| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 14267 |
95.2%
|
| 2 | I have not stopped smoking | 297 |
2%
|
| 3 | 1-3 months | 314 |
2.1%
|
| 4 | 4-11 months | 113 |
0.8%
|
| Sysmiss | 619 |