| --- |
| task_categories: |
| - tabular-classification |
| language: |
| - en |
| tags: |
| - health |
| - medical |
| size_categories: |
| - 1K<n<10K |
| --- |
| # ❤️ Heart Disease — Exploratory Data Analysis |
|
|
| ## 👤 Author |
| **Oded Fuchs** |
|
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| --- |
|
|
| ## 🎯 Project Goal |
| The goal of this project is to explore which factors are most strongly related to heart disease, |
| using statistical analysis and data visualization. |
|
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| --- |
|
|
| ## 🔍 Research Question |
| > **Which factors have the strongest impact on the likelihood of heart disease?** |
|
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| --- |
|
|
| ## 📦 Dataset |
| - Source: Kaggle |
| - Format: CSV |
| - ~302 samples |
| - Contains various clinical features |
|
|
| ### Target |
| `target` |
| - **1 = Heart disease** |
| - **0 = No heart disease** |
|
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| --- |
|
|
| ## 🏷 Feature Overview |
| | Feature | Description | |
| |---------|-------------| |
| | age | Age | |
| | sex | 0 = female, 1 = male | |
| | cp | Chest pain type | |
| | trestbps | Resting blood pressure | |
| | chol | Cholesterol | |
| | fbs | Fasting blood sugar | |
| | restecg | Resting ECG results | |
| | thalach | Maximum heart rate | |
| | exang | Exercise-induced angina | |
| | oldpeak | ST depression | |
| | slope | Slope of ST | |
| | ca | Number of major vessels | |
| | thal | Thallium test result | |
| | target | Heart disease indicator | |
|
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| --- |
|
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| # 🔧 Data Preparation |
|
|
| ### ✅ Cleaning Steps |
| - Checked for missing values — none found |
| - Checked for duplicate records |
| - Verified valid ranges |
| - Adjusted and simplified column names |
|
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| --- |
|
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| # 📊 Exploratory Data Analysis (EDA) |
|
|
| ## Target Distribution |
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|  |
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| --- |
|
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| ## ✅ Key Features & Insights |
|
|
| ### 1) Age |
| Patients with heart disease are slightly younger on average. |
|
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|  |
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| --- |
|
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| ### 2) Chest Pain (cp) |
| One of the strongest predictors: |
| Higher chest pain type is strongly linked to heart disease. |
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|  |
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| --- |
|
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| ### 3) Max Heart Rate (thalach) |
| Patients with heart disease tend to have a higher maximum heart rate. |
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|  |
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| --- |
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| ### 4) ST Depression (oldpeak) |
| Lower oldpeak values are more common among heart-disease patients. |
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|  |
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| --- |
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| ### 5) Exercise-Induced Angina (exang) |
| Most patients **do not** experience chest pain during exercise. |
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|  |
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| --- |
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| ### 6) Thal |
| Moderate difference between groups, still noticeable. |
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|  |
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| --- |
|
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| # 📑 Summary Table |
|
|
| | Feature | No Disease (0) | Disease (1) | Insight | |
| |---------|----------------|-------------|---------| |
| | cp | 0.48 | 1.38 | Strong relationship | |
| | thalach | 139 | 159 | Higher among disease | |
| | oldpeak | 1.60 | 0.57 | Lower among disease | |
| | exang | 0.55 | 0.14 | Less common in disease | |
| | age | 56.6 | 52.4 | Slightly younger | |
| | chol | 251 | 241 | Small difference | |
| | ca | 1.16 | 0.37 | ⚠️ Opposite trend | |
| | trestbps | 134 | 129 | Weak effect | |
| | thal | 2.54 | 2.12 | Moderate effect | |
|
|
| --- |
|
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| # ✅ Main Insights |
|
|
| 📌 Strong indicators of heart disease: |
| 1) **Chest Pain (cp)** |
| 2) **Max Heart Rate (thalach)** |
| 3) **ST Depression (oldpeak)** |
| 4) **Exercise-Induced Angina (exang)** |
|
|
| 📌 Additional observations: |
| - Exercise-induced angina (exang) is less common among patients with heart disease |
| - Cholesterol and blood pressure show weaker relationships |
| - `ca` shows an unexpected pattern → may indicate data/coding issues |
|
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| --- |
|
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| # ✅ Conclusions |
| Several clinical measurements appear strongly connected to heart disease, including chest pain type, maximum heart rate, and ST-related metrics. |
| Other features, such as cholesterol and resting blood pressure, show weaker influence. |
|
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| --- |
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| # 🎬 Video Presentation |
| > 🔗 https://www.loom.com/share/d5891c3d0c20490ba79884fc701f4bc7 |
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| --- |
| |
| # 🧾 Files Included |
| | File | Description | |
| |------|-------------| |
| | Assignment_1_oded_fuchs.ipynb | Analysis & visuals | |
| | README.md | Project summary | |
| | heart.csv | Original dataset | |
| |
| --- |
| |
