| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 30 minutes | 2 |
0.5%
|
| 2 | 30-45 Minutes | 1 |
0.2%
|
| 3 | 1 hour | 9 |
2.2%
|
| 4 | 2-3 hour | 373 |
91.2%
|
| 5 | More than 3 hours | 24 |
5.9%
|
| 9 | 9.Missing | 0 |
0%
|
| Sysmiss | 5960 |