| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 30 minutes | 6418 |
72.2%
|
| 2 | 30 minutes to 1 hour | 1448 |
16.3%
|
| 3 | 1 - 5 Hours | 960 |
10.8%
|
| 4 | More than 5 Hours | 59 |
0.7%
|
| Sysmiss | 590 |