| Value | Category | Cases | |
|---|---|---|---|
| 1 | hours | 4 |
1.2%
|
| 2 | days | 7 |
2.1%
|
| 3 | months | 55 |
16.3%
|
| 4 | years | 271 |
80.4%
|
| Sysmiss | 1039 |