| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 6333 |
72.5%
|
| 2 | I did not smoke during the past 12 months | 916 |
10.5%
|
| 3 | Yes | 1207 |
13.8%
|
| 4 | No | 283 |
3.2%
|
| Sysmiss | 50 |