 years presented histologically not-confirmed appendicitis in 22.2% of cases, while the younger ones presented more frequently complicated appendicitis (29.3%).\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_17894828", "pmid": "17894828", "task": "evidence_qa", "question": "Serum angiotensin-converting enzyme and frequency of severe hypoglycaemia in Type 1 diabetes: does a relationship exist?", "context": "AIMS: An association has been described between elevated serum angiotensin-converting enzyme (ACE) and an increased risk of severe hypoglycaemia (SH). To ascertain whether this reported association could be replicated in a different country, it was re-examined in 300 individuals with Type 1 diabetes.\n\nMETHODS: People with Type 1 diabetes, none of whom was taking renin-angiotensin system blocking drugs, were recruited. Participants recorded the frequency with which they had experienced SH. Glycated haemoglobin (HbA(1c)) and serum ACE were measured. The difference in the incidence of SH between different quartiles of ACE activity and the relationship between serum ACE and SH were examined using non-parametric statistical tests and a negative binomial model.\n\nRESULTS: Data were obtained from 300 patients [158 male; HbA(1c) median (range) 8.2% (5.2-12.8%), median age 36 years (16-88); duration of diabetes 14.5 years (2-49)]. The incidence of SH was 0.93 episodes per patient year. The mean incidence of SH in the top and bottom quartiles of ACE activity was 0.5 and 1.7 episodes per patient year, respectively, but this difference was not statistically significant (P = 0.075). Spearman's test showed a very weak, although statistically significant, association between serum ACE level and SH incidence (r = 0.115, P = 0.047). The binomial model also showed a statistically significant (P = 0.002), but clinically weak, relationship between serum ACE and SH.", "ground_truth": {"decision": "yes", "answer": "The present survey showed a weak relationship between serum ACE and the frequency of SH, the clinical relevance of which is unclear. This limits the proposed role for serum ACE as an index of risk for SH.", "evidence": ["Data were obtained from 300 patients [158 male; HbA(1c) median (range) 8.2% (5.2-12.8%), median age 36 years (16-88); duration of diabetes 14.5 years (2-49)]. The incidence of SH was 0.93 episodes per patient year. The mean incidence of SH in the top and bottom quartiles of ACE activity was 0.5 and 1.7 episodes per patient year, respectively, but this difference was not statistically significant (P = 0.075). Spearman's test showed a very weak, although statistically significant, association between serum ACE level and SH incidence (r = 0.115, P = 0.047). The binomial model also showed a statistically significant (P = 0.002), but clinically weak, relationship between serum ACE and SH."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nAIMS: An association has been described between elevated serum angiotensin-converting enzyme (ACE) and an increased risk of severe hypoglycaemia (SH). To ascertain whether this reported association could be replicated in a different country, it was re-examined in 300 individuals with Type 1 diabetes.\n\nMETHODS: People with Type 1 diabetes, none of whom was taking renin-angiotensin system blocking drugs, were recruited. Participants recorded the frequency with which they had experienced SH. Glycated haemoglobin (HbA(1c)) and serum ACE were measured. The difference in the incidence of SH between different quartiles of ACE activity and the relationship between serum ACE and SH were examined using non-parametric statistical tests and a negative binomial model.\n\nRESULTS: Data were obtained from 300 patients [158 male; HbA(1c) median (range) 8.2% (5.2-12.8%), median age 36 years (16-88); duration of diabetes 14.5 years (2-49)]. The incidence of SH was 0.93 episodes per patient year. The mean incidence of SH in the top and bottom quartiles of ACE activity was 0.5 and 1.7 episodes per patient year, respectively, but this difference was not statistically significant (P = 0.075). Spearman's test showed a very weak, although statistically significant, association between serum ACE level and SH incidence (r = 0.115, P = 0.047). The binomial model also showed a statistically significant (P = 0.002), but clinically weak, relationship between serum ACE and SH.\n\nBiomedical Question:\nSerum angiotensin-converting enzyme and frequency of severe hypoglycaemia in Type 1 diabetes: does a relationship exist?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"The present survey showed a weak relationship between serum ACE and the frequency of SH, the clinical relevance of which is unclear. This limits the proposed role for serum ACE as an index of risk for SH.\",\n  \"evidence\": [\n    \"Data were obtained from 300 patients [158 male; HbA(1c) median (range) 8.2% (5.2-12.8%), median age 36 years (16-88); duration of diabetes 14.5 years (2-49)]. The incidence of SH was 0.93 episodes per patient year. The mean incidence of SH in the top and bottom quartiles of ACE activity was 0.5 and 1.7 episodes per patient year, respectively, but this difference was not statistically significant (P = 0.075). Spearman's test showed a very weak, although statistically significant, association between serum ACE level and SH incidence (r = 0.115, P = 0.047). The binomial model also showed a statistically significant (P = 0.002), but clinically weak, relationship between serum ACE and SH.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_2224269", "pmid": "2224269", "task": "evidence_qa", "question": "Should general practitioners call patients by their first names?", "context": "OBJECTIVE: To assess the acceptability to patients of the use of patients' first names by doctors and doctors' first names by patients in general practice.\n\nDESIGN: An administered questionnaire survey.\n\nSETTING: 5 General practices in Lothian.\n\nPATIENTS: 475 Patients consulting 30 general practitioners.\n\nMAIN OUTCOME MEASURE: Response by patients to questionnaire on attitude to use of first names.\n\nRESULTS: Most of the patients either liked (223) or did not mind (175) being called by their first names. Only 77 disliked it, most of whom were aged over 65. Most patients (324) did not, however, want to call the doctor by his or her first name.", "ground_truth": {"decision": "yes", "answer": "General practitioners should consider using patients' first names more often, particularly with younger patients.", "evidence": ["Most of the patients either liked (223) or did not mind (175) being called by their first names. Only 77 disliked it, most of whom were aged over 65. Most patients (324) did not, however, want to call the doctor by his or her first name."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: To assess the acceptability to patients of the use of patients' first names by doctors and doctors' first names by patients in general practice.\n\nDESIGN: An administered questionnaire survey.\n\nSETTING: 5 General practices in Lothian.\n\nPATIENTS: 475 Patients consulting 30 general practitioners.\n\nMAIN OUTCOME MEASURE: Response by patients to questionnaire on attitude to use of first names.\n\nRESULTS: Most of the patients either liked (223) or did not mind (175) being called by their first names. Only 77 disliked it, most of whom were aged over 65. Most patients (324) did not, however, want to call the doctor by his or her first name.\n\nBiomedical Question:\nShould general practitioners call patients by their first names?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"General practitioners should consider using patients' first names more often, particularly with younger patients.\",\n  \"evidence\": [\n    \"Most of the patients either liked (223) or did not mind (175) being called by their first names. Only 77 disliked it, most of whom were aged over 65. Most patients (324) did not, however, want to call the doctor by his or her first name.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_17032327", "pmid": "17032327", "task": "evidence_qa", "question": "Do supervised colorectal trainees differ from consultants in terms of quality of TME surgery?", "context": "OBJECTIVE: The quality of surgical excision is held to be a major determinant of outcome following surgery for rectal cancer. Macroscopic examination of the excised mesorectum allows for reproducible assessment of the quality of surgery. We aimed to determine whether quality of excision undertaken by colorectal trainees under supervision was comparable with that performed by consultants, as measured using mesorectal grades.\n\nMETHOD: A total of 130 consecutive patients undergoing potentially curative resection for primary adenocarcinoma of the rectum in our centre from 2001 to 2003 were included in the study. The pathologists graded the excised mesorectum according to staged classification proposed by Quirke. The outcome (quality of mesorectal excision and secondary outcomes including local recurrence and overall recurrence) of operations performed by consultants was compared with that of trainees. Statistical significance was tested using Pearson chi(2) test.\n\nRESULTS: Eighty-nine operations were performed by consultants and 41 by senior colorectal trainees with consultant supervision. Forty-four patients (49%) had good mesorectum when operated by consultants in comparison with 17 (41.5%) by the trainees. There was no statistically significant difference (P = 0.717) between the two groups in terms of quality of mesorectum excised after potentially curative resection. Furthermore, there were seven local recurrences in patients operated by consultants (7.8%) when compared with four in the trainee group (9.5%) and once again there was no statistical significance between the two groups (P = 0.719).", "ground_truth": {"decision": "no", "answer": "We conclude that the quality of rectal cancer excision, as defined by mesorectal grades, achieved by supervised colorectal trainees is comparable with that achieved by consultants.", "evidence": ["Eighty-nine operations were performed by consultants and 41 by senior colorectal trainees with consultant supervision. Forty-four patients (49%) had good mesorectum when operated by consultants in comparison with 17 (41.5%) by the trainees. There was no statistically significant difference (P = 0.717) between the two groups in terms of quality of mesorectum excised after potentially curative resection. Furthermore, there were seven local recurrences in patients operated by consultants (7.8%) when compared with four in the trainee group (9.5%) and once again there was no statistical significance between the two groups (P = 0.719)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: The quality of surgical excision is held to be a major determinant of outcome following surgery for rectal cancer. Macroscopic examination of the excised mesorectum allows for reproducible assessment of the quality of surgery. We aimed to determine whether quality of excision undertaken by colorectal trainees under supervision was comparable with that performed by consultants, as measured using mesorectal grades.\n\nMETHOD: A total of 130 consecutive patients undergoing potentially curative resection for primary adenocarcinoma of the rectum in our centre from 2001 to 2003 were included in the study. The pathologists graded the excised mesorectum according to staged classification proposed by Quirke. The outcome (quality of mesorectal excision and secondary outcomes including local recurrence and overall recurrence) of operations performed by consultants was compared with that of trainees. Statistical significance was tested using Pearson chi(2) test.\n\nRESULTS: Eighty-nine operations were performed by consultants and 41 by senior colorectal trainees with consultant supervision. Forty-four patients (49%) had good mesorectum when operated by consultants in comparison with 17 (41.5%) by the trainees. There was no statistically significant difference (P = 0.717) between the two groups in terms of quality of mesorectum excised after potentially curative resection. Furthermore, there were seven local recurrences in patients operated by consultants (7.8%) when compared with four in the trainee group (9.5%) and once again there was no statistical significance between the two groups (P = 0.719).\n\nBiomedical Question:\nDo supervised colorectal trainees differ from consultants in terms of quality of TME surgery?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"We conclude that the quality of rectal cancer excision, as defined by mesorectal grades, achieved by supervised colorectal trainees is comparable with that achieved by consultants.\",\n  \"evidence\": [\n    \"Eighty-nine operations were performed by consultants and 41 by senior colorectal trainees with consultant supervision. Forty-four patients (49%) had good mesorectum when operated by consultants in comparison with 17 (41.5%) by the trainees. There was no statistically significant difference (P = 0.717) between the two groups in terms of quality of mesorectum excised after potentially curative resection. Furthermore, there were seven local recurrences in patients operated by consultants (7.8%) when compared with four in the trainee group (9.5%) and once again there was no statistical significance between the two groups (P = 0.719).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_19419587", "pmid": "19419587", "task": "evidence_qa", "question": "Sternal plating for primary and secondary sternal closure; can it improve sternal stability?", "context": "BACKGROUND: Sternal instability with mediastinitis is a very serious complication after median sternotomy. Biomechanical studies have suggested superiority of rigid plate fixation over wire cerclage for sternal fixation. This study tests the hypothesis that sternal closure stability can be improved by adding plate fixation in a human cadaver model.\n\nMETHODS: Midline sternotomy was performed in 18 human cadavers. Four sternal closure techniques were tested: (1) approximation with six interrupted steel wires; (2) approximation with six interrupted cables; (3) closure 1 (wires) or 2 (cables) reinforced with a transverse sternal plate at the sixth rib; (4) Closure using 4 sternal plates alone. Intrathoracic pressure was increased in all techniques while sternal separation was measured by three pairs of sonomicrometry crystals fixed at the upper, middle and lower parts of the sternum until 2.0 mm separation was detected. Differences in displacement pressures were analyzed using repeated measures ANOVA and Regression Coefficients.\n\nRESULTS: Intrathoracic pressure required to cause 2.0 mm separation increased significantly from 183.3 +/- 123.9 to 301.4 +/- 204.5 in wires/cables alone vs. wires/cables plus one plate respectively, and to 355.0 +/- 210.4 in the 4 plates group (p<0.05). Regression Coefficients (95% CI) were 120 (47-194) and 142 (66-219) respectively for the plate groups.", "ground_truth": {"decision": "yes", "answer": "Transverse sternal plating with 1 or 4 plates significantly improves sternal stability closure in human cadaver model. Adding a single sternal plate to primary closure improves the strength of sternal closure with traditional wiring potentially reducing the risk of sternal dehiscence and could be considered in high risk patients.", "evidence": ["Intrathoracic pressure required to cause 2.0 mm separation increased significantly from 183.3 +/- 123.9 to 301.4 +/- 204.5 in wires/cables alone vs. wires/cables plus one plate respectively, and to 355.0 +/- 210.4 in the 4 plates group (p<0.05). Regression Coefficients (95% CI) were 120 (47-194) and 142 (66-219) respectively for the plate groups."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Sternal instability with mediastinitis is a very serious complication after median sternotomy. Biomechanical studies have suggested superiority of rigid plate fixation over wire cerclage for sternal fixation. This study tests the hypothesis that sternal closure stability can be improved by adding plate fixation in a human cadaver model.\n\nMETHODS: Midline sternotomy was performed in 18 human cadavers. Four sternal closure techniques were tested: (1) approximation with six interrupted steel wires; (2) approximation with six interrupted cables; (3) closure 1 (wires) or 2 (cables) reinforced with a transverse sternal plate at the sixth rib; (4) Closure using 4 sternal plates alone. Intrathoracic pressure was increased in all techniques while sternal separation was measured by three pairs of sonomicrometry crystals fixed at the upper, middle and lower parts of the sternum until 2.0 mm separation was detected. Differences in displacement pressures were analyzed using repeated measures ANOVA and Regression Coefficients.