| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 627 |
2.5%
|
| 2 | Monthly | 868 |
3.5%
|
| 3 | Yearly | 1085 |
4.4%
|
| 4 | Less often | 1899 |
7.7%
|
| 5 | Not at all | 20113 |
81.8%
|
| Sysmiss | 516 |