| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3719 |
87.3%
|
| 2 | I did not smoke during the past 12 months | 334 |
7.8%
|
| 3 | Yes | 134 |
3.1%
|
| 4 | No | 71 |
1.7%
|
| Sysmiss | 15 |