| Value | Category | Cases | |
|---|---|---|---|
| 1 | Days | 3 |
2.3%
|
| 2 | Weeks | 1 |
0.8%
|
| 3 | Months | 59 |
44.4%
|
| 4 | Years | 70 |
52.6%
|
| Sysmiss | 243 |