| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 639 |
43.4%
|
| 2 | I did not smoke during the past 12 months | 317 |
21.5%
|
| 3 | Yes | 397 |
26.9%
|
| 4 | No | 121 |
8.2%
|
| Sysmiss | 10 |