| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. twice a day | 166 |
5.3%
|
| 1 | 1. every day | 1074 |
34.1%
|
| 2 | 2. 2-4 times per week | 1463 |
46.5%
|
| 3 | 3. once a week | 440 |
14%
|
| 4 | 4. less than once a week | 2 |
0.1%
|
| Sysmiss | 1393 |