\n\nRESULTS: Intrathoracic pressure required to cause 2.0 mm separation increased significantly from 183.3 +/- 123.9 to 301.4 +/- 204.5 in wires/cables alone vs. wires/cables plus one plate respectively, and to 355.0 +/- 210.4 in the 4 plates group (p<0.05). Regression Coefficients (95% CI) were 120 (47-194) and 142 (66-219) respectively for the plate groups.\n\nBiomedical Question:\nSternal plating for primary and secondary sternal closure; can it improve sternal stability?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Transverse sternal plating with 1 or 4 plates significantly improves sternal stability closure in human cadaver model. Adding a single sternal plate to primary closure improves the strength of sternal closure with traditional wiring potentially reducing the risk of sternal dehiscence and could be considered in high risk patients.\",\n  \"evidence\": [\n    \"Intrathoracic pressure required to cause 2.0 mm separation increased significantly from 183.3 +/- 123.9 to 301.4 +/- 204.5 in wires/cables alone vs. wires/cables plus one plate respectively, and to 355.0 +/- 210.4 in the 4 plates group (p<0.05). Regression Coefficients (95% CI) were 120 (47-194) and 142 (66-219) respectively for the plate groups.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_12484580", "pmid": "12484580", "task": "evidence_qa", "question": "Informed consent for total hip arthroplasty: does a written information sheet improve recall by patients?", "context": "OBJECTIVE: To ascertain whether a written information sheet is acceptable to patients and improves recall of the consent interview.\n\nDESIGN: Prospective randomised controlled study using questionnaires, comparing a group of patients given information in a written sheet with appropriate explanation to a group given verbal information alone.\n\nSETTING: A specialist orthopaedic surgery unit.\n\nPATIENTS: The test group was 126 patients undergoing revision or primary total hip arthroplasty; 65 patients were given information verbally, 61 patients were given written information.\n\nOUTCOME MEASURE: Patients' recall of information given, tested with a questionnaire completed on admission (mean of 18 days later).\n\nRESULTS: The patients receiving written information scored significantly higher (48% correct answers) than the patients receiving verbal information (38% correct answers).", "ground_truth": {"decision": "yes", "answer": "Written information sheets contribute to the process of informed consent. As patients' recall of information is generally poor, the sheets may also be useful medicolegally, as a permanent record of what was discussed.", "evidence": ["The patients receiving written information scored significantly higher (48% correct answers) than the patients receiving verbal information (38% correct answers)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: To ascertain whether a written information sheet is acceptable to patients and improves recall of the consent interview.\n\nDESIGN: Prospective randomised controlled study using questionnaires, comparing a group of patients given information in a written sheet with appropriate explanation to a group given verbal information alone.\n\nSETTING: A specialist orthopaedic surgery unit.\n\nPATIENTS: The test group was 126 patients undergoing revision or primary total hip arthroplasty; 65 patients were given information verbally, 61 patients were given written information.\n\nOUTCOME MEASURE: Patients' recall of information given, tested with a questionnaire completed on admission (mean of 18 days later).\n\nRESULTS: The patients receiving written information scored significantly higher (48% correct answers) than the patients receiving verbal information (38% correct answers).\n\nBiomedical Question:\nInformed consent for total hip arthroplasty: does a written information sheet improve recall by patients?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Written information sheets contribute to the process of informed consent. As patients' recall of information is generally poor, the sheets may also be useful medicolegally, as a permanent record of what was discussed.\",\n  \"evidence\": [\n    \"The patients receiving written information scored significantly higher (48% correct answers) than the patients receiving verbal information (38% correct answers).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_26518378", "pmid": "26518378", "task": "evidence_qa", "question": "Are Reviewers' Scores Influenced by Citations to Their Own Work?", "context": "STUDY OBJECTIVE: Academic medical researchers are judged by how often their publications are cited in the literature. When serving as journal reviewers, they may be more favorably disposed to manuscripts that cite their work. We investigate whether manuscripts that contain a citation to the reviewer's work receive higher evaluations than those that do not and whether peer reviewers encourage authors to cite that reviewer's work.\n\nMETHODS: We analyzed all research manuscripts submitted in 2012 to Annals of Emergency Medicine to determine whether they contained citations to each reviewer's work. To determine whether citation affected reviewer scores, we obtained each reviewer's score of the manuscript's overall desirability (1=worst to 5=best) and used descriptive statistics and regression modeling to compare scores of cited and noncited reviewers. We also enumerated how often reviewers suggested that authors add citations to the reviewer's work or other work.\n\nRESULTS: There were 395 manuscripts and 999 corresponding reviews with an manuscript desirability score. The 83 reviews by cited reviewers (8.3%) had a mean score of 2.8 (SD 1.4); the 916 reviews by noncited reviewers (91.7%), 2.5 (1.2; Δ=0.3; 95% confidence interval [CI] 0 to 0.6). The mean score in the 117 reviews of the noncited reviewers of the 57 manuscripts that had both cited and noncited reviewers was 2.9 (SD 1.2) compared with 2.9 (SD 1.1) for the 68 reviews by cited reviewers (Δ=0; 95% CI -0.3 to 0.4). In the final ordinal regression model, the unadjusted OR for the manuscript desirability score was 1.6 (95% CI 1.0 to 2.7); when adjusting for the manuscripts' mean desirability score, it was 1.4 (95% CI 0.8 to 2.2), demonstrating that manuscript quality was a confounder. Authors were asked to add a citation to the reviewer's work in 28 reviews (3%) but to others' work in 98 (10%).", "ground_truth": {"decision": "yes", "answer": "In a leading specialty journal, cited reviewers gave higher scores than noncited reviewers. However, this was likely due to their being assigned higher-quality manuscripts and not because they were cited in the manuscript. Reviewer requests that their work be cited were rare.", "evidence": ["There were 395 manuscripts and 999 corresponding reviews with an manuscript desirability score. The 83 reviews by cited reviewers (8.3%) had a mean score of 2.8 (SD 1.4); the 916 reviews by noncited reviewers (91.7%), 2.5 (1.2; Δ=0.3; 95% confidence interval [CI] 0 to 0.6). The mean score in the 117 reviews of the noncited reviewers of the 57 manuscripts that had both cited and noncited reviewers was 2.9 (SD 1.2) compared with 2.9 (SD 1.1) for the 68 reviews by cited reviewers (Δ=0; 95% CI -0.3 to 0.4). In the final ordinal regression model, the unadjusted OR for the manuscript desirability score was 1.6 (95% CI 1.0 to 2.7); when adjusting for the manuscripts' mean desirability score, it was 1.4 (95% CI 0.8 to 2.2), demonstrating that manuscript quality was a confounder. Authors were asked to add a citation to the reviewer's work in 28 reviews (3%) but to others' work in 98 (10%)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nSTUDY OBJECTIVE: Academic medical researchers are judged by how often their publications are cited in the literature. When serving as journal reviewers, they may be more favorably disposed to manuscripts that cite their work. We investigate whether manuscripts that contain a citation to the reviewer's work receive higher evaluations than those that do not and whether peer reviewers encourage authors to cite that reviewer's work.\n\nMETHODS: We analyzed all research manuscripts submitted in 2012 to Annals of Emergency Medicine to determine whether they contained citations to each reviewer's work. To determine whether citation affected reviewer scores, we obtained each reviewer's score of the manuscript's overall desirability (1=worst to 5=best) and used descriptive statistics and regression modeling to compare scores of cited and noncited reviewers. We also enumerated how often reviewers suggested that authors add citations to the reviewer's work or other work.\n\nRESULTS: There were 395 manuscripts and 999 corresponding reviews with an manuscript desirability score. The 83 reviews by cited reviewers (8.3%) had a mean score of 2.8 (SD 1.4); the 916 reviews by noncited reviewers (91.7%), 2.5 (1.2; Δ=0.3; 95% confidence interval [CI] 0 to 0.6). The mean score in the 117 reviews of the noncited reviewers of the 57 manuscripts that had both cited and noncited reviewers was 2.9 (SD 1.2) compared with 2.9 (SD 1.1) for the 68 reviews by cited reviewers (Δ=0; 95% CI -0.3 to 0.4). In the final ordinal regression model, the unadjusted OR for the manuscript desirability score was 1.6 (95% CI 1.0 to 2.7); when adjusting for the manuscripts' mean desirability score, it was 1.4 (95% CI 0.8 to 2.2), demonstrating that manuscript quality was a confounder. Authors were asked to add a citation to the reviewer's work in 28 reviews (3%) but to others' work in 98 (10%).\n\nBiomedical Question:\nAre Reviewers' Scores Influenced by Citations to Their Own Work?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"In a leading specialty journal, cited reviewers gave higher scores than noncited reviewers. However, this was likely due to their being assigned higher-quality manuscripts and not because they were cited in the manuscript. Reviewer requests that their work be cited were rare.\",\n  \"evidence\": [\n    \"There were 395 manuscripts and 999 corresponding reviews with an manuscript desirability score. The 83 reviews by cited reviewers (8.3%) had a mean score of 2.8 (SD 1.4); the 916 reviews by noncited reviewers (91.7%), 2.5 (1.2; Δ=0.3; 95% confidence interval [CI] 0 to 0.6). The mean score in the 117 reviews of the noncited reviewers of the 57 manuscripts that had both cited and noncited reviewers was 2.9 (SD 1.2) compared with 2.9 (SD 1.1) for the 68 reviews by cited reviewers (Δ=0; 95% CI -0.3 to 0.4). In the final ordinal regression model, the unadjusted OR for the manuscript desirability score was 1.6 (95% CI 1.0 to 2.7); when adjusting for the manuscripts' mean desirability score, it was 1.4 (95% CI 0.8 to 2.2), demonstrating that manuscript quality was a confounder. Authors were asked to add a citation to the reviewer's work in 28 reviews (3%) but to others' work in 98 (10%).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_18534072", "pmid": "18534072", "task": "evidence_qa", "question": "Do general practice characteristics influence uptake of an information technology (IT) innovation in primary care?", "context": "INTRODUCTION: Recent evaluations of IT innovations in primary care have highlighted variations between centres and practices in uptake and use. We evaluated whether structural characteristics of a general practice were associated with variations in use of a web-based clinical information system underpinning a Managed Clinical Network in diabetes, between the years 2001 and 2003.\n\nMETHODS: Using a computerised audit trail, we calculated the numbers of web-based operations that occurred in each practice, stratified by staff type and year, and adjusted for the numbers of registered diabetic patients. In regression analyses, we determined whether total use was associated with structural characteristics of the practice (total list size, training status, numbers of GPs (general practitioners), mean age of the GPs, numbers of female GPs, level of deprivation of the population and whether staff had received advanced training in diabetes care).\n\nRESULTS: Initially there were a few practices which made very frequent use of the information system, with relatively high numbers of practices using the facility infrequently. However, overall use gradually became more evenly spread. This effect was particularly evident among nurse users. Frequent use by GPs was evident in only a small number of practices, with mean GP use decreasing over the three years. In linear regression analyses, none of the general practice variables were associated with online use, either overall or stratified by staff type, except for the numbers of diabetes-educated staff. This was consistently associated with increased use by nurses and GPs.", "ground_truth": {"decision": "no", "answer": "The analyses show that structural characteristics of a practice are not associated with uptake of a new IT facility, but that its use may be influenced by post-graduate education in the relevant clinical condition. For this diabetes system at least, practice nurse use was critical in spreading uptake beyond initial GP enthusiasts and for sustained and rising use in subsequent years.", "evidence": ["Initially there were a few practices which made very frequent use of the information system, with relatively high numbers of practices using the facility infrequently. However, overall use gradually became more evenly spread. This effect was particularly evident among nurse users. Frequent use by GPs was evident in only a small number of practices, with mean GP use decreasing over the three years. In linear regression analyses, none of the general practice variables were associated with online use, either overall or stratified by staff type, except for the numbers of diabetes-educated staff. This was consistently associated with increased use by nurses and GPs."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nINTRODUCTION: Recent evaluations of IT innovations in primary care have highlighted variations between centres and practices in uptake and use. We evaluated whether structural characteristics of a general practice were associated with variations in use of a web-based clinical information system underpinning a Managed Clinical Network in diabetes, between the years 2001 and 2003.\n\nMETHODS: Using a computerised audit trail, we calculated the numbers of web-based operations that occurred in each practice, stratified by staff type and year, and adjusted for the numbers of registered diabetic patients. In regression analyses, we determined whether total use was associated with structural characteristics of the practice (total list size, training status, numbers of GPs (general practitioners), mean age of the GPs, numbers of female GPs, level of deprivation of the population and whether staff had received advanced training in diabetes care).\n\nRESULTS: Initially there were a few practices which made very frequent use of the information system, with relatively high numbers of practices using the facility infrequently. However, overall use gradually became more evenly spread. This effect was particularly evident among nurse users. Frequent use by GPs was evident in only a small number of practices, with mean GP use decreasing over the three years. In linear regression analyses, none of the general practice variables were associated with online use, either overall or stratified by staff type, except for the numbers of diabetes-educated staff. This was consistently associated with increased use by nurses and GPs.\n\nBiomedical Question:\nDo general practice characteristics influence uptake of an information technology (IT) innovation in primary care?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"The analyses show that structural characteristics of a practice are not associated with uptake of a new IT facility, but that its use may be influenced by post-graduate education in the relevant clinical condition. For this diabetes system at least, practice nurse use was critical in spreading uptake beyond initial GP enthusiasts and for sustained and rising use in subsequent years.\",\n  \"evidence\": [\n    \"Initially there were a few practices which made very frequent use of the information system, with relatively high numbers of practices using the facility infrequently. However, overall use gradually became more evenly spread. This effect was particularly evident among nurse users. Frequent use by GPs was evident in only a small number of practices, with mean GP use decreasing over the three years. In linear regression analyses, none of the general practice variables were associated with online use, either overall or stratified by staff type, except for the numbers of diabetes-educated staff. This was consistently associated with increased use by nurses and GPs.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_9142039", "pmid": "9142039", "task": "evidence_qa", "question": "Does pediatric housestaff experience influence tests ordered for infants in the neonatal intensive care unit?", "context": "OBJECTIVE: To assess the relationship between the experience of pediatric housestaff and tests ordered on infants in the neonatal intensive care unit (ICU).