| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3447 |
90.3%
|
| 2 | I did not smoke during the past 12 months | 211 |
5.5%
|
| 3 | Yes | 75 |
2%
|
| 4 | No | 86 |
2.3%
|
| Sysmiss | 21 |