| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 30 minutes | 6 |
0.9%
|
| 2 | 30-45 Minutes | 14 |
2.1%
|
| 3 | 1 hour | 98 |
14.5%
|
| 4 | 2-3 hour | 548 |
81.3%
|
| 5 | More than 3 hours | 7 |
1%
|
| 9 | 9.Missing | 1 |
0.1%
|
| Sysmiss | 5695 |