| Value | Category | Cases | |
|---|---|---|---|
| 1 | I never smoke | 2281 |
87.4%
|
| 2 | Ocassionaly but less once per month | 151 |
5.8%
|
| 3 | Sometimes during a month but less once a week | 41 |
1.6%
|
| 4 | Sometimes during a week but less once a day | 31 |
1.2%
|
| 5 | Everyday at least one cigarette a day | 107 |
4.1%
|
| Sysmiss | 15 |