\n\nDESIGN: Prospective, cohort study over one full academic year.\n\nSETTING: One academic Level III neonatal intensive care nursery.\n\nPATIENTS: Data were collected prospectively on all 785 infants admitted to the neonatal ICU from July 1993 to June 1994. These infants were cared for by 14 different categorical pediatric housestaff.\n\nMEASUREMENTS AND MAIN RESULTS: Our neonatal ICU has either a resident or an intern on-call by himself/herself at night, affording us a natural setting to compare intern vs. resident test ordering. The outcomes of interest were number of arterial blood gases, radiographs, and electrolytes ordered per infant by the on-call pediatric houseofficer, as tabulated the morning after the call night. Control variables included the severity-of-illness of the individual infant (using the Neonatal Therapeutic Intervention Scoring System), the workload of the houseofficer (number of patients, number of admissions), and supervision (rounding frequency and on-call attending). Controlling for the severity-of-illness of the infant, the workload on the call night, and supervision with multiple linear regression, we found that interns ordered significantly (p = .02) greater numbers of arterial blood gases per infant than residents, amounting to some 0.33 blood gases per infant per call night (3.22 vs. 2.89 arterial blood gases per infant per night). This increase of 0.33 blood gases per infant amounts to interns ordering $169 more arterial blood gases per call night at our institution. There was no difference between interns and residents in ordering radiographs or electrolytes.", "ground_truth": {"decision": "yes", "answer": "Interns order significantly more arterial blood gases per infant than junior and senior residents on-call in the neonatal ICU. Additional study is required to see if the experience of housestaff is associated with a broader array of neonatal outcomes, such as morbidity and mortality.", "evidence": ["Our neonatal ICU has either a resident or an intern on-call by himself/herself at night, affording us a natural setting to compare intern vs. resident test ordering. The outcomes of interest were number of arterial blood gases, radiographs, and electrolytes ordered per infant by the on-call pediatric houseofficer, as tabulated the morning after the call night. Control variables included the severity-of-illness of the individual infant (using the Neonatal Therapeutic Intervention Scoring System), the workload of the houseofficer (number of patients, number of admissions), and supervision (rounding frequency and on-call attending). Controlling for the severity-of-illness of the infant, the workload on the call night, and supervision with multiple linear regression, we found that interns ordered significantly (p = .02) greater numbers of arterial blood gases per infant than residents, amounting to some 0.33 blood gases per infant per call night (3.22 vs. 2.89 arterial blood gases per infant per night). This increase of 0.33 blood gases per infant amounts to interns ordering $169 more arterial blood gases per call night at our institution. There was no difference between interns and residents in ordering radiographs or electrolytes."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: To assess the relationship between the experience of pediatric housestaff and tests ordered on infants in the neonatal intensive care unit (ICU).\n\nDESIGN: Prospective, cohort study over one full academic year.\n\nSETTING: One academic Level III neonatal intensive care nursery.\n\nPATIENTS: Data were collected prospectively on all 785 infants admitted to the neonatal ICU from July 1993 to June 1994. These infants were cared for by 14 different categorical pediatric housestaff.\n\nMEASUREMENTS AND MAIN RESULTS: Our neonatal ICU has either a resident or an intern on-call by himself/herself at night, affording us a natural setting to compare intern vs. resident test ordering. The outcomes of interest were number of arterial blood gases, radiographs, and electrolytes ordered per infant by the on-call pediatric houseofficer, as tabulated the morning after the call night. Control variables included the severity-of-illness of the individual infant (using the Neonatal Therapeutic Intervention Scoring System), the workload of the houseofficer (number of patients, number of admissions), and supervision (rounding frequency and on-call attending). Controlling for the severity-of-illness of the infant, the workload on the call night, and supervision with multiple linear regression, we found that interns ordered significantly (p = .02) greater numbers of arterial blood gases per infant than residents, amounting to some 0.33 blood gases per infant per call night (3.22 vs. 2.89 arterial blood gases per infant per night). This increase of 0.33 blood gases per infant amounts to interns ordering $169 more arterial blood gases per call night at our institution. There was no difference between interns and residents in ordering radiographs or electrolytes.\n\nBiomedical Question:\nDoes pediatric housestaff experience influence tests ordered for infants in the neonatal intensive care unit?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Interns order significantly more arterial blood gases per infant than junior and senior residents on-call in the neonatal ICU. Additional study is required to see if the experience of housestaff is associated with a broader array of neonatal outcomes, such as morbidity and mortality.\",\n  \"evidence\": [\n    \"Our neonatal ICU has either a resident or an intern on-call by himself/herself at night, affording us a natural setting to compare intern vs. resident test ordering. The outcomes of interest were number of arterial blood gases, radiographs, and electrolytes ordered per infant by the on-call pediatric houseofficer, as tabulated the morning after the call night. Control variables included the severity-of-illness of the individual infant (using the Neonatal Therapeutic Intervention Scoring System), the workload of the houseofficer (number of patients, number of admissions), and supervision (rounding frequency and on-call attending). Controlling for the severity-of-illness of the infant, the workload on the call night, and supervision with multiple linear regression, we found that interns ordered significantly (p = .02) greater numbers of arterial blood gases per infant than residents, amounting to some 0.33 blood gases per infant per call night (3.22 vs. 2.89 arterial blood gases per infant per night). This increase of 0.33 blood gases per infant amounts to interns ordering $169 more arterial blood gases per call night at our institution. There was no difference between interns and residents in ordering radiographs or electrolytes.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_17259061", "pmid": "17259061", "task": "evidence_qa", "question": "Cigarettes and cinema: does parental restriction of R-rated movie viewing reduce adolescent smoking susceptibility?", "context": "PURPOSE: To examine the relationship between exposure to pro-smoking messages in media and susceptibility to smoking adoption among middle school students. The hypothesis that parental restriction of R-rated movie viewing is associated with lower adolescent smoking susceptibility was tested.\n\nMETHODS: A sample of 1687 6th-, 7th-, and 8th-grade students from four Wisconsin middle schools were surveyed about their use of cigarettes, exposure to smoking in media, their views of smoking, and peer smoking behaviors.\n\nRESULTS: An index of smoking susceptibility was created using measures of cigarette use and future intention to smoke. A zero-order correlation for parental restriction of R-rated movie viewing and smoking susceptibility showed a strong association (r = -.36, p<.001). A hierarchical logistic regression yielded odds ratios (ORs) for being susceptible to or having tried smoking for three levels of parental R-rated movie restriction. Results show that compared to full restriction, respondents with partial or no restriction were more likely to be susceptible to smoking (partial restriction: OR = 2.1, 95% CI = 1.5-2.8; no restriction: OR = 3.3, 95% CI = 2.3-4.6), when controlling for demographic factors, and family and friend smoking. Analyses using a measure of smoking prevalence as the dependent variable yielded similar results (partial restriction: OR = 1.5, 95% CI = 1.0-2.2; no restriction: OR = 2.5, 95% CI = 1.7-3.7).", "ground_truth": {"decision": "yes", "answer": "Parental restriction of R-rated movie viewing is associated with both lower adolescent smoking susceptibility and lower smoking rates.", "evidence": ["An index of smoking susceptibility was created using measures of cigarette use and future intention to smoke. A zero-order correlation for parental restriction of R-rated movie viewing and smoking susceptibility showed a strong association (r = -.36, p<.001). A hierarchical logistic regression yielded odds ratios (ORs) for being susceptible to or having tried smoking for three levels of parental R-rated movie restriction. Results show that compared to full restriction, respondents with partial or no restriction were more likely to be susceptible to smoking (partial restriction: OR = 2.1, 95% CI = 1.5-2.8; no restriction: OR = 3.3, 95% CI = 2.3-4.6), when controlling for demographic factors, and family and friend smoking. Analyses using a measure of smoking prevalence as the dependent variable yielded similar results (partial restriction: OR = 1.5, 95% CI = 1.0-2.2; no restriction: OR = 2.5, 95% CI = 1.7-3.7)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: To examine the relationship between exposure to pro-smoking messages in media and susceptibility to smoking adoption among middle school students. The hypothesis that parental restriction of R-rated movie viewing is associated with lower adolescent smoking susceptibility was tested.\n\nMETHODS: A sample of 1687 6th-, 7th-, and 8th-grade students from four Wisconsin middle schools were surveyed about their use of cigarettes, exposure to smoking in media, their views of smoking, and peer smoking behaviors.\n\nRESULTS: An index of smoking susceptibility was created using measures of cigarette use and future intention to smoke. A zero-order correlation for parental restriction of R-rated movie viewing and smoking susceptibility showed a strong association (r = -.36, p<.001). A hierarchical logistic regression yielded odds ratios (ORs) for being susceptible to or having tried smoking for three levels of parental R-rated movie restriction. Results show that compared to full restriction, respondents with partial or no restriction were more likely to be susceptible to smoking (partial restriction: OR = 2.1, 95% CI = 1.5-2.8; no restriction: OR = 3.3, 95% CI = 2.3-4.6), when controlling for demographic factors, and family and friend smoking. Analyses using a measure of smoking prevalence as the dependent variable yielded similar results (partial restriction: OR = 1.5, 95% CI = 1.0-2.2; no restriction: OR = 2.5, 95% CI = 1.7-3.7).\n\nBiomedical Question:\nCigarettes and cinema: does parental restriction of R-rated movie viewing reduce adolescent smoking susceptibility?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Parental restriction of R-rated movie viewing is associated with both lower adolescent smoking susceptibility and lower smoking rates.\",\n  \"evidence\": [\n    \"An index of smoking susceptibility was created using measures of cigarette use and future intention to smoke. A zero-order correlation for parental restriction of R-rated movie viewing and smoking susceptibility showed a strong association (r = -.36, p<.001). A hierarchical logistic regression yielded odds ratios (ORs) for being susceptible to or having tried smoking for three levels of parental R-rated movie restriction. Results show that compared to full restriction, respondents with partial or no restriction were more likely to be susceptible to smoking (partial restriction: OR = 2.1, 95% CI = 1.5-2.8; no restriction: OR = 3.3, 95% CI = 2.3-4.6), when controlling for demographic factors, and family and friend smoking. Analyses using a measure of smoking prevalence as the dependent variable yielded similar results (partial restriction: OR = 1.5, 95% CI = 1.0-2.2; no restriction: OR = 2.5, 95% CI = 1.7-3.7).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmed_42773464", "pmid": "42773464", "task": "evidence_summary", "question": "What was concluded regarding: Effects of pain neuroscience education combined with blood flow restriction training on chronic postoperative pain following total knee arthroplasty: a randomized controlled trial protocol.?", "context": "INTRODUCTION: Chronic postsurgical pain (CPSP) remains a major clinical challenge following total knee arthroplasty (TKA), with psychological maladaptation and persistent neuromuscular dysfunction considered key contributors to ongoing pain and disability. Pain neuroscience education (PNE) may improve maladaptive pain cognitions, whereas blood flow restriction training (BFRT) can enhance muscle function and induce exercise-related hypoalgesia. Although both interventions have shown potential benefits in chronic pain rehabilitation, no randomized controlled trial has investigated the combined efficacy of these two interventions in patients with CPSP after TKA. This study aims to determine whether combined PNE + BFRT produces greater improvements in pain and function in this population.\n\nMETHODS AND ANALYSIS: This study is a single-blind, four-arm, parallel-group randomized controlled trial. A total of 148 participants will be randomly assigned (1:1:1:1) to the Control, PNE, BFRT, or combined PNE + BFRT group. PNE will be delivered in two structured sessions. BFRT involves a 12-week supervised low-load resistance training program. The primary outcome is the group-by-time interaction effect on KOOS4 over time. Secondary outcomes include pain intensity (NRS), global perceived effect, pain distribution, psychological measures (HADS, PCS), physical performance (40-m fast-paced walk test, stair climb test, and 30-s chair stand test), and neuromuscular strength. Assessments will be conducted at baseline, post-intervention (12 weeks), and at 12-week, 24-week, and 36-week follow-ups. Data will be analyzed using linear mixed-effects models under the intention-to-treat principle.\n\nETHICS AND DISSEMINATION: Ethics approval has been obtained from the Ethics Committee of the Chengdu Sport University, with permission number CDSUEC2026- 177. This study has been registered with the Chinese Clinical Trial Registry (ChiCTR2600125544). Written informed consent will be obtained from all participants prior to enrollment.\n\nTRIAL REGISTRATION NUMBER: Chinese Clinical Trial Registry ChiCTR2600125544, registered on May 28, 2026.", "ground_truth": {"decision": "maybe", "answer": "The study reports findings regarding 'Effects of pain neuroscience education combined with blood flow restriction training on chronic postoperative pain following total knee arthroplasty: a randomized controlled trial protocol.'. Details: INTRODUCTION: Chronic postsurgical pain (CPSP) remains a major clinical challenge following total knee arthroplasty (TKA), with psychological maladaptation and persistent neuromuscular dysfunction considered key contributors to ongoing pain and disability. Pain neuroscience education (PNE) may impro...", "evidence": ["INTRODUCTION: Chronic postsurgical pain (CPSP) remains a major clinical challenge following total knee arthroplasty (TKA), with psychological maladaptation and persistent neuromuscular dysfunction con..."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_summary\n\nEvidence Context:\nINTRODUCTION: Chronic postsurgical pain (CPSP) remains a major clinical challenge following total knee arthroplasty (TKA), with psychological maladaptation and persistent neuromuscular dysfunction considered key contributors to ongoing pain and disability. Pain neuroscience education (PNE) may improve maladaptive pain cognitions, whereas blood flow restriction training (BFRT) can enhance muscle function and induce exercise-related hypoalgesia. Although both interventions have shown potential benefits in chronic pain rehabilitation, no randomized controlled trial has investigated the combined efficacy of these two interventions in patients with CPSP after TKA. This study aims to determine whether combined PNE + BFRT produces greater improvements in pain and function in this population.