| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 5302 |
21.5%
|
| 2 | Monthly | 1201 |
4.9%
|
| 3 | Yearly | 700 |
2.8%
|
| 4 | Less often | 1991 |
8.1%
|
| 5 | Not at all | 15456 |
62.7%
|
| Sysmiss | 510 |