| Value | Category | Cases | |
|---|---|---|---|
| 1 | Years | 6807 |
91.8%
|
| 3 | Months | 568 |
7.7%
|
| 5 | Weeks | 20 |
0.3%
|
| 7 | Days | 22 |
0.3%
|
| Sysmiss | 32008 |