From: Comparative intra- and inter-observer reliability of two methods for evaluating intraoperative ultrasonography-based spinal cord hyperechogenicity intensity in degenerative cervical myelopathy
method
n
Observer A
Observer B
RSD%
GVR-A
28
1.837 + -0.671
2.25 + -0.577
0.32
GVR-B
0.555 + -0.157
0.602 + -0.186
0.298
t
10.298
-2.77
p
0
0.01