Criteria Intra class correlation coefficient Confidence interval 95%
Auricular surface organized transversally 0.379 0.233 - 0.509
Auricular surface has granular texture 0.325 0.166 - 0.467
Porosity of auricular surface 0.689 0.594- 0.766
Apical activity of auricular surface 0.437 0.240 - 0.587
Total score for auricular surface 0.582 0.464 - 0.680
Acetabular rim 0.570 0.451 - 0.670
Acetabular base 0.435 0.253 - 0.578
Apical activity of posterior Acetabulum horn 0.695 0.601 - 0.770
Total acetabulum score 0.652 0.525 - 0.746
Overall score 0.643 0.536 - 0.729
Table 3: Inter-observer variability: Intraclass correlation coefficient for subjects over 50.
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