| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 2563 |
84.4%
|
| 2 | Did not smoke cigarettes | 142 |
4.7%
|
| 3 | Yes | 109 |
3.6%
|
| 4 | No | 221 |
7.3%
|
| Sysmiss | 119 |