| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 1540 |
77.7%
|
| 2 | I have not stopped smoking | 84 |
4.2%
|
| 3 | 1-3 months | 132 |
6.7%
|
| 4 | 4-11 months | 41 |
2.1%
|
| 5 | One year | 66 |
3.3%
|
| 6 | 2 years | 39 |
2%
|
| 7 | 3 years or longer | 80 |
4%
|
| Sysmiss | 9 |