| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 2369 |
68.8%
|
| 2 | I have not stopped smoking | 292 |
8.5%
|
| 3 | 1-3 months | 320 |
9.3%
|
| 4 | 4-6 months | 107 |
3.1%
|
| 5 | From 7 months to one year | 160 |
4.6%
|
| 6 | More than one year | 194 |
5.6%
|
| Sysmiss | 32 |