| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 1697 |
64.5%
|
| 2 | I have not stopped smoking | 299 |
11.4%
|
| 3 | 1-3 months | 264 |
10%
|
| 4 | 4-11 months | 135 |
5.1%
|
| 5 | One year | 88 |
3.3%
|
| 6 | 2 years | 60 |
2.3%
|
| 7 | 3 years or longer | 88 |
3.3%
|
| Sysmiss | 41 |