Table 4.
Distribution in sCyC Level Changes After CM Exposure and Relationship With CI‐AKIsCr
| Changes in sCyC | Proportion, n (%) | Sensitivity, % | Specificity, % | PPV, % | NPV, % | Youden Index |
|---|---|---|---|---|---|---|
| ≥5% | 388 (36.2%) | 84 | 65 | 5.4 | 99.4 | 0.49 |
| ≥10% | 259 (24.2%) | 80 | 77 | 7.7 | 99.4 | 0.57 |
| ≥15% | 187 (17.4%) | 80 | 83 | 9.6 | 99.4 | 0.63 |
| ≥25% | 114 (10.6%) | 68 | 90 | 14.9 | 99.2 | 0.58 |
Categorical values are expressed as total number and proportion of the global population (in parentheses). CI‐AKIsCr indicates contrast‐induced acute kidney injury as determined by serum creatinine; CM, contrast media; NPV, negative predictive value; PPV, positive predictive value; sCyC, serum cystatin C.