| Value | Category | Cases | |
|---|---|---|---|
| 1 | Almost every day | 33 |
4.5%
|
| 2 | At least once a week | 64 |
8.7%
|
| 3 | Less than once a week | 91 |
12.4%
|
| 4 | Not at all | 538 |
73.5%
|
| 9 | 6 |
0.8%
|
|
| Sysmiss | 482 |