| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 1022 |
7.5%
|
| 1 | Less than once a week | 3264 |
23.9%
|
| 2 | At least once a week | 9367 |
68.6%
|
| 3 | Almost every day | 0 |
0%
|
| 9 | 18 | ||
| Sysmiss | 119 |