| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 3384 |
93.6%
|
| 2 | Did not smoke cigarettes | 77 |
2.1%
|
| 3 | Yes | 127 |
3.5%
|
| 4 | No | 28 |
0.8%
|
| Sysmiss | 67 |