From: An investigation into the validity of cervical spine motion palpation using subjects with congenital block vertebrae as a 'gold standard'
All Blocks
C2-3 Block
C5-6 Block
Kappa Values
K = 0.675
K = 0.756
K = 0.460
SE = 0.041
SE = 0.045
SE = 0.091
Z = 17.067
Z = 16.823
Z = 5.039
Specificity
98%
91%
Sensitivity
74%
78%
55%