| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 1536 |
89.4%
|
| 2 | I did not smoke during the past year | 92 |
5.4%
|
| 3 | Yes | 62 |
3.6%
|
| 4 | No | 29 |
1.7%
|
| Sysmiss | 40 |