| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 2728 |
77.3%
|
| 2 | I don't smoke anymore | 558 |
15.8%
|
| 3 | No, I never mixed tobacco with other drugs | 222 |
6.3%
|
| 4 | Yes, but only once | 17 |
0.5%
|
| 5 | Yes, I have mixed tobacco with other drugs on more than one occasion | 5 |
0.1%
|
| Sysmiss | 18 |