| Value | Category | Cases | |
|---|---|---|---|
| 1 | Years | 10 |
28.6%
|
| 2 | Months | 20 |
57.1%
|
| 3 | Weeks | 0 |
0%
|
| 7 | Not Applicable | 5 |
14.3%
|
| Sysmiss | 906 |