| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 2547 |
94.4%
|
| 2 | Did not smoke cigarettes | 25 |
0.9%
|
| 3 | Yes | 105 |
3.9%
|
| 4 | No | 20 |
0.7%
|
| Sysmiss | 109 |