| Value | Category | Cases | |
|---|---|---|---|
| 1 | week | 1 |
4.8%
|
| 2 | month | 7 |
33.3%
|
| 3 | quarterly | 7 |
33.3%
|
| 4 | year | 6 |
28.6%
|
| Sysmiss | 5056 |