| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 37798 |
67.8%
|
| 2 | Did not smoke cigarettes | 6637 |
11.9%
|
| 3 | Yes | 7288 |
13.1%
|
| 4 | No | 4062 |
7.3%
|
| Sysmiss | 1196 |