| Value | Category | Cases | |
|---|---|---|---|
| 1 | not at all | 1805 |
92.3%
|
| 2 | sometimes, but less than once in a month | 105 |
5.4%
|
| 3 | sometimes a week, but less than once a day | 35 |
1.8%
|
| 4 | everyday, at least one cigarette a day | 11 |
0.6%
|
| Sysmiss | 105 |