| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 5017 |
90.2%
|
| 2 | I did not smoke during the past 12 months | 360 |
6.5%
|
| 3 | Yes | 82 |
1.5%
|
| 4 | No | 104 |
1.9%
|
| Sysmiss | 36 |