| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3469 |
93.5%
|
| 2 | I did not smoke during the past 12 months | 86 |
2.3%
|
| 3 | Yes | 15 |
0.4%
|
| 4 | No | 142 |
3.8%
|
| Sysmiss | 4 |