| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 1078 |
81.2%
|
| 2 | I did not smoke during the past 12 months | 150 |
11.3%
|
| 3 | Yes | 59 |
4.4%
|
| 4 | No | 41 |
3.1%
|
| Sysmiss | 17 |