| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 524 |
84.5%
|
| 2 | I did not smoke during the past 12 months | 34 |
5.5%
|
| 3 | Yes | 32 |
5.2%
|
| 4 | No | 30 |
4.8%
|
| Sysmiss | 4 |