Table 3 The diagnostic performance of the oral radiologist against the golden reference.
Diagnostic performance | Cohen’s kappa | Kappa index | P value | |||||
|---|---|---|---|---|---|---|---|---|
Sensitivity (95% confidence limits) | Specificity (95% confidence limits) | PPV (95% confidence limits) | NPV (95% confidence limits) | Test accuracy (95% confidence limits) | ||||
Condylar flattening | 0.89 (0.82–0.96) | 1.00 (1.00–1.00) | 1.00 (1.00–1.00) | 0.97 (0.95–0.99) | 0.98 (0.96–0.99) | 0.93 | Near perfect agreement | 0.0000** |
Subcortical cyst | 0.93 (0.88–0.97) | 0.98 (0.96–1.00) | 0.96 (0.93–0.99) | 0.95 (0.93–0.98) | 0.96 (0.94–0.98) | 0.91 | Near perfect agreement | 0.0000** |
Surface erosion | 0.91 (0.74–1.00) | 1.00 (1.00–1.00) | 1.00 (1.00–1.00) | 1.00 (0.99–1.00) | 1.00 (0.99–1.00) | 0.96 | Near perfect agreement | 0.0000** |
Osteophyte | 0.95 (0.88–1.00) | 0.98 (0.97–1.00) | 0.86 (0.75–0.96) | 0.99 (0.98–1.00) | 0.98 (0.96–0.99) | 0.89 | Near perfect agreement | 0.0000** |
All signs | 0.92 (0.88–0.95) | 0.99 (0.98–1.00) | 0.96 (0.93–0.98) | 0.98 (0.97–0.99) | 0.98 (0.97–0.98) | 0.92 | Near perfect agreement | 0.0000** |
