| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3682 |
87.7%
|
| 2 | I did not smoke during the past 12 months | 240 |
5.7%
|
| 3 | Yes | 149 |
3.5%
|
| 4 | No | 127 |
3%
|
| Sysmiss | 18 |