| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 5927 |
67.5%
|
| 2 | I have already stopped smoking cigarettes | 1209 |
13.8%
|
| 3 | Yes | 1263 |
14.4%
|
| 4 | No | 381 |
4.3%
|
| Sysmiss | 155 |