| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 8452 |
76.2%
|
| 2 | I did not smoke during the past 12 months | 1423 |
12.8%
|
| 3 | Yes | 707 |
6.4%
|
| 4 | No | 510 |
4.6%
|
| Sysmiss | 21 |