| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 6677 |
27%
|
| 2 | Monthly | 1634 |
6.6%
|
| 3 | Yearly | 723 |
2.9%
|
| 4 | Less often | 2494 |
10.1%
|
| 5 | Not at all | 13239 |
53.5%
|
| Sysmiss | 817 |