| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 2621 |
76.4%
|
| 2 | I did not smoke during the past 12 months | 301 |
8.8%
|
| 3 | Yes | 302 |
8.8%
|
| 4 | No | 205 |
6%
|
| Sysmiss | 21 |