\n\nMETHODS AND ANALYSIS: This study is a single-blind, four-arm, parallel-group randomized controlled trial. A total of 148 participants will be randomly assigned (1:1:1:1) to the Control, PNE, BFRT, or combined PNE + BFRT group. PNE will be delivered in two structured sessions. BFRT involves a 12-week supervised low-load resistance training program. The primary outcome is the group-by-time interaction effect on KOOS4 over time. Secondary outcomes include pain intensity (NRS), global perceived effect, pain distribution, psychological measures (HADS, PCS), physical performance (40-m fast-paced walk test, stair climb test, and 30-s chair stand test), and neuromuscular strength. Assessments will be conducted at baseline, post-intervention (12 weeks), and at 12-week, 24-week, and 36-week follow-ups. Data will be analyzed using linear mixed-effects models under the intention-to-treat principle.\n\nETHICS AND DISSEMINATION: Ethics approval has been obtained from the Ethics Committee of the Chengdu Sport University, with permission number CDSUEC2026- 177. This study has been registered with the Chinese Clinical Trial Registry (ChiCTR2600125544). Written informed consent will be obtained from all participants prior to enrollment.\n\nTRIAL REGISTRATION NUMBER: Chinese Clinical Trial Registry ChiCTR2600125544, registered on May 28, 2026.\n\nBiomedical Question:\nWhat was concluded regarding: Effects of pain neuroscience education combined with blood flow restriction training on chronic postoperative pain following total knee arthroplasty: a randomized controlled trial protocol.?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"The study reports findings regarding 'Effects of pain neuroscience education combined with blood flow restriction training on chronic postoperative pain following total knee arthroplasty: a randomized controlled trial protocol.'. Details: INTRODUCTION: Chronic postsurgical pain (CPSP) remains a major clinical challenge following total knee arthroplasty (TKA), with psychological maladaptation and persistent neuromuscular dysfunction considered key contributors to ongoing pain and disability. Pain neuroscience education (PNE) may impro...\",\n  \"evidence\": [\n    \"INTRODUCTION: Chronic postsurgical pain (CPSP) remains a major clinical challenge following total knee arthroplasty (TKA), with psychological maladaptation and persistent neuromuscular dysfunction con...\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_12970636", "pmid": "12970636", "task": "evidence_qa", "question": "Does early discharge with nurse home visits affect adequacy of newborn metabolic screening?", "context": "OBJECTIVE: To examine the impact of early discharge on newborn metabolic screening.\n\nSTUDY DESIGN: Metabolic screening results were obtained from the Alabama State Lab for all infants born at our hospital between 8/1/97, and 1/31/99, and were matched with an existing database of early discharge infants. An early newborn discharge was defined as a discharge between 24 and 47 hours of age. Metabolic screening tests included phenylketonuria (PKU), hypothyroidism, and congenital adrenal hyperplasia (CAH). Early discharge and traditional stay infants were compared to determine the percentage of newborns screened and the timing of the first adequate specimen.\n\nRESULTS: The state laboratory received specimens from 3860 infants; 1324 were on early discharge newborns and 2536 infants in the traditional stay group. At least one filter paper test (PKU, hypothyroidism, and CAH) was collected on 99.2% of early discharge infants and 96.0% of traditional stay infants (P<.0001). Early discharge infants had a higher rate of initial filter paper specimens being inadequate (22.9%) compared with traditional stay infants (14.3%, P<.0001) but had a higher rate of repeat specimens when the initial specimen was inadequate (85.0% early discharge vs 75.3% traditional stay, P=.002). The early discharge group was more likely to have an adequate specimen within the first 9 days of life (1001, 98.8% early discharge vs 2016, 96.7% traditional stay, P=.0005).", "ground_truth": {"decision": "no", "answer": "In this well established early discharge program with nurse home visits, newborn metabolic screening is not compromised by early discharge.", "evidence": ["The state laboratory received specimens from 3860 infants; 1324 were on early discharge newborns and 2536 infants in the traditional stay group. At least one filter paper test (PKU, hypothyroidism, and CAH) was collected on 99.2% of early discharge infants and 96.0% of traditional stay infants (P<.0001). Early discharge infants had a higher rate of initial filter paper specimens being inadequate (22.9%) compared with traditional stay infants (14.3%, P<.0001) but had a higher rate of repeat specimens when the initial specimen was inadequate (85.0% early discharge vs 75.3% traditional stay, P=.002). The early discharge group was more likely to have an adequate specimen within the first 9 days of life (1001, 98.8% early discharge vs 2016, 96.7% traditional stay, P=.0005)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: To examine the impact of early discharge on newborn metabolic screening.\n\nSTUDY DESIGN: Metabolic screening results were obtained from the Alabama State Lab for all infants born at our hospital between 8/1/97, and 1/31/99, and were matched with an existing database of early discharge infants. An early newborn discharge was defined as a discharge between 24 and 47 hours of age. Metabolic screening tests included phenylketonuria (PKU), hypothyroidism, and congenital adrenal hyperplasia (CAH). Early discharge and traditional stay infants were compared to determine the percentage of newborns screened and the timing of the first adequate specimen.\n\nRESULTS: The state laboratory received specimens from 3860 infants; 1324 were on early discharge newborns and 2536 infants in the traditional stay group. At least one filter paper test (PKU, hypothyroidism, and CAH) was collected on 99.2% of early discharge infants and 96.0% of traditional stay infants (P<.0001). Early discharge infants had a higher rate of initial filter paper specimens being inadequate (22.9%) compared with traditional stay infants (14.3%, P<.0001) but had a higher rate of repeat specimens when the initial specimen was inadequate (85.0% early discharge vs 75.3% traditional stay, P=.002). The early discharge group was more likely to have an adequate specimen within the first 9 days of life (1001, 98.8% early discharge vs 2016, 96.7% traditional stay, P=.0005).\n\nBiomedical Question:\nDoes early discharge with nurse home visits affect adequacy of newborn metabolic screening?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"In this well established early discharge program with nurse home visits, newborn metabolic screening is not compromised by early discharge.\",\n  \"evidence\": [\n    \"The state laboratory received specimens from 3860 infants; 1324 were on early discharge newborns and 2536 infants in the traditional stay group. At least one filter paper test (PKU, hypothyroidism, and CAH) was collected on 99.2% of early discharge infants and 96.0% of traditional stay infants (P<.0001). Early discharge infants had a higher rate of initial filter paper specimens being inadequate (22.9%) compared with traditional stay infants (14.3%, P<.0001) but had a higher rate of repeat specimens when the initial specimen was inadequate (85.0% early discharge vs 75.3% traditional stay, P=.002). The early discharge group was more likely to have an adequate specimen within the first 9 days of life (1001, 98.8% early discharge vs 2016, 96.7% traditional stay, P=.0005).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_23052500", "pmid": "23052500", "task": "evidence_qa", "question": "Staging laparoscopy in patients with hepatocellular carcinoma: is it useful?", "context": "BACKGROUND: Staging laparoscopy (SL) is not regularly performed for patients with hepatocellular carcinoma (HCC). It may change treatment strategy, preventing unnecessary open exploration. An additional advantage of SL is possible biopsy of the nontumorous liver to assess fibrosis/cirrhosis. This study aimed to determine whether SL for patients with HCC still is useful.\n\nMETHODS: Patients with HCC who underwent SL between January 1999 and December 2011 were analyzed. Their demographics, preoperative imaging studies, surgical findings, and histology were assessed.\n\nRESULTS: The 56 patients (34 men and 22 women; mean age, 60 ± 14 years) in this study underwent SL for assessment of extensive disease or metastases. For two patients, SL was unsuccessful because of intraabdominal adhesions. For four patients (7.1 %), SL showed unresectability because of metastases (n = 1), tumor progression (n = 1), or severe cirrhosis in the contralateral lobe (n = 2). An additional five patients did not undergo laparotomy due to disease progression detected on imaging after SL. Exploratory laparotomy for the remaining 47 patients showed 6 (13 %) additional unresectable tumors due to advanced tumor (n = 5) or nodal metastases (n = 1). Consequently, the yield of SL was 7 % (95 % confidence interval (CI), 3-17 %), and the accuracy was 27 % (95 % CI, 11-52 %). A biopsy of the contralateral liver was performed for 45 patients who underwent SL, leading to changes in management for 4 patients (17 %) with cirrhosis.", "ground_truth": {"decision": "no", "answer": "The overall yield of SL for HCC was 7 %, and the accuracy was 27 %. When accurate imaging methods are available and additional percutaneous liver biopsy is implemented as a standard procedure in the preoperative workup of patients with HCC, the benefit of SL will become even less.", "evidence": ["The 56 patients (34 men and 22 women; mean age, 60 ± 14 years) in this study underwent SL for assessment of extensive disease or metastases. For two patients, SL was unsuccessful because of intraabdominal adhesions. For four patients (7.1 %), SL showed unresectability because of metastases (n = 1), tumor progression (n = 1), or severe cirrhosis in the contralateral lobe (n = 2). An additional five patients did not undergo laparotomy due to disease progression detected on imaging after SL. Exploratory laparotomy for the remaining 47 patients showed 6 (13 %) additional unresectable tumors due to advanced tumor (n = 5) or nodal metastases (n = 1). Consequently, the yield of SL was 7 % (95 % confidence interval (CI), 3-17 %), and the accuracy was 27 % (95 % CI, 11-52 %). A biopsy of the contralateral liver was performed for 45 patients who underwent SL, leading to changes in management for 4 patients (17 %) with cirrhosis."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Staging laparoscopy (SL) is not regularly performed for patients with hepatocellular carcinoma (HCC). It may change treatment strategy, preventing unnecessary open exploration. An additional advantage of SL is possible biopsy of the nontumorous liver to assess fibrosis/cirrhosis. This study aimed to determine whether SL for patients with HCC still is useful.\n\nMETHODS: Patients with HCC who underwent SL between January 1999 and December 2011 were analyzed. Their demographics, preoperative imaging studies, surgical findings, and histology were assessed.\n\nRESULTS: The 56 patients (34 men and 22 women; mean age, 60 ± 14 years) in this study underwent SL for assessment of extensive disease or metastases. For two patients, SL was unsuccessful because of intraabdominal adhesions. For four patients (7.1 %), SL showed unresectability because of metastases (n = 1), tumor progression (n = 1), or severe cirrhosis in the contralateral lobe (n = 2). An additional five patients did not undergo laparotomy due to disease progression detected on imaging after SL. Exploratory laparotomy for the remaining 47 patients showed 6 (13 %) additional unresectable tumors due to advanced tumor (n = 5) or nodal metastases (n = 1). Consequently, the yield of SL was 7 % (95 % confidence interval (CI), 3-17 %), and the accuracy was 27 % (95 % CI, 11-52 %). A biopsy of the contralateral liver was performed for 45 patients who underwent SL, leading to changes in management for 4 patients (17 %) with cirrhosis.\n\nBiomedical Question:\nStaging laparoscopy in patients with hepatocellular carcinoma: is it useful?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"The overall yield of SL for HCC was 7 %, and the accuracy was 27 %. When accurate imaging methods are available and additional percutaneous liver biopsy is implemented as a standard procedure in the preoperative workup of patients with HCC, the benefit of SL will become even less.\",\n  \"evidence\": [\n    \"The 56 patients (34 men and 22 women; mean age, 60 ± 14 years) in this study underwent SL for assessment of extensive disease or metastases. For two patients, SL was unsuccessful because of intraabdominal adhesions. For four patients (7.1 %), SL showed unresectability because of metastases (n = 1), tumor progression (n = 1), or severe cirrhosis in the contralateral lobe (n = 2). An additional five patients did not undergo laparotomy due to disease progression detected on imaging after SL. Exploratory laparotomy for the remaining 47 patients showed 6 (13 %) additional unresectable tumors due to advanced tumor (n = 5) or nodal metastases (n = 1). Consequently, the yield of SL was 7 % (95 % confidence interval (CI), 3-17 %), and the accuracy was 27 % (95 % CI, 11-52 %). A biopsy of the contralateral liver was performed for 45 patients who underwent SL, leading to changes in management for 4 patients (17 %) with cirrhosis.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_24073931", "pmid": "24073931", "task": "evidence_qa", "question": "Is the covering of the resection margin after distal pancreatectomy advantageous?", "context": "BACKGROUND: In recent years, many advances in pancreatic surgery have been achieved. Nevertheless, the rate of pancreatic fistula following pancreatic tail resection does not differ between various techniques, still reaching up to 30% in prospective multicentric studies. Taking into account contradictory results concerning the usefulness of covering resection margins after distal pancreatectomy, we sought to perform a systematic, retrospective analysis of patients that underwent distal pancreatectomy at our center.\n\nMETHODS: We retrospectively analysed the data of 74 patients that underwent distal pancreatectomy between 2001 and 2011 at the community hospital in Neuss. Demographic factors, indications, postoperative complications, surgical or interventional revisions, and length of hospital stay were registered to compare the outcome of patients undergoing distal pancreatectomy with coverage of the resection margins vs. patients undergoing distal pancreatectomy without coverage of the resection margins. Differences between groups were calculated using Fisher's exact and Mann-Whitney U test.\n\nRESULTS: Main indications for pancreatic surgery were insulinoma (n=18, 24%), ductal adenocarcinoma (n=9, 12%), non-single-insulinoma-pancreatogenic-hypoglycemia-syndrome (NSIPHS) (n=8, 11%), and pancreatic cysts with pancreatitis (n=8, 11%). In 39 of 74 (53%) patients no postoperative complications were noted. In detail we found that 23/42 (55%) patients with coverage vs. 16/32 (50%) without coverage of the resection margins had no postoperative complications. The most common complications were pancreatic fistulas in eleven patients (15%), and postoperative bleeding in nine patients (12%). Pancreatic fistulas occurred in patients without coverage of the resection margins in 7/32 (22%) vs. 4/42 (1011%) with coverage are of the resection margins, yet without reaching statistical significance. Postoperative bleeding ensued with equal frequency in both groups (12% with coverage versus 13% without coverage of the resection margins). The reoperation rate was 8%. The hospital stay for patients without coverage was 13 days (5-60) vs. 17 days (8-60) for patients with coverage.", "ground_truth": {"decision": "no", "answer": "The results show no significant difference in the fistula rate after covering of the resection margin after distal pancreatectomy, which contributes to the picture of an unsolved problem.", "evidence": ["Main indications for pancreatic surgery were insulinoma (n=18, 24%), ductal adenocarcinoma (n=9, 12%), non-single-insulinoma-pancreatogenic-hypoglycemia-syndrome (NSIPHS) (n=8, 11%), and pancreatic cysts with pancreatitis (n=8, 11%). In 39 of 74 (53%) patients no postoperative complications were noted. In detail we found that 23/42 (55%) patients with coverage vs. 16/32 (50%) without coverage of the resection margins had no postoperative complications. The most common complications were pancreatic fistulas in eleven patients (15%), and postoperative bleeding in nine patients (12%). Pancreatic fistulas occurred in patients without coverage of the resection margins in 7/32 (22%) vs. 4/42 (1011%) with coverage are of the resection margins, yet without reaching statistical significance. Postoperative bleeding ensued with equal frequency in both groups (12% with coverage versus 13% without coverage of the resection margins). The reoperation rate was 8%. The hospital stay for patients without coverage was 13 days (5-60) vs. 17 days (8-60) for patients with coverage."