| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 2240 |
77.5%
|
| 2 | Did not smoke cigarettes | 219 |
7.6%
|
| 3 | Yes | 390 |
13.5%
|
| 4 | No | 40 |
1.4%
|
| Sysmiss | 170 |