| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 1459 |
86.8%
|
| 2 | I have not stopped smoking | 86 |
5.1%
|
| 3 | 1-3 months | 105 |
6.3%
|
| 4 | 4-11 months | 30 |
1.8%
|
| Sysmiss | 151 |