| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 1248 |
72.9%
|
| 2 | 0 times | 230 |
13.4%
|
| 3 | 1 to 3 times | 151 |
8.8%
|
| 4 | 4 or more times | 83 |
4.8%
|
| Sysmiss | 21 |