| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3170 |
78.7%
|
| 2 | I did not smoke during the past 12 months | 469 |
11.6%
|
| 3 | Yes | 265 |
6.6%
|
| 4 | No | 125 |
3.1%
|
| Sysmiss | 36 |