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Occupational Injuries and Illnesses - Characteristics Data (ca)
ca.txt
Section Listing
1. Survey Definition
2. FTP files listed in the survey directory
3. Time series, series file, data file, & mapping file definitions and
relationships
4. Series file format and field definitions
5. Data file format and field definitions
6. Mapping file formats and field definitions
7. Data Element Dictionary
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Section 1
========================================================================
The following is a definition of: Biennial Nonfatal Occupational Injuries and Illnesses -
characteristics data (ca)
Survey Description: In addition to industry data on injuries and illnesses,
survey respondents also are asked to provide additional information for a
subset of cases that resulted in a day away from work, job transfer, or
restriction. Employers answer several questions about these cases, including
the worker demographics and occupation as well as the case circumstances
surrounding the injury or illness case. Beginning with the 2021-2022 reference
period and continuing with 2023-2024 forward, this dataset expanded from including
only days away from work cases, to also including cases that resulted in a day of job
transfer restriction, as well as the combination of the two. This dataset moved to a
2-year reference period and will be released biennially (every other year).
Summary of Data Available: Detailed breakouts of injury and illness data by
a variety of characteristics, including age, category, event, sex,
industry, length of service, nature, occupation, part of body, race, and
source are available.
Frequency of Observations: Biennial data are available and released every other
year. The reference period in the files is the second year of the two-year period.
For example: For the biennial reference period 2023-2024, the time series data
indicates reference year 2024.
Data Characteristics: Data are reported to one decimal place for rates, rounded
to the nearest 10 for counts, and whole number for median days.
Updating Schedule: OSHS nonfatal injury and illness data characteristics data are
published biennially and include a reference period of 2 years. For example,
2023-2024 includes cases from both years.
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Section 2
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The following Biennial Nonfatal Occupational Injuries and Illnesses - characteristics data
files are on the BLS internet in the sub-directory pub/time.series/ca:
ca.age - Age codes (mapping file)
ca.case - Case codes (mapping file)
ca.category - Category codes (mapping file)
ca.contacts - Contacts for ca survey
ca.data.0.Current - All current biennial year-to-date data
ca.data.1.AllData - All data
ca.datatype - Datatype codes (mapping file)
ca.event - Event codes (mapping file)
ca.footnote - Footnote codes (mapping file)
ca.sex - Sex codes (mapping file)
ca.hour - Hour codes (mapping file)
ca.industry - Industry codes (mapping file)
ca.los - Length of service (LOS) codes (mapping file)
ca.nature - Nature codes (mapping file)
ca.occupation - Occupation codes (mapping file)
ca.ownership - Ownership codes (mapping file)
ca.pob - Part of body (POB) codes (mapping file)
ca.race - Race codes (mapping file)
ca.series - All series with beginning and end dates
ca.source - Source codes (mapping file)
ca.special - Special codes (mapping file)
ca.state - State codes (mapping file)
ca.time - Time codes (mapping file)
ca.txt - General information
ca.weekday - Weekday codes (mapping file)
ca.medical - Codes to indicate medical treatment type (mapping file)
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Section 3
============================================================================
The definition of a time series, its relationship to and the
interrelationship among series, data and mapping files is detailed below:
A time series refers to a set of data observed over an extended period of
time over consistent time intervals (i.e. monthly, quarterly, semi-annually,
annually). BLS time series data are typically produced at monthly intervals
and represent data ranging from a specific consumer item in a specific
geographic area whose price is gathered monthly to a category of worker in
a specific industry whose employment rate is being recorded monthly, etc.
In the case of the ca series, it is produced biennially (every other year)
and covers a two-year reference period (i.e. 2023-2024). The reference period
listed in the time series file will be the second year of the biennial reference
period. For example, for reference period 2023-2024, the time series file will
show annual 2024, reference period 2023-2024 will show annual 2024, etc.
The FTP files are organized such that data users are provided with the
following set of files to use in their efforts to interpret data files:
a) a series file (only one series file per survey)
b) mapping files
c) data files
The series file contains a set of codes which, together, compose a series
identification code that serves to uniquely identify a single time series.
Additionally, the series file also contains the following series-level
information:
a) the period and year corresponding to the first data observation
(in the case of ca, that is the biennial end year)
b) the period and year corresponding to the most recent data observation
(in the case of ca, that is the biennial end year)
The mapping files are definition files that contain explanatory text
descriptions that correspond to each of the various codes contained within
each series identification code.
The data file contains one line of data for each observation period
pertaining to a specific time series. Each line contains a reference to
the following:
a) series identification code
b) year in which data is observed (in the case of ca, that is the biennial end year)
c) period for which data is observed (M13, Q05, and S03 indicate annual
averages)
d) value
e) footnote code (if available)
============================================================================
Section 4
============================================================================
File Structure and Format: The following represents the file format used
to define ca.series. Note the Field Numbers are for reference only; they
do not exist in the database. Data files are in ASCII text format. Data
elements are separated by spaces; the first record of each file contains
the column headers for the data elements stored in each field. Each record
ends with a new line character.
