Table 2.

Consistency test of fracture vertebral compression ratio measured by two spinal surgeons

	Intra-class correlation	95% confidence interval		F-test with true value 0
		Lower limit	Upper limit	Value	df1	df2	Significance
Single measurement	0.957	0.927	0.975	45.460	53	53	0.000
Average measurement	0.978	0.966	0.987	45.460	53	53	0.000