Table 3 Sensitivity and specificity for different cut-scores on the SAPAS-AV
Cut-off score | Sensitivity (95% CI) | Specificity (95% CI) | Positive predictive value (95% CI) | Negative predictive value (95% CI) | Overall Diagnostic Accuracy (%) | Kappa value for agreement |
|---|---|---|---|---|---|---|
≥ 2 | 0.94 (0.84 to 0.99) | 0.57 (0.37 to 0.76) | 0.80 (0.68 to 0.89) | 0.84 (0.60 to 0.97) | 81 | 0.56*** |
≥ 3 | 0.87 (0.74 to 0.94) | 0.86 (0.67 to 0.96) | 0.92 (0.80 to 0.98) | 0.77 (0.59 to 0.90) | 86 | 0.71*** |
≥ 4 | 0.35 (0.22 to 0.49) | 0.96 (0.82 to 1.0) | 0.95 (0.74 to 1.0) | 0.44 (0.32 to 0.58) | 56 | 0.24** |
≥ 5 | 0.14 (0.06 to 0.26) | 1.0 (0.88 to 1.0) | 1.0 (0.59 to 1.0) | 0.38 (0.27 to 0.51) | 44 | 0.10* |