| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3811 |
79.6%
|
| 2 | I did not smoke during the past 12 months | 495 |
10.3%
|
| 3 | Yes | 330 |
6.9%
|
| 4 | No | 153 |
3.2%
|
| Sysmiss | 12 |