| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 15minutes | 54 |
65.9%
|
| 2 | Less than 30minutes | 12 |
14.6%
|
| 3 | 1 to 2hrs | 9 |
11%
|
| 4 | More than 2hrs | 7 |
8.5%
|
| Sysmiss | 3894 |