| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily or once or more per week | 1300 |
13.4%
|
| 2 | Once or twice per month | 1773 |
18.3%
|
| 3 | Rearly | 3671 |
37.9%
|
| 4 | Never | 2840 |
29.3%
|
| 9 | 93 |
1%
|
|
| Sysmiss | 2332 |