| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 963 |
3.9%
|
| 2 | Monthly | 1979 |
8%
|
| 3 | Yearly | 1261 |
5.1%
|
| 4 | Less often | 2605 |
10.6%
|
| 5 | Not at all | 17842 |
72.4%
|
| Sysmiss | 510 |