| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 2943 |
90.8%
|
| 2 | I did not smoke during the past 12 months | 99 |
3.1%
|
| 3 | Yes | 102 |
3.1%
|
| 4 | No | 96 |
3%
|
| Sysmiss | 5 |