| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked. | 4865 |
80.6%
|
| 2 | I do not smoke now. | 677 |
11.2%
|
| 3 | Yes | 410 |
6.8%
|
| 4 | No | 86 |
1.4%
|
| Sysmiss | 62 |