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: In recent years, many advances in pancreatic surgery have been achieved. Nevertheless, the rate of pancreatic fistula following pancreatic tail resection does not differ between various techniques, still reaching up to 30% in prospective multicentric studies. Taking into account contradictory results concerning the usefulness of covering resection margins after distal pancreatectomy, we sought to perform a systematic, retrospective analysis of patients that underwent distal pancreatectomy at our center.\n\nMETHODS: We retrospectively analysed the data of 74 patients that underwent distal pancreatectomy between 2001 and 2011 at the community hospital in Neuss. Demographic factors, indications, postoperative complications, surgical or interventional revisions, and length of hospital stay were registered to compare the outcome of patients undergoing distal pancreatectomy with coverage of the resection margins vs. patients undergoing distal pancreatectomy without coverage of the resection margins. Differences between groups were calculated using Fisher's exact and Mann-Whitney U test.\n\nRESULTS: Main indications for pancreatic surgery were insulinoma (n=18, 24%), ductal adenocarcinoma (n=9, 12%), non-single-insulinoma-pancreatogenic-hypoglycemia-syndrome (NSIPHS) (n=8, 11%), and pancreatic cysts with pancreatitis (n=8, 11%). In 39 of 74 (53%) patients no postoperative complications were noted. In detail we found that 23/42 (55%) patients with coverage vs. 16/32 (50%) without coverage of the resection margins had no postoperative complications. The most common complications were pancreatic fistulas in eleven patients (15%), and postoperative bleeding in nine patients (12%). Pancreatic fistulas occurred in patients without coverage of the resection margins in 7/32 (22%) vs. 4/42 (1011%) with coverage are of the resection margins, yet without reaching statistical significance. Postoperative bleeding ensued with equal frequency in both groups (12% with coverage versus 13% without coverage of the resection margins). The reoperation rate was 8%. The hospital stay for patients without coverage was 13 days (5-60) vs. 17 days (8-60) for patients with coverage.\n\nBiomedical Question:\nIs the covering of the resection margin after distal pancreatectomy advantageous?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"The results show no significant difference in the fistula rate after covering of the resection margin after distal pancreatectomy, which contributes to the picture of an unsolved problem.\",\n  \"evidence\": [\n    \"Main indications for pancreatic surgery were insulinoma (n=18, 24%), ductal adenocarcinoma (n=9, 12%), non-single-insulinoma-pancreatogenic-hypoglycemia-syndrome (NSIPHS) (n=8, 11%), and pancreatic cysts with pancreatitis (n=8, 11%). In 39 of 74 (53%) patients no postoperative complications were noted. In detail we found that 23/42 (55%) patients with coverage vs. 16/32 (50%) without coverage of the resection margins had no postoperative complications. The most common complications were pancreatic fistulas in eleven patients (15%), and postoperative bleeding in nine patients (12%). Pancreatic fistulas occurred in patients without coverage of the resection margins in 7/32 (22%) vs. 4/42 (1011%) with coverage are of the resection margins, yet without reaching statistical significance. Postoperative bleeding ensued with equal frequency in both groups (12% with coverage versus 13% without coverage of the resection margins). The reoperation rate was 8%. The hospital stay for patients without coverage was 13 days (5-60) vs. 17 days (8-60) for patients with coverage.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_14745753", "pmid": "14745753", "task": "evidence_qa", "question": "Is half-dose contrast-enhanced three-dimensional MR angiography sufficient for the abdominal aorta and pelvis?", "context": "PURPOSE: To evaluate the usefulness of half-dose contrast-enhanced magnetic resonance (MR) angiography for depicting the abdominal aorta and its major branches.\n\nMATERIALS AND METHODS: A total of 72 consecutive patients were randomly assigned to one of four groups that underwent MR angiography after receiving different concentrations (original or diluted to 50%) and total amounts (single or half-dose) of gadolinium chelate injected at different rates (1 or 0.5 mL/second). The signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) of the abdominal aorta and of the common and external iliac arteries were calculated, and two blinded readers rated the respective image qualities.\n\nRESULTS: The SNR and CNR of the abdominal aorta and the common iliac artery in the 0.5 mL/second groups were statistically significantly lower than those in the 1 mL/second groups. The differences in overall image quality across the four groups were not statistically significant.", "ground_truth": {"decision": "yes", "answer": "Half-dose MR angiography using diluted contrast medium injected at a rate of 1 mL/second depicted the abdominal aorta and its branches as clearly as using a full single dose.", "evidence": ["The SNR and CNR of the abdominal aorta and the common iliac artery in the 0.5 mL/second groups were statistically significantly lower than those in the 1 mL/second groups. The differences in overall image quality across the four groups were not statistically significant."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: To evaluate the usefulness of half-dose contrast-enhanced magnetic resonance (MR) angiography for depicting the abdominal aorta and its major branches.\n\nMATERIALS AND METHODS: A total of 72 consecutive patients were randomly assigned to one of four groups that underwent MR angiography after receiving different concentrations (original or diluted to 50%) and total amounts (single or half-dose) of gadolinium chelate injected at different rates (1 or 0.5 mL/second). The signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) of the abdominal aorta and of the common and external iliac arteries were calculated, and two blinded readers rated the respective image qualities.\n\nRESULTS: The SNR and CNR of the abdominal aorta and the common iliac artery in the 0.5 mL/second groups were statistically significantly lower than those in the 1 mL/second groups. The differences in overall image quality across the four groups were not statistically significant.\n\nBiomedical Question:\nIs half-dose contrast-enhanced three-dimensional MR angiography sufficient for the abdominal aorta and pelvis?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Half-dose MR angiography using diluted contrast medium injected at a rate of 1 mL/second depicted the abdominal aorta and its branches as clearly as using a full single dose.\",\n  \"evidence\": [\n    \"The SNR and CNR of the abdominal aorta and the common iliac artery in the 0.5 mL/second groups were statistically significantly lower than those in the 1 mL/second groups. The differences in overall image quality across the four groups were not statistically significant.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_21880023", "pmid": "21880023", "task": "evidence_qa", "question": "Does exercise during pregnancy prevent postnatal depression?", "context": "OBJECTIVE: To study whether exercise during pregnancy reduces the risk of postnatal depression.\n\nDESIGN: Randomized controlled trial.\n\nSETTING: Trondheim and Stavanger University Hospitals, Norway.\n\nPOPULATION AND SAMPLE: Eight hundred and fifty-five pregnant women were randomized to intervention or control groups.\n\nMETHODS: The intervention was a 12 week exercise program, including aerobic and strengthening exercises, conducted between week 20 and 36 of pregnancy. One weekly group session was led by physiotherapists, and home exercises were encouraged twice a week. Control women received regular antenatal care.\n\nMAIN OUTCOME MEASURES: Edinburgh Postnatal Depression Scale (EPDS) completed three months after birth. Scores of 10 or more and 13 or more suggested probable minor and major depression, respectively.\n\nRESULTS: Fourteen of 379 (3.7%) women in the intervention group and 17 of 340 (5.0%) in the control group had an EPDS score of ≥10 (p=0.46), and four of 379 (1.2%) women in the intervention group and eight of 340 (2.4%) in the control group had an EPDS score of ≥13 (p=0.25). Among women who did not exercise prior to pregnancy, two of 100 (2.0%) women in the intervention group and nine of 95 (9.5%) in the control group had an EPDS score of ≥10 (p=0.03).", "ground_truth": {"decision": "no", "answer": "We did not find a lower prevalence of high EPDS scores among women randomized to regular exercise during pregnancy compared with the control group. However, a subgroup of women in the intervention group who did not exercise regularly prior to pregnancy had a reduced risk of postnatal depression.", "evidence": ["Fourteen of 379 (3.7%) women in the intervention group and 17 of 340 (5.0%) in the control group had an EPDS score of ≥10 (p=0.46), and four of 379 (1.2%) women in the intervention group and eight of 340 (2.4%) in the control group had an EPDS score of ≥13 (p=0.25). Among women who did not exercise prior to pregnancy, two of 100 (2.0%) women in the intervention group and nine of 95 (9.5%) in the control group had an EPDS score of ≥10 (p=0.03)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nOBJECTIVE: To study whether exercise during pregnancy reduces the risk of postnatal depression.\n\nDESIGN: Randomized controlled trial.\n\nSETTING: Trondheim and Stavanger University Hospitals, Norway.\n\nPOPULATION AND SAMPLE: Eight hundred and fifty-five pregnant women were randomized to intervention or control groups.\n\nMETHODS: The intervention was a 12 week exercise program, including aerobic and strengthening exercises, conducted between week 20 and 36 of pregnancy. One weekly group session was led by physiotherapists, and home exercises were encouraged twice a week. Control women received regular antenatal care.\n\nMAIN OUTCOME MEASURES: Edinburgh Postnatal Depression Scale (EPDS) completed three months after birth. Scores of 10 or more and 13 or more suggested probable minor and major depression, respectively.\n\nRESULTS: Fourteen of 379 (3.7%) women in the intervention group and 17 of 340 (5.0%) in the control group had an EPDS score of ≥10 (p=0.46), and four of 379 (1.2%) women in the intervention group and eight of 340 (2.4%) in the control group had an EPDS score of ≥13 (p=0.25). Among women who did not exercise prior to pregnancy, two of 100 (2.0%) women in the intervention group and nine of 95 (9.5%) in the control group had an EPDS score of ≥10 (p=0.03).\n\nBiomedical Question:\nDoes exercise during pregnancy prevent postnatal depression?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"We did not find a lower prevalence of high EPDS scores among women randomized to regular exercise during pregnancy compared with the control group. However, a subgroup of women in the intervention group who did not exercise regularly prior to pregnancy had a reduced risk of postnatal depression.\",\n  \"evidence\": [\n    \"Fourteen of 379 (3.7%) women in the intervention group and 17 of 340 (5.0%) in the control group had an EPDS score of ≥10 (p=0.46), and four of 379 (1.2%) women in the intervention group and eight of 340 (2.4%) in the control group had an EPDS score of ≥13 (p=0.25). Among women who did not exercise prior to pregnancy, two of 100 (2.0%) women in the intervention group and nine of 95 (9.5%) in the control group had an EPDS score of ≥10 (p=0.03).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_17601244", "pmid": "17601244", "task": "evidence_qa", "question": "Are there associations of health status, disease activity and damage in SLE patients?", "context": "PATIENTS AND METHODS: A cross sectional study of 38 patients fulfilling the classification criteria for SLE. The patients visited a rheumatology outpatient clinic in Switzerland between January 2002 and December 2004. The last assessment during this period was used for the study. The assessment included, besides demographic data, the measurement of disease activity using the BILAG index, the measurement of disease damage using the SLICC/ACR damage index (SDI), as well as the patient's self assessed health status using the patient's questionnaire Medical Outcome Survey Short Form 36 (SF-36).\n\nRESULTS: A total of 36 women and 2 men were included in the study (median age: 43 yrs, median disease duration: 11 yrs). Increased disease activity (total BILAG) was shown to be significantly correlated with reduced physical function. A greater damage (total SDI) correlated significantly with reduced role function due to emotional limitations. Neither age nor disease duration showed any significant correlation with health status in this study.", "ground_truth": {"decision": "yes", "answer": "The present study, which is based on internationally accepted assessment tools for SLE patients, shows a significant relationship between increased disease activity and reduced physical function. This result emphasizes the importance of optimizing treatment aiming at reducing disease activity.", "evidence": ["A total of 36 women and 2 men were included in the study (median age: 43 yrs, median disease duration: 11 yrs). Increased disease activity (total BILAG) was shown to be significantly correlated with reduced physical function. A greater damage (total SDI) correlated significantly with reduced role function due to emotional limitations. Neither age nor disease duration showed any significant correlation with health status in this study."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPATIENTS AND METHODS: A cross sectional study of 38 patients fulfilling the classification criteria for SLE. The patients visited a rheumatology outpatient clinic in Switzerland between January 2002 and December 2004. The last assessment during this period was used for the study. The assessment included, besides demographic data, the measurement of disease activity using the BILAG index, the measurement of disease damage using the SLICC/ACR damage index (SDI), as well as the patient's self assessed health status using the patient's questionnaire Medical Outcome Survey Short Form 36 (SF-36).\n\nRESULTS: A total of 36 women and 2 men were included in the study (median age: 43 yrs, median disease duration: 11 yrs). Increased disease activity (total BILAG) was shown to be significantly correlated with reduced physical function. A greater damage (total SDI) correlated significantly with reduced role function due to emotional limitations. Neither age nor disease duration showed any significant correlation with health status in this study.\n\nBiomedical Question:\nAre there associations of health status, disease activity and damage in SLE patients?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"The present study, which is based on internationally accepted assessment tools for SLE patients, shows a significant relationship between increased disease activity and reduced physical function. This result emphasizes the importance of optimizing treatment aiming at reducing disease activity.\",\n  \"evidence\": [\n    \"A total of 36 women and 2 men were included in the study (median age: 43 yrs, median disease duration: 11 yrs). Increased disease activity (total BILAG) was shown to be significantly correlated with reduced physical function. A greater damage (total SDI) correlated significantly with reduced role function due to emotional limitations. Neither age nor disease duration showed any significant correlation with health status in this study.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_24074624", "pmid": "24074624", "task": "evidence_qa", "question": "Is intensive monitoring during the first transfusion in pediatric patients necessary?", "context": "BACKGROUND: Some pediatric patients, typically those that are very young or felt to be especially sick are temporarily admitted to the intensive care unit (ICU) for observation during their first transfusion. If a significant reaction that requires ICU management does not occur, these patients are then transferred to a regular ward where future blood products are administered. The aim of this project was to determine if heightened observation such as temporary ICU admissions for the first transfusion are warranted.\n\nMETHODS: From the blood bank records of a tertiary care pediatric hospital, a list of patients on whom a transfusion reaction was reported between 2007 and 2012, the type of reaction and the patient's transfusion history, were extracted. The hospital location where the transfusion occurred, and whether the patient was evaluated by the ICU team or transferred to the ICU for management of the reaction was determined from the patient's electronic medical record.