| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 2138 |
75.1%
|
| 2 | Did not smoke cigarettes | 309 |
10.9%
|
| 3 | Yes | 271 |
9.5%
|
| 4 | No | 128 |
4.5%
|
| Sysmiss | 63 |