| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 1709 |
92.4%
|
| 2 | I no longer smoke | 76 |
4.1%
|
| 3 | No, I smoke, but I never mix tobacco with other drugs | 43 |
2.3%
|
| 4 | Yes, but only once or twice | 15 |
0.8%
|
| 5 | Yes, I have mixed tobacco with other drugs more than twice | 7 |
0.4%
|
| Sysmiss | 18 |