| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 861 |
3.5%
|
| 2 | Monthly | 1243 |
5.1%
|
| 3 | Yearly | 1120 |
4.6%
|
| 4 | Less often | 2947 |
12%
|
| 5 | Not at all | 18421 |
74.9%
|
| Sysmiss | 516 |