| Value | Category | Cases | |
|---|---|---|---|
| 1 | Years | 2 |
16.7%
|
| 2 | Months | 6 |
50%
|
| 3 | Weeks | 3 |
25%
|
| 7 | Not Applicable | 1 |
8.3%
|
| Sysmiss | 929 |