| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not at all | 11013 |
90%
|
| 2 | Occasionally, but less than once a month | 906 |
7.4%
|
| 3 | Some time each month, but less than one cigarette per week | 177 |
1.4%
|
| 4 | Some time each week, but less than one cigarette per day | 67 |
0.5%
|
| 5 | Every day at least one cigarette | 76 |
0.6%
|
| Sysmiss | 419 |