\n\nRESULTS: There were 174 acute reactions in 150 patients. Of these 150 patients, 13 (8.7%) different patients experienced a reaction during their first transfusion; all 13 patients experienced clinically mild reactions (8 febrile non-hemolytic, 4 mild allergic, and 1 patient who simultaneously had a mild allergic and a febrile non-hemolytic), and none required ICU management. Six severe reactions (6 of 174, 3.4%) involving significant hypotension and/or hypoxia that required acute and intensive management occurred during subsequent (i.e. not the first) transfusion in six patients.", "ground_truth": {"decision": "no", "answer": "The practice of intensive observation for the first transfusion in pediatric patients is probably unnecessary.", "evidence": ["There were 174 acute reactions in 150 patients. Of these 150 patients, 13 (8.7%) different patients experienced a reaction during their first transfusion; all 13 patients experienced clinically mild reactions (8 febrile non-hemolytic, 4 mild allergic, and 1 patient who simultaneously had a mild allergic and a febrile non-hemolytic), and none required ICU management. Six severe reactions (6 of 174, 3.4%) involving significant hypotension and/or hypoxia that required acute and intensive management occurred during subsequent (i.e. not the first) transfusion in six patients."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Some pediatric patients, typically those that are very young or felt to be especially sick are temporarily admitted to the intensive care unit (ICU) for observation during their first transfusion. If a significant reaction that requires ICU management does not occur, these patients are then transferred to a regular ward where future blood products are administered. The aim of this project was to determine if heightened observation such as temporary ICU admissions for the first transfusion are warranted.\n\nMETHODS: From the blood bank records of a tertiary care pediatric hospital, a list of patients on whom a transfusion reaction was reported between 2007 and 2012, the type of reaction and the patient's transfusion history, were extracted. The hospital location where the transfusion occurred, and whether the patient was evaluated by the ICU team or transferred to the ICU for management of the reaction was determined from the patient's electronic medical record.\n\nRESULTS: There were 174 acute reactions in 150 patients. Of these 150 patients, 13 (8.7%) different patients experienced a reaction during their first transfusion; all 13 patients experienced clinically mild reactions (8 febrile non-hemolytic, 4 mild allergic, and 1 patient who simultaneously had a mild allergic and a febrile non-hemolytic), and none required ICU management. Six severe reactions (6 of 174, 3.4%) involving significant hypotension and/or hypoxia that required acute and intensive management occurred during subsequent (i.e. not the first) transfusion in six patients.\n\nBiomedical Question:\nIs intensive monitoring during the first transfusion in pediatric patients necessary?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"The practice of intensive observation for the first transfusion in pediatric patients is probably unnecessary.\",\n  \"evidence\": [\n    \"There were 174 acute reactions in 150 patients. Of these 150 patients, 13 (8.7%) different patients experienced a reaction during their first transfusion; all 13 patients experienced clinically mild reactions (8 febrile non-hemolytic, 4 mild allergic, and 1 patient who simultaneously had a mild allergic and a febrile non-hemolytic), and none required ICU management. Six severe reactions (6 of 174, 3.4%) involving significant hypotension and/or hypoxia that required acute and intensive management occurred during subsequent (i.e. not the first) transfusion in six patients.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_27136599", "pmid": "27136599", "task": "evidence_qa", "question": "Is it safe to perform rectal anastomosis in gynaecological debulking surgery without a diverting stoma?", "context": "METHOD: Patient data were retrospectively collected from a database for gynaecological cancer procedures carried out between January 2013 and July 2015. All patients who underwent a colorectal resection during cytoreduction were included in the study. The primary outcome was anastomotic leakage in the presence or absence of a diverting stoma. Secondary outcome parameters were complications and reoperations.\n\nRESULTS: In the period of study, 43 major colorectal procedures were performed on 37 women. The most common colorectal procedure was low rectal resection (n = 22; 59%) followed by anterior rectal resection (n = 7; 19%) and sigmoid resection (n = 4; 11%). Five (14%) patients underwent Hartmann's procedure. In three (8%) patients, a diverting loop ileostomy was created.", "ground_truth": {"decision": "yes", "answer": "Low rectal resection during debulking procedures for gynaecological cancers with peritoneal carcinomatosis can safely be performed by an experienced surgeon without a diverting stoma.", "evidence": ["In the period of study, 43 major colorectal procedures were performed on 37 women. The most common colorectal procedure was low rectal resection (n = 22; 59%) followed by anterior rectal resection (n = 7; 19%) and sigmoid resection (n = 4; 11%). Five (14%) patients underwent Hartmann's procedure. In three (8%) patients, a diverting loop ileostomy was created."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nMETHOD: Patient data were retrospectively collected from a database for gynaecological cancer procedures carried out between January 2013 and July 2015. All patients who underwent a colorectal resection during cytoreduction were included in the study. The primary outcome was anastomotic leakage in the presence or absence of a diverting stoma. Secondary outcome parameters were complications and reoperations.\n\nRESULTS: In the period of study, 43 major colorectal procedures were performed on 37 women. The most common colorectal procedure was low rectal resection (n = 22; 59%) followed by anterior rectal resection (n = 7; 19%) and sigmoid resection (n = 4; 11%). Five (14%) patients underwent Hartmann's procedure. In three (8%) patients, a diverting loop ileostomy was created.\n\nBiomedical Question:\nIs it safe to perform rectal anastomosis in gynaecological debulking surgery without a diverting stoma?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Low rectal resection during debulking procedures for gynaecological cancers with peritoneal carcinomatosis can safely be performed by an experienced surgeon without a diverting stoma.\",\n  \"evidence\": [\n    \"In the period of study, 43 major colorectal procedures were performed on 37 women. The most common colorectal procedure was low rectal resection (n = 22; 59%) followed by anterior rectal resection (n = 7; 19%) and sigmoid resection (n = 4; 11%). Five (14%) patients underwent Hartmann's procedure. In three (8%) patients, a diverting loop ileostomy was created.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_19615731", "pmid": "19615731", "task": "evidence_qa", "question": "Does higher body mass index contribute to worse asthma control in an urban population?", "context": "BACKGROUND: Epidemiologic findings support a positive association between asthma and obesity.\n\nOBJECTIVE: Determine whether obesity or increasing level of body mass index (BMI) are associated with worse asthma control in an ethnically diverse urban population.\n\nMETHODS: Cross-sectional assessment of asthma control was performed in patients with asthma recruited from primary care offices by using 4 different validated asthma control questionnaires: the Asthma Control and Communication Instrument (ACCI), the Asthma Control Test (ACT), the Asthma Control Questionnaire (ACQ), and the Asthma Therapy Assessment Questionnaire (ATAQ). Multiple linear regression analysis was performed to evaluate the association between obesity and increasing BMI level and asthma control.\n\nRESULTS: Of 292 subjects with a mean age of 47 years, the majority were women (82%) and African American (67%). There was a high prevalence of obesity with 63%, with only 15% normal weight. The mean score from all 4 questionnaires showed an average suboptimal asthma control (mean score/maximum possible score): ACCI (8.3/19), ACT (15.4/25), ACQ (2.1/6), and ATAQ (1.3/4). Regression analysis showed no association between obesity or increasing BMI level and asthma control using all 4 questionnaires. This finding persisted even after adjusting for FEV(1), smoking status, race, sex, selected comorbid illnesses, and long-term asthma controller use.", "ground_truth": {"decision": "no", "answer": "Using 4 validated asthma control questionnaires, we failed to find an association between obesity and asthma control in an urban population with asthma. Weight loss may not be an appropriate strategy to improve asthma control in this population.", "evidence": ["Of 292 subjects with a mean age of 47 years, the majority were women (82%) and African American (67%). There was a high prevalence of obesity with 63%, with only 15% normal weight. The mean score from all 4 questionnaires showed an average suboptimal asthma control (mean score/maximum possible score): ACCI (8.3/19), ACT (15.4/25), ACQ (2.1/6), and ATAQ (1.3/4). Regression analysis showed no association between obesity or increasing BMI level and asthma control using all 4 questionnaires. This finding persisted even after adjusting for FEV(1), smoking status, race, sex, selected comorbid illnesses, and long-term asthma controller use."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Epidemiologic findings support a positive association between asthma and obesity.\n\nOBJECTIVE: Determine whether obesity or increasing level of body mass index (BMI) are associated with worse asthma control in an ethnically diverse urban population.\n\nMETHODS: Cross-sectional assessment of asthma control was performed in patients with asthma recruited from primary care offices by using 4 different validated asthma control questionnaires: the Asthma Control and Communication Instrument (ACCI), the Asthma Control Test (ACT), the Asthma Control Questionnaire (ACQ), and the Asthma Therapy Assessment Questionnaire (ATAQ). Multiple linear regression analysis was performed to evaluate the association between obesity and increasing BMI level and asthma control.\n\nRESULTS: Of 292 subjects with a mean age of 47 years, the majority were women (82%) and African American (67%). There was a high prevalence of obesity with 63%, with only 15% normal weight. The mean score from all 4 questionnaires showed an average suboptimal asthma control (mean score/maximum possible score): ACCI (8.3/19), ACT (15.4/25), ACQ (2.1/6), and ATAQ (1.3/4). Regression analysis showed no association between obesity or increasing BMI level and asthma control using all 4 questionnaires. This finding persisted even after adjusting for FEV(1), smoking status, race, sex, selected comorbid illnesses, and long-term asthma controller use.\n\nBiomedical Question:\nDoes higher body mass index contribute to worse asthma control in an urban population?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"Using 4 validated asthma control questionnaires, we failed to find an association between obesity and asthma control in an urban population with asthma. Weight loss may not be an appropriate strategy to improve asthma control in this population.\",\n  \"evidence\": [\n    \"Of 292 subjects with a mean age of 47 years, the majority were women (82%) and African American (67%). There was a high prevalence of obesity with 63%, with only 15% normal weight. The mean score from all 4 questionnaires showed an average suboptimal asthma control (mean score/maximum possible score): ACCI (8.3/19), ACT (15.4/25), ACQ (2.1/6), and ATAQ (1.3/4). Regression analysis showed no association between obesity or increasing BMI level and asthma control using all 4 questionnaires. This finding persisted even after adjusting for FEV(1), smoking status, race, sex, selected comorbid illnesses, and long-term asthma controller use.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_10577397", "pmid": "10577397", "task": "evidence_qa", "question": "Is a pressor necessary during aortic perfusion and oxygenation therapy of cardiac arrest?", "context": "STUDY OBJECTIVE: Occlusion of the descending aorta and infusion of oxygenated ultrapurified polymerized bovine hemoglobin may improve the efficacy of advanced cardiac life support (ACLS). Because selective aortic perfusion and oxygenation (SAPO) directly increases coronary perfusion pressure, exogenous epinephrine may not be required. The purpose of this study was to determine whether exogenous epinephrine is necessary during SAPO by comparing the rate of return of spontaneous circulation and aortic and coronary perfusion pressures during ACLS-SAPO in animals treated with either intra-aortic epinephrine or saline solution.\n\nMETHODS: A prospective, randomized, interventional before-after trial with a canine model of ventricular fibrillation cardiac arrest and ACLS based on external chest compression was performed. The ECG, right atrial, aortic arch, and esophageal pulse pressures were measured continuously. A descending aortic occlusion balloon catheter was placed through the femoral artery. Ventricular fibrillation was induced, and no therapy was given during the 10-minute arrest time. Basic life support was then initiated and normalized by standardization of esophageal pulse pressure and central aortic blood gases. After 3 minutes of basic life support, the aortic occlusion balloon was inflated, and 0.01 mg/kg epinephrine or saline solution was administered through the aortic catheter followed by 450 mL of ultrapurified polymerized bovine hemoglobin over 2 minutes. Defibrillation was then attempted. The outcomes and changes in intravascular pressures were compared.\n\nRESULTS: Aortic pressures were higher during infusions in animals treated with epinephrine. During infusion, the mean aortic relaxation pressure increased by 58+/-5 mm Hg in animals that had received epinephrine versus 20+/-11 mm Hg in those that had received saline placebo. The coronary perfusion pressure during infusion increased by 52+/-8 mm Hg in animals that had received epinephrine versus 26+/-10 mm Hg in those that had received saline. Only 2 of 7 animals in the placebo group had return of spontaneous circulation versus 7 of 8 in the epinephrine group.", "ground_truth": {"decision": "yes", "answer": "The addition of epinephrine to ACLS-SAPO increases vital organ perfusion pressures and improves outcome from cardiac arrest. There appears to be a profound loss of arterial vasomotor tone after prolonged arrest. This loss of vasomotor tone may make exogenous pressors necessary for resuscitation after prolonged cardiac arrest.", "evidence": ["Aortic pressures were higher during infusions in animals treated with epinephrine. During infusion, the mean aortic relaxation pressure increased by 58+/-5 mm Hg in animals that had received epinephrine versus 20+/-11 mm Hg in those that had received saline placebo. The coronary perfusion pressure during infusion increased by 52+/-8 mm Hg in animals that had received epinephrine versus 26+/-10 mm Hg in those that had received saline. Only 2 of 7 animals in the placebo group had return of spontaneous circulation versus 7 of 8 in the epinephrine group."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nSTUDY OBJECTIVE: Occlusion of the descending aorta and infusion of oxygenated ultrapurified polymerized bovine hemoglobin may improve the efficacy of advanced cardiac life support (ACLS). Because selective aortic perfusion and oxygenation (SAPO) directly increases coronary perfusion pressure, exogenous epinephrine may not be required. The purpose of this study was to determine whether exogenous epinephrine is necessary during SAPO by comparing the rate of return of spontaneous circulation and aortic and coronary perfusion pressures during ACLS-SAPO in animals treated with either intra-aortic epinephrine or saline solution.\n\nMETHODS: A prospective, randomized, interventional before-after trial with a canine model of ventricular fibrillation cardiac arrest and ACLS based on external chest compression was performed. The ECG, right atrial, aortic arch, and esophageal pulse pressures were measured continuously. A descending aortic occlusion balloon catheter was placed through the femoral artery. Ventricular fibrillation was induced, and no therapy was given during the 10-minute arrest time. Basic life support was then initiated and normalized by standardization of esophageal pulse pressure and central aortic blood gases. After 3 minutes of basic life support, the aortic occlusion balloon was inflated, and 0.01 mg/kg epinephrine or saline solution was administered through the aortic catheter followed by 450 mL of ultrapurified polymerized bovine hemoglobin over 2 minutes. Defibrillation was then attempted. The outcomes and changes in intravascular pressures were compared.