| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 1991 |
88.4%
|
| 2 | Did not smoke cigarettes | 69 |
3.1%
|
| 3 | Yes | 160 |
7.1%
|
| 4 | No | 33 |
1.5%
|
| Sysmiss | 61 |