| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 854 |
3.5%
|
| 2 | Monthly | 715 |
2.9%
|
| 3 | Yearly | 1036 |
4.2%
|
| 4 | Less often | 2603 |
10.6%
|
| 5 | Not at all | 19384 |
78.8%
|
| Sysmiss | 516 |