| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 15minutes | 109 |
71.2%
|
| 2 | Less than 30minutes | 30 |
19.6%
|
| 3 | 1 to 2hrs | 11 |
7.2%
|
| 4 | More than 2hrs | 3 |
2%
|
| Sysmiss | 3823 |