| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 468 |
62.1%
|
| 2 | 0 times | 124 |
16.4%
|
| 3 | 1 to 3 times | 125 |
16.6%
|
| 4 | 4 or more times | 37 |
4.9%
|
| Sysmiss | 15 |