| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 365 |
10%
|
| 1 | Once per month | 659 |
18.1%
|
| 2 | Once per week | 1405 |
38.6%
|
| 3 | Twice per week | 357 |
9.8%
|
| 4 | More than twice per week | 850 |
23.4%
|
| Sysmiss | 3747 |