| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 1268 |
58.8%
|
| 2 | 0 times | 591 |
27.4%
|
| 3 | 1 to 3 times | 183 |
8.5%
|
| 4 | 4 or more times | 114 |
5.3%
|
| Sysmiss | 19 |