Field #/Data Element Length Value(Example)
1. series_id 17 CAU00X11XXXX3E100
2. category_code 3 00X
3. datatype_code 1 3
4. case_code 1 E
5. age_code 6 00XXXX
6. los_code 6 0XXXXX
7. medical_code 6 CNYXXX
8. race_code 6 0XXXXX
9. sex_code 6 0XXXXX
10. pob_code 6 0XXXXX
11. event_code 6 0000XX
12. source_code 6 0000XX
13. occupation_code 6 000000
14. nature_code 6 0000XX
15. industry_code 6 000000
16. time_code 6 000000
17. hour_code 6 000000
18. weekday_code 6 000000
19. special_code 6 000000
20. ownership_code 1 1
21. state_code 2 00
22. footnote_codes 10 Varies
22. begin_year 4 2024
23. begin_period 3 A01
24. end_year 4 2024
25. end_period 3 A01
Note that for the ca series, the begin_year and end_year fields represent
the second year of the biennial period. For example, if 2024 is displayed
for the begin_year or end_year, then that represents the 2023-2024 period.
If 2024 is displayed, it represents the 2023-2024 period, etc. Additionally,
the begin_period and end_period are represented as A01 , but data are
published biennially and represent two years of data.
The series_id (CAU00X11XXXX3E100) can be broken out into:
Code = Value
survey abbreviation = CA
seasonal adjustment code = U
category code = 00X
detail code = 11XXXX
datatype code = 3
case code = E
ownership code = 1
state code = 00
============================================================================
Section 5
============================================================================
File Structure and Format: The following represents the file format used
to define each data file. Note that the field numbers are for reference
only; they do not exist in the database. Data files are in ASCII text
format. Data elements are separated by spaces; the first record of each
file contains the column headers for the data elements stored in each field.
Each record ends with a new line character.
The ca.data file may be partitioned into two separate files:
1. ca.data.0.Current = All current biennial year-to-date data
2. ca.data.1.AllData = All data
Both of the above data files have the following format:
Field #/Data Element Length Value (Example)
1. series_id 17 CAU00X11XXXX3E100
2. year 4 2024
3. period 3 A01
4. value 12 3.7
5. footnote_codes 10 Varies
The series_id (CAU00X11XXXX3E100) can be broken out into:
Code = Value
survey abbreviation = CA
seasonal adjustment code = U
category code = 00X
detail code = 11XXXX
datatype code = 3
case code = E
ownership code = 1
state code = 00
============================================================================
Section 6
============================================================================
File Structure and Format: The following represents the file format used
to define each mapping file. Note that the field numbers are for reference
only; they do not exist in the database. Mapping files are in ASCII text
format. Data elements are separated by tabs; the first record of each file
contains the column headers for the data elements stored in each field.
Each record ends with a new line character.
File Name: ca.age
Field #/Data Element Length Value(Example)
1. age_code 6 000000
2. age_text 100 Text
File Name: ca.case
Field #/Data Element Length Value(Example)
1. case_code 1 E
2. case_text 100 Text
File Name: ca.category
Field #/Data Element Length Value(Example)
1. case_code 1 3
2. category_code 3 00X
3. category_text 100 Text
File Name: ca.datatype
Field #/Data Element Length Value(Example)
1. datatype_code 1 3
2. datatype_text 100 Text
File Name: ca.event
Field #/Data Element Length Value(Example)
1. event_code 6 0XXXXX
2. event_text 100 Text
File Name: ca.footnote
Field #/Data Element Length Value(Example)
1. footnote_code 1 P
2. footnote_text 100 Text
File Name: ca.sex
Field #/Data Element Length Value(Example)
1. sex_code 6 000000
2. sex_text 100 Text
File Name: ca.hour
Field #/Data Element Length Value(Example)
1. hour_code 6 000000
2. hour_text 100 Text
File Name: ca.industry
Field #/Data Element Length Value(Example)
1. industry_code 6 000000
2. industry_text 100 Text
File Name: ca.los
Field #/Data Element Length Value(Example)
1. los_code 6 000000
2. los_text 100 Text
File Name: ca.medical
Field #/Data Element Length Value(Example)
1. medical_code 6 CNYXXX
2. medical_text 100 Text
File Name: ca.nature
Field #/Data Element Length Value(Example)
1. nature_code 6 0XXXXX
2. nature_text 100 Text
File Name: ca.occupation
Field #/Data Element Length Value(Example)
1. occupation_code 6 000000
2. occupation_text 100 Text
File Name: ca.ownership
Field #/Data Element Length Value(Example)
1. ownership_code 1 1
2. ownership_text 100 Text
File Name: ca.pob
Field #/Data Element Length Value(Example)
1. pob_code 6 0XXXXX
2. pob_text 100 Text
File Name: ca.race
Field #/Data Element Length Value(Example)
1. race_code 6 000000
2. race_text 100 Text
File Name: ca.source
Field #/Data Element Length Value(Example)
1. source_code 6 0XXXXX
2. source_text 100 Text
File Name: ca.special
Field #/Data Element Length Value(Example)
1. special_code 6 000000
2. special_text 100 Text
File Name: ca.state
Field #/Data Element Length Value(Example)
1. state_code 2 00
2. state_name 100 Text
File Name: ca.time
Field #/Data Element Length Value(Example)
1. time_code 6 000000
2. time_text 100 Text
File Name: ca.weekday
Field #/Data Element Length Value(Example)
1. weekday_code 6 000000
2. weekday_text 100 Text
============================================================================
Section 7
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BIENNIAL NONFATAL OCCUPATIONAL INJURIES AND ILLNESSES--CHARACTERISTICS DATA (ca)
DATABASE ELEMENTS
Data Element Length Value(Example) Description
age_code 6 000000 Code identifying age of
subjects for which data
are observed.
