| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3763 |
79.9%
|
| 2 | I did not smoke during the past 12 months | 375 |
8%
|
| 3 | Yes | 350 |
7.4%
|
| 4 | No | 220 |
4.7%
|
| Sysmiss | 91 |