| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 15minutes | 368 |
75.9%
|
| 2 | Less than 30minutes | 84 |
17.3%
|
| 3 | 1 to 2hrs | 25 |
5.2%
|
| 4 | More than 2hrs | 8 |
1.6%
|
| Sysmiss | 3491 |