| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 1104 |
61.4%
|
| 2 | I did not smoke in the past years | 321 |
17.9%
|
| 3 | Yes | 245 |
13.6%
|
| 4 | No | 127 |
7.1%
|
| Sysmiss | 4 |