| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3703 |
88.3%
|
| 2 | I did not smoke during the past 12 months | 273 |
6.5%
|
| 3 | Yes | 126 |
3%
|
| 4 | No | 92 |
2.2%
|
| Sysmiss | 126 |