| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 1911 |
95.5%
|
| 2 | I did not smoke during the past year | 31 |
1.5%
|
| 3 | Yes | 37 |
1.8%
|
| 4 | No | 22 |
1.1%
|
| Sysmiss | 13 |