HARMONIZED DATA
| Label: | s4puffref |
|---|---|
| Description: | s4puffref:w4 s didn't complete lung function: refused |
| Item type: | Constructed variable |
| Answer type: | Enumerated |
| Answer choices: | 0.no ; 1.yes ; .c:completed test ; .m:Missing ; .s:skipped ; .u:Unmar ; .v:SP NR |