| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 1585 |
95.5%
|
| 2 | I have not stopped smoking | 41 |
2.5%
|
| 3 | 1-3 months | 27 |
1.6%
|
| 4 | 4-11 months | 7 |
0.4%
|
| Sysmiss | 63 |