| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 4440 |
82.4%
|
| 2 | I have not stopped smoking | 285 |
5.3%
|
| 3 | 1-3 months | 185 |
3.4%
|
| 4 | 4-11 months | 117 |
2.2%
|
| 5 | One year | 148 |
2.7%
|
| 6 | 2 years | 81 |
1.5%
|
| 7 | 3 years or longer | 133 |
2.5%
|
| Sysmiss | 20 |