| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 4538 |
60.1%
|
| 2 | I have already stopped smoking cigarettes | 1648 |
21.8%
|
| 3 | Yes | 1198 |
15.9%
|
| 4 | No | 166 |
2.2%
|
| Sysmiss | 177 |