| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 630 |
68.1%
|
| 2 | I have quit smoking | 163 |
17.6%
|
| 3 | Yes | 117 |
12.6%
|
| 4 | No | 15 |
1.6%
|
| Sysmiss | 6 |