| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1867 |
7.6%
|
| 2 | Monthly | 1360 |
5.5%
|
| 3 | Yearly | 771 |
3.1%
|
| 4 | Less often | 2769 |
11.3%
|
| 5 | Not at all | 17825 |
72.5%
|
| Sysmiss | 516 |