| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 2921 |
84.2%
|
| 2 | I did not smoke during the past 12 months | 272 |
7.8%
|
| 3 | Yes | 138 |
4%
|
| 4 | No | 137 |
4%
|
| Sysmiss | 25 |