| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3882 |
77.7%
|
| 2 | I did not smoke during the past 12 months | 510 |
10.2%
|
| 3 | Yes | 385 |
7.7%
|
| 4 | No | 216 |
4.3%
|
| Sysmiss | 162 |