| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 4647 |
73.1%
|
| 2 | Did not smoke cigarettes | 425 |
6.7%
|
| 3 | Yes | 973 |
15.3%
|
| 4 | No | 310 |
4.9%
|
| Sysmiss | 983 |