| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 2696 |
82.1%
|
| 2 | I did not smoke during the past 12 months | 226 |
6.9%
|
| 3 | Yes | 77 |
2.3%
|
| 4 | No | 286 |
8.7%
|
| Sysmiss | 28 |