| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 3394 |
70.2%
|
| 1 | Less than once a week | 1058 |
21.9%
|
| 2 | At least once a week | 386 |
8%
|
| 3 | Almost every day | 0 |
0%
|
| 9 | 1 | ||
| Sysmiss | 43 |