| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 1187 |
60.9%
|
| 2 | 0 times | 508 |
26.1%
|
| 3 | 1 to 3 times | 148 |
7.6%
|
| 4 | 4 or more times | 107 |
5.5%
|
| Sysmiss | 35 |