| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3082 |
65.8%
|
| 2 | I did not smoke during the past 12 months | 525 |
11.2%
|
| 3 | Yes | 870 |
18.6%
|
| 4 | No | 204 |
4.4%
|
| Sysmiss | 31 |