| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 0 |
0%
|
| 2 | I did not smoke during the past 12 months | 0 |
0%
|
| 3 | Yes | 552 |
54.8%
|
| 4 | No | 455 |
45.2%
|
| Sysmiss | 3067 |