| Value | Category | Cases | |
|---|---|---|---|
| 1 | Years | 22 |
73.3%
|
| 2 | Months | 3 |
10%
|
| 3 | Weeks | 3 |
10%
|
| 7 | Not Applicable | 2 |
6.7%
|
| Sysmiss | 911 |