| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 1184 |
69.2%
|
| 2 | 0 times | 349 |
20.4%
|
| 3 | 1 to 3 times | 125 |
7.3%
|
| 4 | 4 or more times | 52 |
3%
|
| Sysmiss | 38 |