HARMONIZED DATA
| Label: | r12back |
|---|---|
| Description: | r12back:w12 r had back problems |
| Item type: | Constructed variable |
| Answer type: | Enumerated |
| Answer choices: | 0.no ; 1.yes ; .a=asked prv wave ; .d=dk/na |
| Label: | r12back |
|---|---|
| Description: | r12back:w12 r had back problems |
| Item type: | Constructed variable |
| Answer type: | Enumerated |
| Answer choices: | 0.no ; 1.yes ; .a=asked prv wave ; .d=dk/na |