| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 15minutes | 524 |
71.4%
|
| 2 | Less than 30minutes | 137 |
18.7%
|
| 3 | 1 to 2hrs | 57 |
7.8%
|
| 4 | More than 2hrs | 16 |
2.2%
|
| Sysmiss | 3242 |