| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 990 |
75.8%
|
| 2 | Did not smoke cigarettes | 143 |
10.9%
|
| 3 | Yes | 74 |
5.7%
|
| 4 | No | 99 |
7.6%
|
| Sysmiss | 200 |