| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 1598 |
67.5%
|
| 2 | Did not smoke cigarettes | 280 |
11.8%
|
| 3 | Yes | 367 |
15.5%
|
| 4 | No | 123 |
5.2%
|
| Sysmiss | 172 |