\n\nRESULTS: Aortic pressures were higher during infusions in animals treated with epinephrine. During infusion, the mean aortic relaxation pressure increased by 58+/-5 mm Hg in animals that had received epinephrine versus 20+/-11 mm Hg in those that had received saline placebo. The coronary perfusion pressure during infusion increased by 52+/-8 mm Hg in animals that had received epinephrine versus 26+/-10 mm Hg in those that had received saline. Only 2 of 7 animals in the placebo group had return of spontaneous circulation versus 7 of 8 in the epinephrine group.\n\nBiomedical Question:\nIs a pressor necessary during aortic perfusion and oxygenation therapy of cardiac arrest?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"The addition of epinephrine to ACLS-SAPO increases vital organ perfusion pressures and improves outcome from cardiac arrest. There appears to be a profound loss of arterial vasomotor tone after prolonged arrest. This loss of vasomotor tone may make exogenous pressors necessary for resuscitation after prolonged cardiac arrest.\",\n  \"evidence\": [\n    \"Aortic pressures were higher during infusions in animals treated with epinephrine. During infusion, the mean aortic relaxation pressure increased by 58+/-5 mm Hg in animals that had received epinephrine versus 20+/-11 mm Hg in those that had received saline placebo. The coronary perfusion pressure during infusion increased by 52+/-8 mm Hg in animals that had received epinephrine versus 26+/-10 mm Hg in those that had received saline. Only 2 of 7 animals in the placebo group had return of spontaneous circulation versus 7 of 8 in the epinephrine group.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_24336869", "pmid": "24336869", "task": "evidence_qa", "question": "Can routinely collected ambulance data about assaults contribute to reduction in community violence?", "context": "BACKGROUND: The 'law of spatiotemporal concentrations of events' introduced major preventative shifts in policing communities. 'Hotspots' are at the forefront of these developments yet somewhat understudied in emergency medicine. Furthermore, little is known about interagency 'data-crossover', despite some developments through the Cardiff Model. Can police-ED interagency data-sharing be used to reduce community-violence using a hotspots methodology?\n\nMETHODS: 12-month (2012) descriptive study and analysis of spatiotemporal clusters of police and emergency calls for service using hotspots methodology and assessing the degree of incident overlap. 3775 violent crime incidents and 775 assault incidents analysed using spatiotemporal clustering with k-means++ algorithm and Spearman's rho.\n\nRESULTS: Spatiotemporal location of calls for services to the police and the ambulance service are equally highly concentrated in a small number of geographical areas, primarily within intra-agency hotspots (33% and 53%, respectively) but across agencies' hotspots as well (25% and 15%, respectively). Datasets are statistically correlated with one another at the 0.57 and 0.34 levels, with 50% overlap when adjusted for the number of hotspots. At least one in every two police hotspots does not have an ambulance hotspot overlapping with it, suggesting half of assault spatiotemporal concentrations are unknown to the police. Data further suggest that more severely injured patients, as estimated by transfer to hospital, tend to be injured in the places with the highest number of police-recorded crimes.", "ground_truth": {"decision": "maybe", "answer": "A hotspots approach to sharing data circumvents the problem of disclosing person-identifiable data between different agencies. Practically, at least half of ambulance hotspots are unknown to the police; if causal, it suggests that data sharing leads to both reduced community violence by way of prevention (such as through anticipatory patrols or problem-oriented policing), particularly of more severe assaults, and improved efficiency of resource deployment.", "evidence": ["Spatiotemporal location of calls for services to the police and the ambulance service are equally highly concentrated in a small number of geographical areas, primarily within intra-agency hotspots (33% and 53%, respectively) but across agencies' hotspots as well (25% and 15%, respectively). Datasets are statistically correlated with one another at the 0.57 and 0.34 levels, with 50% overlap when adjusted for the number of hotspots. At least one in every two police hotspots does not have an ambulance hotspot overlapping with it, suggesting half of assault spatiotemporal concentrations are unknown to the police. Data further suggest that more severely injured patients, as estimated by transfer to hospital, tend to be injured in the places with the highest number of police-recorded crimes."], "uncertainty": "The study findings are preliminary, inconclusive, or report conflicting outcomes.", "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: The 'law of spatiotemporal concentrations of events' introduced major preventative shifts in policing communities. 'Hotspots' are at the forefront of these developments yet somewhat understudied in emergency medicine. Furthermore, little is known about interagency 'data-crossover', despite some developments through the Cardiff Model. Can police-ED interagency data-sharing be used to reduce community-violence using a hotspots methodology?\n\nMETHODS: 12-month (2012) descriptive study and analysis of spatiotemporal clusters of police and emergency calls for service using hotspots methodology and assessing the degree of incident overlap. 3775 violent crime incidents and 775 assault incidents analysed using spatiotemporal clustering with k-means++ algorithm and Spearman's rho.\n\nRESULTS: Spatiotemporal location of calls for services to the police and the ambulance service are equally highly concentrated in a small number of geographical areas, primarily within intra-agency hotspots (33% and 53%, respectively) but across agencies' hotspots as well (25% and 15%, respectively). Datasets are statistically correlated with one another at the 0.57 and 0.34 levels, with 50% overlap when adjusted for the number of hotspots. At least one in every two police hotspots does not have an ambulance hotspot overlapping with it, suggesting half of assault spatiotemporal concentrations are unknown to the police. Data further suggest that more severely injured patients, as estimated by transfer to hospital, tend to be injured in the places with the highest number of police-recorded crimes.\n\nBiomedical Question:\nCan routinely collected ambulance data about assaults contribute to reduction in community violence?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"maybe\",\n  \"answer\": \"A hotspots approach to sharing data circumvents the problem of disclosing person-identifiable data between different agencies. Practically, at least half of ambulance hotspots are unknown to the police; if causal, it suggests that data sharing leads to both reduced community violence by way of prevention (such as through anticipatory patrols or problem-oriented policing), particularly of more severe assaults, and improved efficiency of resource deployment.\",\n  \"evidence\": [\n    \"Spatiotemporal location of calls for services to the police and the ambulance service are equally highly concentrated in a small number of geographical areas, primarily within intra-agency hotspots (33% and 53%, respectively) but across agencies' hotspots as well (25% and 15%, respectively). Datasets are statistically correlated with one another at the 0.57 and 0.34 levels, with 50% overlap when adjusted for the number of hotspots. At least one in every two police hotspots does not have an ambulance hotspot overlapping with it, suggesting half of assault spatiotemporal concentrations are unknown to the police. Data further suggest that more severely injured patients, as estimated by transfer to hospital, tend to be injured in the places with the highest number of police-recorded crimes.\"\n  ],\n  \"uncertainty\": \"The study findings are preliminary, inconclusive, or report conflicting outcomes.\",\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_16046584", "pmid": "16046584", "task": "evidence_qa", "question": "Menopausal hormone therapy and irregular endometrial bleeding: a potential role for uterine natural killer cells?", "context": "CONTEXT: Irregular bleeding affects many users of combined menopausal hormone therapy (HT) and commonly leads to invasive and expensive investigations to exclude underlying malignancy. In most cases no abnormality is found.\n\nOBJECTIVE: The main objective of this study was to explore the role of uterine natural killer (uNK) cells and their regulatory cytokine IL-15 in irregular bleeding in HT users.\n\nDESIGN: This was a prospective observational study conducted between 2002 and 2004.\n\nSETTING: The study was conducted in a tertiary referral menopause clinic at King Edward Memorial Hospital, Western Australia.\n\nPATIENTS: Patients included 117 postmenopausal women taking combined HT.\n\nINTERVENTIONS: Outpatient endometrial biopsies were taken during and outside bleeding episodes.\n\nMAIN OUTCOME MEASURES: The relationship between endometrial uNK cells (CD56+) and bleeding patterns was measured. We also addressed the impact of HT exposure on uNK cell populations, the relationship between endometrial IL-15 expression and uNK cell populations, and killer Ig like receptor genotype in subjects with irregular bleeding.\n\nRESULTS: Endometrial CD56+ uNK cells were significantly increased in biopsies obtained during bleeding episodes (P<0.001), compared with HT users with no bleeding. The highest level of IL-15 expression was also seen in biopsies taken during bleeding. No clear relationship between killer Ig like receptor genotype and bleeding on HT was observed.", "ground_truth": {"decision": "yes", "answer": "Little is known about the mechanisms underlying irregular bleeding in HT users. This is the first report of uNK cells and their association with regulating cytokines in postmenopausal endometrium and demonstrates a possible mechanism by which HT may induce irregular bleeding.", "evidence": ["Endometrial CD56+ uNK cells were significantly increased in biopsies obtained during bleeding episodes (P<0.001), compared with HT users with no bleeding. The highest level of IL-15 expression was also seen in biopsies taken during bleeding. No clear relationship between killer Ig like receptor genotype and bleeding on HT was observed."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nCONTEXT: Irregular bleeding affects many users of combined menopausal hormone therapy (HT) and commonly leads to invasive and expensive investigations to exclude underlying malignancy. In most cases no abnormality is found.\n\nOBJECTIVE: The main objective of this study was to explore the role of uterine natural killer (uNK) cells and their regulatory cytokine IL-15 in irregular bleeding in HT users.\n\nDESIGN: This was a prospective observational study conducted between 2002 and 2004.\n\nSETTING: The study was conducted in a tertiary referral menopause clinic at King Edward Memorial Hospital, Western Australia.\n\nPATIENTS: Patients included 117 postmenopausal women taking combined HT.\n\nINTERVENTIONS: Outpatient endometrial biopsies were taken during and outside bleeding episodes.\n\nMAIN OUTCOME MEASURES: The relationship between endometrial uNK cells (CD56+) and bleeding patterns was measured. We also addressed the impact of HT exposure on uNK cell populations, the relationship between endometrial IL-15 expression and uNK cell populations, and killer Ig like receptor genotype in subjects with irregular bleeding.\n\nRESULTS: Endometrial CD56+ uNK cells were significantly increased in biopsies obtained during bleeding episodes (P<0.001), compared with HT users with no bleeding. The highest level of IL-15 expression was also seen in biopsies taken during bleeding. No clear relationship between killer Ig like receptor genotype and bleeding on HT was observed.\n\nBiomedical Question:\nMenopausal hormone therapy and irregular endometrial bleeding: a potential role for uterine natural killer cells?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Little is known about the mechanisms underlying irregular bleeding in HT users. This is the first report of uNK cells and their association with regulating cytokines in postmenopausal endometrium and demonstrates a possible mechanism by which HT may induce irregular bleeding.\",\n  \"evidence\": [\n    \"Endometrial CD56+ uNK cells were significantly increased in biopsies obtained during bleeding episodes (P<0.001), compared with HT users with no bleeding. The highest level of IL-15 expression was also seen in biopsies taken during bleeding. No clear relationship between killer Ig like receptor genotype and bleeding on HT was observed.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_20073599", "pmid": "20073599", "task": "evidence_qa", "question": "Do liquid-based preparations of urinary cytology perform differently than classically prepared cases?", "context": "CONTEXT: The cytomorphology of liquid-based preparations in urine cytology is different than classic slide preparations.\n\nOBJECTIVES: To compare the performance of liquid-based preparation specimens to classically prepared urine specimens with a malignant diagnosis in the College of American Pathologists Interlaboratory Comparison Program in Nongynecologic Cytology.\n\nDESIGN: Participant responses between 2000 and 2007 for urine specimens with a reference diagnosis of high-grade urothelial carcinoma/carcinoma in situ/dysplasia (HGUCA), squamous cell carcinoma, or adenocarcinoma were evaluated. ThinPrep and SurePath challenges were compared with classic preparations (smears, cytospins) for discordant responses.\n\nRESULTS: There were 18 288 pathologist, 11 957 cytotechnologist, and 8086 \"laboratory\" responses available. Classic preparations comprised 90% (n = 34 551) of urine challenges; 9% (n = 3295) were ThinPrep and 1% (n = 485) were SurePath. Concordance to the general category of \"positive-malignant\" was seen in 92% of classic preparations, 96.5% of ThinPrep, and 94.6% of SurePath challenges (P<.001). These results were statistically different for the exact reference interpretation of HGUCA (P<.001) but not for adenocarcinoma (P = .22). Cytotechnologists demonstrate statistically better performance for the general category of \"positive-malignant\" compared with pathologists for all urinary slide types and for the exact reference interpretation of HGUCA (94% versus 91.1%; P<.001) but not adenocarcinoma (96.3% versus 95.8%; P = .77) or squamous cell carcinoma (93.6% versus 87.7%; P = .07).", "ground_truth": {"decision": "yes", "answer": "Liquid-based preparations performed significantly better in urinary cytology challenges when evaluating malignant categories in the College of American Pathologists interlaboratory comparison program. The liquid-based preparation challenges also performed better for the exact reference interpretation of HGUCA, but no difference was observed for adenocarcinoma challenges. Cytotechnologists perform better than pathologists for all slide types, as well as those demonstrating HGUCA. These results suggest that liquid-based preparations facilitate a more accurate diagnosis than conventional preparations.", "evidence": ["There were 18 288 pathologist, 11 957 cytotechnologist, and 8086 \"laboratory\" responses available. Classic preparations comprised 90% (n = 34 551) of urine challenges; 9% (n = 3295) were ThinPrep and 1% (n = 485) were SurePath. Concordance to the general category of \"positive-malignant\" was seen in 92% of classic preparations, 96.5% of ThinPrep, and 94.6% of SurePath challenges (P<.001). These results were statistically different for the exact reference interpretation of HGUCA (P<.001) but not for adenocarcinoma (P = .22). Cytotechnologists demonstrate statistically better performance for the general category of \"positive-malignant\" compared with pathologists for all urinary slide types and for the exact reference interpretation of HGUCA (94% versus 91.1%; P<.001) but not adenocarcinoma (96.3% versus 95.8%; P = .77) or squamous cell carcinoma (93.6% versus 87.7%; P = .07)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nCONTEXT: The cytomorphology of liquid-based preparations in urine cytology is different than classic slide preparations.\n\nOBJECTIVES: To compare the performance of liquid-based preparation specimens to classically prepared urine specimens with a malignant diagnosis in the College of American Pathologists Interlaboratory Comparison Program in Nongynecologic Cytology.