| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 2876 |
75%
|
| 2 | 0 times | 377 |
9.8%
|
| 3 | 1 to 3 times | 342 |
8.9%
|
| 4 | 4 or more times | 241 |
6.3%
|
| Sysmiss | 76 |