| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 9039 |
81.8%
|
| 2 | I have not stopped smoking | 684 |
6.2%
|
| 3 | 1-3 months | 468 |
4.2%
|
| 4 | 4-11 months | 255 |
2.3%
|
| 5 | One year | 262 |
2.4%
|
| 6 | 2 years | 167 |
1.5%
|
| 7 | 3 years or longer | 171 |
1.5%
|
| Sysmiss | 67 |