| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less Than 4 Hours | 95 |
4.9%
|
| 2 | 4 - 8 Hours | 319 |
16.3%
|
| 3 | More Than 8 Hours | 1539 |
78.8%
|
| Sysmiss | 361 |