| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 5119 |
78.4%
|
| 2 | I did not smoke during the past 12 months | 798 |
12.2%
|
| 3 | Yes | 445 |
6.8%
|
| 4 | No | 166 |
2.5%
|
| Sysmiss | 22 |