| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 552 |
59.5%
|
| 2 | Monthly | 150 |
16.2%
|
| 3 | Yearly | 48 |
5.2%
|
| 4 | Not all | 178 |
19.2%
|
| Sysmiss | 71 |