| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3142 |
77.8%
|
| 2 | I did not smoke during the past 12 months | 481 |
11.9%
|
| 3 | Yes | 258 |
6.4%
|
| 4 | No | 155 |
3.8%
|
| Sysmiss | 92 |