| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 6586 |
66.1%
|
| 2 | I did not smoke during the past 12 months | 1181 |
11.8%
|
| 3 | Yes | 1829 |
18.4%
|
| 4 | No | 371 |
3.7%
|
| Sysmiss | 25 |