| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 2970 |
81.3%
|
| 2 | Did not smoke cigarettes | 198 |
5.4%
|
| 3 | Yes | 432 |
11.8%
|
| 4 | No | 53 |
1.5%
|
| Sysmiss | 98 |