Codes
BPWHEN is a 4-digit numeric variable with no implied decimals.
0: Not in universe
9999: Unknown
Description
For sample persons aged 18 and older who worked last year at a civilian job and who had back pain every day for at least 1 week last year, BPWHEN reports the year when the person first had an episode of back pain that lasted at least a week.
This variable was included in the 1988 Occupational Health supplement.
Universe
- 1988: Sample persons aged 18+ who worked last year at a civilian job and who had back pain for at least 1 week last year
Availability
- 1988
Weights
- 1988 : SUPP2WT
