| Value | Category | Cases | |
|---|---|---|---|
| 1 | Days | 4 |
6.5%
|
| 2 | Weeks | 5 |
8.1%
|
| 3 | Months | 15 |
24.2%
|
| 4 | Years | 38 |
61.3%
|
| Sysmiss | 2127 |