| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 30 minutes | 1 |
0.3%
|
| 2 | 30-45 Minutes | 3 |
0.8%
|
| 3 | 1 hour | 47 |
12.4%
|
| 4 | 2-3 hour | 320 |
84.4%
|
| 5 | More than 3 hours | 8 |
2.1%
|
| 9 | 9.Missing | 0 |
0%
|
| Sysmiss | 5990 |