age_text 100 Text Identifies age of subjects
Ex: 20-24 for which data are
observed.
begin_period 3 A01 Identifies first data
Ex: A01=2024 observation within the
first year for which data
are available for a given
time series.
begin_year 4 2024 Identifies first year for
which data are available
for a given time series. In
the case of ca, the begin_year
will represent the second year
of the two-year reference period.
For example begin_year=2024
represents 2023-2024 data.
case_code 1 A Code identifying type of
Ex: A=Industry case for which data are
division or available for a given time
selected
characteristics
by age.
case_text 100 Text Describes case.
category_code 3 00X Code identifying industry,
event, or characteristic
for which data are
available for a given time
series.
category_text 100 Text Names the industry, event,
Ex: MIN=Mining, or characteristic for
N1A=Fractures which data are available
for a given time series.
datatype_code 1 3 Code identifying the
datatype of the
observation.
datatype_text 100 Text Identifies the datatype for
any given time series.
end_period 3 A01 Identifies last data
observation within the
last year for which data
are available for a given
time series.
end_year 4 2024 Identifies last year for
which data are available
for a given time series. In
the case of ca, the end_year
will represent the second year
of the two-year reference period.
For example end_year=2024 represents
2023-2024 data.
event_code 6 0XXXXX Code identifying the event
which resulted in the
reported injury or
illness.
event_text 100 Text Names the event which
Ex: Falls, slips, resulted in the reported
trips injury or illness.
footnote_code 10 It varies Identifies footnote for
the data series.
sex_code 6 000000 Code identifying sex of
person experiencing the
injury or illness.
sex_text 100 Text Names sex of person
Ex: Men experiencing the injury or
illness.
hour_code 6 000000 Code identifying the total
hours worked before injury
or illness.
hour_text 100 Text Number of hours worked before
Ex. 1 - 2 hours injury or illness occurred.
industry_code 6 000000 Code identifying the
industry for which data
are observed.
industry_text 100 Text Names the industry for
Ex: Construction which data are observed.
los_code 6 000000 Code identifying the
length of service of the
person experiencing the
injury or illness.
los_text 100 Text Names the length of
Ex: 1-5 years service of the person
experiencing the injury or
illness.
medical_code 6 CHYXXX Code identifying the
type of medical treatment
for the injury or illness,
if applicable.
medical_text 100 Text Names the medical treatment
Ex: Any type of the injury or illness,
emergency room if applicable.
or
hospitalization
- Yes
nature_code 6 0XXXXX Code identifying the
nature of the injury or
illness.
nature_text 100 Text Names the nature of the
Ex: Fractures injury or illness.
occupation_code 6 000000 Code identifying the
occupation of the person
experiencing the injury or
illness.
occupation_text 100 Text Names the occupation of
Ex: Roofers the person experiencing
the injury or illness.
ownership_code 1 1 Code identifying the
ownership type.
ownership_name 100 Text Names the type of ownership
Ex. Detailed of employer.
Private Industry
period 3 A01 Identifies period for which data
Ex: A01=2024 is observed. For ca, the A01 period
represents the second year in the
biennial reference period. For
example, A01=2024 represents 2023-2024 data.
pob_code 6 0XXXXX Code identifying the part
of body affected.
pob_text 100 Text Names the part of body
Ex: Knee(s) affected.
race_code 6 000000 Code identifying the race
of the person experiencing
the injury or illness.
race_text 100 Text Names the race of the
Ex:Asian person experiencing the
injury or illness.
series_id 17 CAU00X11XXXX3E100 Unique series identifier
source_code 6 0XXXXX Code identifying the
source of the injury or
illness.
source_text 100 Text Names the source of the
Ex: Corrosive injury or illness.
acids
special_code 6 000000 Code identifying specific
injury or illness.
special_text 100 Text Name of specific injury or
Ex. illness.
Musculoskeletal
disorders
state_code 2 00 Code identifying each state.
state_name 100 Text Names of specific state where
Ex. Arizona injury or illness occurred.
time_code 6 000000 Code identifying the time
of the day injury or illness
occurred.
time_text 100 Text Time of the day when injury or
Ex. 12:01AM-4:00AM illness occurred.
value 12 3.7 Observation for the series.
weekday_code 6 000000 Code identifying the day of
the week the injury or illness
occurred.
weekday_text 100 Text Day of the week the injury or
Ex. Sunday illness occurred.
year 4 2024 Identifies the second year of the
biennial period of observation.