| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 2302 |
77.6%
|
| 2 | I don't smoke anymore | 428 |
14.4%
|
| 3 | No, I never mixed tobacco with other drugs | 223 |
7.5%
|
| 4 | Yes, but only once | 9 |
0.3%
|
| 5 | Yes, I have mixed tobacco with other drugs on more than one occasion | 6 |
0.2%
|
| Sysmiss | 17 |