| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 368 |
1.5%
|
| 2 | Monthly | 1778 |
7.2%
|
| 3 | Yearly | 1035 |
4.2%
|
| 4 | Less often | 2309 |
9.3%
|
| 5 | Not at all | 19277 |
77.8%
|
| Sysmiss | 817 |