| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0-30 minutes | 137 |
76.1%
|
| 2 | 30-60 minutes | 41 |
22.8%
|
| 3 | 60-120 minutes | 1 |
0.6%
|
| 4 | >120 minutes | 1 |
0.6%
|
| Sysmiss | 502 |