| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 8460 |
55%
|
| 1 | Less than once a week | 2740 |
17.8%
|
| 2 | At least once a week | 2832 |
18.4%
|
| 3 | Almost every day | 1353 |
8.8%
|
| 9 | Missing | 101 | |
| Sysmiss | 1236 |