| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 4666 |
87.3%
|
| 2 | I did not smoke during the past 12 months | 422 |
7.9%
|
| 3 | Yes | 142 |
2.7%
|
| 4 | No | 117 |
2.2%
|
| Sysmiss | 41 |