| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 1674 |
88.7%
|
| 2 | I did not smoke during the past 12 months | 93 |
4.9%
|
| 3 | Yes | 67 |
3.6%
|
| 4 | No | 53 |
2.8%
|
| Sysmiss | 20 |