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* |
Note. *p < 0.05. **p < 0.01. ***p < 0.001.