| Value | Category | Cases | |
|---|---|---|---|
| 1 | Years | 1 |
11.1%
|
| 2 | Months | 1 |
11.1%
|
| 3 | Weeks | 4 |
44.4%
|
| 7 | Not Applicable | 3 |
33.3%
|
| Sysmiss | 932 |