Table 2.

Weighted Kappa agreement.

Imaging modality	Kappa	CI 95%	Significance
Radiograph
Inter-observer agreement	0.50	0.25–0.75	0.001*
Reviewer 1 vs. Final diagnosis	0.50	0.23–0.77	0.002*
Reviewer 2 vs. Final diagnosis	0.50	0.25–0.75	0.001*
CT
Inter-Observer agreement	0.75	0.55–0.95	<0.001*
Reviewer 1 vs. Final diagnosis	0.90	0.77–1.04	<0.001*
Reviewer 2 vs. Final diagnosis	0.85	0.69–1.01	<0.001*

CI: confidence interval.

*Significance < 0.05.