| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3234 |
78.2%
|
| 2 | I did not smoke during the past 12 months | 395 |
9.6%
|
| 3 | Yes | 300 |
7.3%
|
| 4 | No | 206 |
5%
|
| Sysmiss | 13 |