HARMONIZED DATA
| Label: | r13puffeff |
|---|---|
| Description: | r13puffeff:w13 amount effort r gave to lung function test |
| Item type: | Constructed variable |
| Answer type: | Enumerated |
| Answer choices: | 1.Gave full effort ; 2.not full effort-illness ; 3.not full effort-no reason ; .n:Not willing/able ; .s:Skipped |