| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 3595 |
70.8%
|
| 2 | I have never stopped smoking | 349 |
6.9%
|
| 3 | Less than 1 month | 220 |
4.3%
|
| 4 | 1-3 months ago | 158 |
3.1%
|
| 5 | 4-11 months ago | 112 |
2.2%
|
| 6 | One year ago | 146 |
2.9%
|
| 7 | 2 years ago | 137 |
2.7%
|
| 8 | 3 years ago or longer | 358 |
7.1%
|
| Sysmiss | 123 |