| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 2935 |
83.7%
|
| 2 | I did not smoke during the past 12 months | 317 |
9%
|
| 3 | Yes | 173 |
4.9%
|
| 4 | No | 82 |
2.3%
|
| Sysmiss | 8 |