| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 1621 |
76.1%
|
| 2 | I did not smoke during the past 12 months | 269 |
12.6%
|
| 3 | Yes | 144 |
6.8%
|
| 4 | No | 96 |
4.5%
|
| Sysmiss | 3 |