| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 1191 |
79.3%
|
| 2 | I did not smoke during the past 12 months | 151 |
10.1%
|
| 3 | Yes | 91 |
6.1%
|
| 4 | No | 68 |
4.5%
|
| Sysmiss | 31 |