| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 9260 |
80.7%
|
| 2 | I did not smoke during the past 12 months | 1094 |
9.5%
|
| 3 | Yes | 642 |
5.6%
|
| 4 | No | 472 |
4.1%
|
| Sysmiss | 68 |