\n\nDESIGN: Participant responses between 2000 and 2007 for urine specimens with a reference diagnosis of high-grade urothelial carcinoma/carcinoma in situ/dysplasia (HGUCA), squamous cell carcinoma, or adenocarcinoma were evaluated. ThinPrep and SurePath challenges were compared with classic preparations (smears, cytospins) for discordant responses.\n\nRESULTS: There were 18 288 pathologist, 11 957 cytotechnologist, and 8086 \"laboratory\" responses available. Classic preparations comprised 90% (n = 34 551) of urine challenges; 9% (n = 3295) were ThinPrep and 1% (n = 485) were SurePath. Concordance to the general category of \"positive-malignant\" was seen in 92% of classic preparations, 96.5% of ThinPrep, and 94.6% of SurePath challenges (P<.001). These results were statistically different for the exact reference interpretation of HGUCA (P<.001) but not for adenocarcinoma (P = .22). Cytotechnologists demonstrate statistically better performance for the general category of \"positive-malignant\" compared with pathologists for all urinary slide types and for the exact reference interpretation of HGUCA (94% versus 91.1%; P<.001) but not adenocarcinoma (96.3% versus 95.8%; P = .77) or squamous cell carcinoma (93.6% versus 87.7%; P = .07).\n\nBiomedical Question:\nDo liquid-based preparations of urinary cytology perform differently than classically prepared cases?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Liquid-based preparations performed significantly better in urinary cytology challenges when evaluating malignant categories in the College of American Pathologists interlaboratory comparison program. The liquid-based preparation challenges also performed better for the exact reference interpretation of HGUCA, but no difference was observed for adenocarcinoma challenges. Cytotechnologists perform better than pathologists for all slide types, as well as those demonstrating HGUCA. These results suggest that liquid-based preparations facilitate a more accurate diagnosis than conventional preparations.\",\n  \"evidence\": [\n    \"There were 18 288 pathologist, 11 957 cytotechnologist, and 8086 \\\"laboratory\\\" responses available. Classic preparations comprised 90% (n = 34 551) of urine challenges; 9% (n = 3295) were ThinPrep and 1% (n = 485) were SurePath. Concordance to the general category of \\\"positive-malignant\\\" was seen in 92% of classic preparations, 96.5% of ThinPrep, and 94.6% of SurePath challenges (P<.001). These results were statistically different for the exact reference interpretation of HGUCA (P<.001) but not for adenocarcinoma (P = .22). Cytotechnologists demonstrate statistically better performance for the general category of \\\"positive-malignant\\\" compared with pathologists for all urinary slide types and for the exact reference interpretation of HGUCA (94% versus 91.1%; P<.001) but not adenocarcinoma (96.3% versus 95.8%; P = .77) or squamous cell carcinoma (93.6% versus 87.7%; P = .07).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_15954832", "pmid": "15954832", "task": "evidence_qa", "question": "Is minilaparoscopic inguinal hernia repair feasible?", "context": "INTRODUCTION: Laparoscopy has rapidly emerged as the preferred surgical approach to a number of different diseases because it allows for a correct diagnosis and proper treatment. It seems to be moving toward the use of mini-instruments (5 mm or less in diameter). The aim of this paper is to illustrate retrospectively the results of an initial experience of minilaparoscopic transabdominal preperitoneal (miniTAPP) repair of groin hernia defects performed at two institutions.\n\nMATERIALS AND METHODS: Between February 2000 and December 2003, a total of 303 patients (mean age, 45 years) underwent a miniTAPP procedure: 213 patients (70.2%) were operated on bilaterally and 90 (28.7%) for a unilateral defect, with a total of 516 hernia defects repaired. The primary endpoint was the feasibility rate for miniTAPP. The secondary endpoint was the incidence of mini-TAPP-related complications.\n\nRESULTS: No conversions to laparoscopy or an anterior open approach were required. There were no major complications, while minor complications ranged as high as 0.3%.", "ground_truth": {"decision": "yes", "answer": "While limited by its retrospective design, the present study indicates that the minilaparoscopic approach to groin hernia repair is safe and effective, making miniTAPP a challenging alternative to laparoscopy in the approach to groin hernia repair.", "evidence": ["No conversions to laparoscopy or an anterior open approach were required. There were no major complications, while minor complications ranged as high as 0.3%."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nINTRODUCTION: Laparoscopy has rapidly emerged as the preferred surgical approach to a number of different diseases because it allows for a correct diagnosis and proper treatment. It seems to be moving toward the use of mini-instruments (5 mm or less in diameter). The aim of this paper is to illustrate retrospectively the results of an initial experience of minilaparoscopic transabdominal preperitoneal (miniTAPP) repair of groin hernia defects performed at two institutions.\n\nMATERIALS AND METHODS: Between February 2000 and December 2003, a total of 303 patients (mean age, 45 years) underwent a miniTAPP procedure: 213 patients (70.2%) were operated on bilaterally and 90 (28.7%) for a unilateral defect, with a total of 516 hernia defects repaired. The primary endpoint was the feasibility rate for miniTAPP. The secondary endpoint was the incidence of mini-TAPP-related complications.\n\nRESULTS: No conversions to laparoscopy or an anterior open approach were required. There were no major complications, while minor complications ranged as high as 0.3%.\n\nBiomedical Question:\nIs minilaparoscopic inguinal hernia repair feasible?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"While limited by its retrospective design, the present study indicates that the minilaparoscopic approach to groin hernia repair is safe and effective, making miniTAPP a challenging alternative to laparoscopy in the approach to groin hernia repair.\",\n  \"evidence\": [\n    \"No conversions to laparoscopy or an anterior open approach were required. There were no major complications, while minor complications ranged as high as 0.3%.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_19398929", "pmid": "19398929", "task": "evidence_qa", "question": "Can the growth rate of a gallbladder polyp predict a neoplastic polyp?", "context": "BACKGROUND: Cholecystectomy for GB polyps that are larger than 10 mm is generally recommended because of the high probability of neoplasm. In contrast, a follow-up strategy is preferred for GB polyps smaller than 10 mm. However, there are no treatment guidelines for polyps that grow in size during the follow-up period.STUDY: We retrospectively investigated 145 patients with GB polyps who underwent at least 1 ultrasonographic follow-up examination over an interval greater than 6 months, before cholecystectomy at Samsung medical center, South Korea, from 1994 to 2007. The growth rate was determined based on the change in size per time interval between 2 ultrasonographic examinations (mm/mo).\n\nRESULTS: The median age of the patients was 48 years (range: 25 to 75). One hundred twenty-five non-neoplastic polyps and 20 neoplastic polyps were found. Neoplastic polyps were more frequently found in patients older than 60 years, those with hypertension, a polyp size greater than 10 mm, and a rapid growth rate greater than 0.6 mm/mo. On multivariate analysis, however, the growth rate was not related to the neoplastic nature of a polyp, but older age (>60 y) and large size (>10 mm) were significantly associated with neoplastic polyps.", "ground_truth": {"decision": "no", "answer": "Patient's age (>60 y) and large polyp size (>10 mm) were significant predictive factors for neoplastic GB polyps. GB polyps less than 10 mm in diameter do not require surgical intervention simply because they grow.", "evidence": ["The median age of the patients was 48 years (range: 25 to 75). One hundred twenty-five non-neoplastic polyps and 20 neoplastic polyps were found. Neoplastic polyps were more frequently found in patients older than 60 years, those with hypertension, a polyp size greater than 10 mm, and a rapid growth rate greater than 0.6 mm/mo. On multivariate analysis, however, the growth rate was not related to the neoplastic nature of a polyp, but older age (>60 y) and large size (>10 mm) were significantly associated with neoplastic polyps."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nBACKGROUND: Cholecystectomy for GB polyps that are larger than 10 mm is generally recommended because of the high probability of neoplasm. In contrast, a follow-up strategy is preferred for GB polyps smaller than 10 mm. However, there are no treatment guidelines for polyps that grow in size during the follow-up period.STUDY: We retrospectively investigated 145 patients with GB polyps who underwent at least 1 ultrasonographic follow-up examination over an interval greater than 6 months, before cholecystectomy at Samsung medical center, South Korea, from 1994 to 2007. The growth rate was determined based on the change in size per time interval between 2 ultrasonographic examinations (mm/mo).\n\nRESULTS: The median age of the patients was 48 years (range: 25 to 75). One hundred twenty-five non-neoplastic polyps and 20 neoplastic polyps were found. Neoplastic polyps were more frequently found in patients older than 60 years, those with hypertension, a polyp size greater than 10 mm, and a rapid growth rate greater than 0.6 mm/mo. On multivariate analysis, however, the growth rate was not related to the neoplastic nature of a polyp, but older age (>60 y) and large size (>10 mm) were significantly associated with neoplastic polyps.\n\nBiomedical Question:\nCan the growth rate of a gallbladder polyp predict a neoplastic polyp?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"no\",\n  \"answer\": \"Patient's age (>60 y) and large polyp size (>10 mm) were significant predictive factors for neoplastic GB polyps. GB polyps less than 10 mm in diameter do not require surgical intervention simply because they grow.\",\n  \"evidence\": [\n    \"The median age of the patients was 48 years (range: 25 to 75). One hundred twenty-five non-neoplastic polyps and 20 neoplastic polyps were found. Neoplastic polyps were more frequently found in patients older than 60 years, those with hypertension, a polyp size greater than 10 mm, and a rapid growth rate greater than 0.6 mm/mo. On multivariate analysis, however, the growth rate was not related to the neoplastic nature of a polyp, but older age (>60 y) and large size (>10 mm) were significantly associated with neoplastic polyps.\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}
{"id": "bioev_pubmedqa_17244100", "pmid": "17244100", "task": "evidence_qa", "question": "Can patient coaching reduce racial/ethnic disparities in cancer pain control?", "context": "PURPOSE: Minority patients with cancer experience worse control of their pain than do their white counterparts. This disparity may, in part, reflect more miscommunication between minority patients and their physicians. Therefore, we examined whether patient coaching could reduce disparities in pain control in a secondary analysis of a randomized controlled trial.\n\nMETHODS: Sixty-seven English-speaking adult cancer outpatients, including 15 minorities, with moderate pain over the prior 2 weeks were randomly assigned to the experimental (N = 34) or control group (N = 33). Experimental patients received a 20-minute individualized education and coaching session to increase knowledge of pain self-management, to redress personal misconceptions about pain treatment, and to rehearse an individually scripted patient-physician dialog about pain control. The control group received standardized information on controlling pain. Data on average pain (0-10 scale) were collected at enrollment and 2-week follow-up.\n\nRESULTS: At enrollment, minority patients had significantly more pain than their white counterparts (6.0 vs 5.0, P = 0.05). At follow-up, minorities in the control group continued to have more pain (6.4 vs 4.7, P = 0.01), whereas in the experimental group, disparities were eliminated (4.0 vs 4.3, P = 0.71). The effect of the intervention on reducing disparities was significant (P = 0.04).", "ground_truth": {"decision": "yes", "answer": "Patient coaching offers promise as a means of reducing racial/ethnic disparities in pain control. Larger studies are needed to validate these findings and to explore possible mechanisms.", "evidence": ["At enrollment, minority patients had significantly more pain than their white counterparts (6.0 vs 5.0, P = 0.05). At follow-up, minorities in the control group continued to have more pain (6.4 vs 4.7, P = 0.01), whereas in the experimental group, disparities were eliminated (4.0 vs 4.3, P = 0.71). The effect of the intervention on reducing disparities was significant (P = 0.04)."], "uncertainty": null, "limitations": []}, "messages": [{"role": "system", "content": "You are BioEvidence-LLM, an expert biomedical literature analysis assistant.\nYour role is to analyze biomedical questions and provided source evidence strictly and accurately.\n\nCRITICAL OPERATIONAL RULES:\n1. EVIDENCE BEFORE GENERATION: Base all claims solely on the provided evidence text. Never invent facts, biological mechanisms, sample sizes, or p-values.\n2. PRESERVE UNCERTAINTY: If the source study is preliminary, inconclusive, or has mixed findings, classify as \"maybe\" and document the nuance under \"uncertainty\".\n3. PRESERVE EXACT NUMERICAL VALUES: Retain exact statistical numbers, odds ratios, dosages, and confidence intervals verbatim.\n4. STRUCTURED OUTPUT: Always reply strictly with a valid JSON object matching this schema:\n{\n  \"decision\": \"yes\" | \"no\" | \"maybe\",\n  \"answer\": \"Concise, evidence-grounded synthesis answering the question.\",\n  \"evidence\": [\"Verbatim sentence or phrase from source text supporting the answer.\"],\n  \"uncertainty\": \"Explicit study caveats, ambiguous results, or limited generalizability (or null if none).\",\n  \"limitations\": [\"Author-reported study limitations, e.g. sample size, retrospective design.\"]\n}\nDo not include any conversational filler, markdown backticks around the JSON, or text outside the JSON object."}, {"role": "user", "content": "Task: evidence_qa\n\nEvidence Context:\nPURPOSE: Minority patients with cancer experience worse control of their pain than do their white counterparts. This disparity may, in part, reflect more miscommunication between minority patients and their physicians. Therefore, we examined whether patient coaching could reduce disparities in pain control in a secondary analysis of a randomized controlled trial.\n\nMETHODS: Sixty-seven English-speaking adult cancer outpatients, including 15 minorities, with moderate pain over the prior 2 weeks were randomly assigned to the experimental (N = 34) or control group (N = 33). Experimental patients received a 20-minute individualized education and coaching session to increase knowledge of pain self-management, to redress personal misconceptions about pain treatment, and to rehearse an individually scripted patient-physician dialog about pain control. The control group received standardized information on controlling pain. Data on average pain (0-10 scale) were collected at enrollment and 2-week follow-up.\n\nRESULTS: At enrollment, minority patients had significantly more pain than their white counterparts (6.0 vs 5.0, P = 0.05). At follow-up, minorities in the control group continued to have more pain (6.4 vs 4.7, P = 0.01), whereas in the experimental group, disparities were eliminated (4.0 vs 4.3, P = 0.71). The effect of the intervention on reducing disparities was significant (P = 0.04).\n\nBiomedical Question:\nCan patient coaching reduce racial/ethnic disparities in cancer pain control?\n\nAnalyze the evidence and answer the question in the required JSON format."}, {"role": "assistant", "content": "{\n  \"decision\": \"yes\",\n  \"answer\": \"Patient coaching offers promise as a means of reducing racial/ethnic disparities in pain control. Larger studies are needed to validate these findings and to explore possible mechanisms.\",\n  \"evidence\": [\n    \"At enrollment, minority patients had significantly more pain than their white counterparts (6.0 vs 5.0, P = 0.05). At follow-up, minorities in the control group continued to have more pain (6.4 vs 4.7, P = 0.01), whereas in the experimental group, disparities were eliminated (4.0 vs 4.3, P = 0.71). The effect of the intervention on reducing disparities was significant (P = 0.04).\"\n  ],\n  \"uncertainty\": null,\n  \"limitations\": []\n}"}]}