| Value | Category | Cases | |
|---|---|---|---|
| 1 | I never smoked cigarettes | 1836 |
75.2%
|
| 2 | I have already stopped smoking | 158 |
6.5%
|
| 3 | Yes | 399 |
16.4%
|
| 4 | No | 47 |
1.9%
|
| Sysmiss | 18 |