| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1760 |
7.1%
|
| 2 | Monthly | 6469 |
26.1%
|
| 3 | Yearly | 3085 |
12.5%
|
| 4 | Less often | 5439 |
22%
|
| 5 | Not at all | 8014 |
32.4%
|
| Sysmiss | 817 |