| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 30 minutes | 1512 |
44.4%
|
| 2 | 30 minutes to 1 hour | 720 |
21.2%
|
| 3 | 1-5 Hours | 1050 |
30.9%
|
| 4 | More than 5 Hours | 121 |
3.6%
|
| Sysmiss | 147 |