| Value | Category | Cases | |
|---|---|---|---|
| 1 | I do not smoke | 3987 |
77.4%
|
| 2 | Yes | 492 |
9.5%
|
| 3 | No | 395 |
7.7%
|
| 4 | Do not know | 279 |
5.4%
|
| Sysmiss | 155 |