| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 8341 |
59.5%
|
| 2 | I have not stopped smoking | 1828 |
13%
|
| 3 | 1-3 months | 801 |
5.7%
|
| 4 | 4-11 months | 730 |
5.2%
|
| 5 | One year | 455 |
3.2%
|
| 6 | 2 years | 527 |
3.8%
|
| 7 | 3 years or longer | 455 |
3.2%
|
| 8 | 878 |
6.3%
|
|
| Sysmiss | 97 |