| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3023 |
78.8%
|
| 2 | I did not smoke during the past 12 months | 314 |
8.2%
|
| 3 | Yes | 314 |
8.2%
|
| 4 | No | 187 |
4.9%
|
| Sysmiss | 23 |