| Value | Category | Cases | |
|---|---|---|---|
| 1 | Days | 4 |
3.8%
|
| 2 | Weeks | 10 |
9.5%
|
| 3 | Months | 57 |
54.3%
|
| 4 | Years | 34 |
32.4%
|
| Sysmiss | 408 |