| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 5479 |
83.9%
|
| 2 | I did not smoke during the past 12 months | 503 |
7.7%
|
| 3 | Yes | 343 |
5.3%
|
| 4 | No | 207 |
3.2%
|
| Sysmiss | 220 |