| Value | Category | Cases | |
|---|---|---|---|
| 1 | less than 15 minutes | 4216 |
58.8%
|
| 2 | 15-30 mins | 1621 |
22.6%
|
| 3 | 30-60 mins | 787 |
11%
|
| 4 | 1-2 hours | 442 |
6.2%
|
| 5 | over 2 hours | 98 |
1.4%
|
| Sysmiss | 14 |