| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 634 |
68.3%
|
| 2 | Monthly | 128 |
13.8%
|
| 3 | Yearly | 43 |
4.6%
|
| 4 | Not all | 123 |
13.3%
|
| Sysmiss | 71 |