| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 30 minutes | 1260 |
94.3%
|
| 2 | 30 minutes to 1 hour | 65 |
4.9%
|
| 3 | 1 - 5 Hours | 9 |
0.7%
|
| 4 | More than 5 Hours | 2 |
0.1%
|
| Sysmiss | 1611 |