| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 6141 |
78.3%
|
| 2 | I did not smoke during the past 12 months | 903 |
11.5%
|
| 3 | Yes | 628 |
8%
|
| 4 | No | 173 |
2.2%
|
| Sysmiss | 1 |