| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3531 |
53.3%
|
| 2 | I did not smoke during the past 12 months | 1290 |
19.5%
|
| 3 | Yes | 1352 |
20.4%
|
| 4 | No | 448 |
6.8%
|
| Sysmiss | 39 |