| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 5519 |
90.7%
|
| 2 | I did not smoke during the past 12 months | 310 |
5.1%
|
| 3 | Yes | 150 |
2.5%
|
| 4 | No | 105 |
1.7%
|
| Sysmiss | 61 |