| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 20663 |
83.8%
|
| 2 | Did not smoke cigarettes | 997 |
4%
|
| 3 | Yes | 2626 |
10.7%
|
| 4 | No | 368 |
1.5%
|
| Sysmiss | 853 |