| Value | Category | Cases | |
|---|---|---|---|
| 1 | Days | 11 |
18.3%
|
| 2 | Weeks | 6 |
10%
|
| 3 | Months | 30 |
50%
|
| 4 | Years | 13 |
21.7%
|
| Sysmiss | 744 |