| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 3017 |
61.4%
|
| 2 | Did not smoke cigarettes | 548 |
11.2%
|
| 3 | Yes | 747 |
15.2%
|
| 4 | No | 602 |
12.3%
|
| Sysmiss | 1453 |