| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 30 minutes | 4152 |
78.6%
|
| 2 | 30 minutes to 1 hour | 865 |
16.4%
|
| 3 | 1 - 5 Hours | 260 |
4.9%
|
| 4 | More than 5 Hours | 7 |
0.1%
|
| Sysmiss | 33 |