| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 4062 |
86.8%
|
| 2 | I did not smoke during the past 12 months | 336 |
7.2%
|
| 3 | Yes | 163 |
3.5%
|
| 4 | No | 117 |
2.5%
|
| Sysmiss | 20 |