| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 340 |
1.4%
|
| 2 | Monthly | 693 |
2.8%
|
| 3 | Yearly | 3132 |
12.7%
|
| 4 | Less often | 4627 |
18.8%
|
| 5 | Not at all | 15858 |
64.3%
|
| Sysmiss | 510 |