| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not at all | 81 |
2.2%
|
| 1 | Once per month | 17 |
0.5%
|
| 2 | Once per week | 72 |
2%
|
| 3 | Twice per week | 152 |
4.2%
|
| 4 | More than twice per week | 3314 |
91.1%
|
| Sysmiss | 3747 |