| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 2392 |
83.8%
|
| 2 | 0 times | 250 |
8.8%
|
| 3 | 1 to 3 times | 177 |
6.2%
|
| 4 | 4 or more times | 34 |
1.2%
|
| Sysmiss | 29 |