| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 144 |
15.5%
|
| 2 | Monthly | 335 |
36.1%
|
| 3 | Yearly | 110 |
11.9%
|
| 4 | Not all | 339 |
36.5%
|
| Sysmiss | 71 |