| Value | Category | Cases | |
|---|---|---|---|
| 1 | Days | 7 |
9.1%
|
| 2 | Weeks | 21 |
27.3%
|
| 3 | Months | 21 |
27.3%
|
| 4 | Years | 28 |
36.4%
|
| Sysmiss | 2107 |