| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 14 |
10.8%
|
| 1 | Once per month | 32 |
24.6%
|
| 2 | Once per week | 61 |
46.9%
|
| 3 | Twice per week | 13 |
10%
|
| 4 | More than twice per week | 10 |
7.7%
|
| Sysmiss | 248 |