Table 4.
Diagnostic performance of parameters for identifying significant atherosclerotic renal artery stenosis
| Parameter | AUC | 95% CI | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|---|---|
| CRS | 0.659 | 0.530–0.773 | 57 | 75 | 83 | 44 |
| CAD | 0.755 | 0.631–0.854 | 91 | 60 | 83 | 75 |
| Drugs | 0.680 | 0.561–0.799 | 73 | 65 | 82 | 52 |
| CRS+CAD+drugs | 0.862 | 0.753–0.935 | 87 | 75 | 88 | 72 |
Abbreviations: AUC, area under the curve; CAD coronary artery disease; CI, confidence interval; CRS, captopril renal scintigraphy.
Positive predictive value (PPV) and negative predictive value (NPV) were calculated according to the following formula: (TP/TP+FP) × 100 and (TN/FN+TN) × 100, respectively, where TP=true positive, FP=false positive, TN=true negative, and FN=false negative.