| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 1914 |
63.9%
|
| 2 | I have not stopped smoking | 395 |
13.2%
|
| 3 | 1-3 months | 240 |
8%
|
| 4 | 4-11 months | 158 |
5.3%
|
| 5 | One year | 108 |
3.6%
|
| 6 | 2 years | 81 |
2.7%
|
| 7 | 3 years or longer | 100 |
3.3%
|
| Sysmiss | 65 |