| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 130 |
5.6%
|
| 1 | Less than once a week | 201 |
8.6%
|
| 2 | At least once a week | 430 |
18.4%
|
| 3 | Almost every day | 1581 |
67.5%
|
| 9 | Missing | 4 | |
| Sysmiss | 226 |