Table 2. ROC analysis of the inclusion variables in this study.
| Variable | AUC (95% CI) | % Sensitivity (95% CI) | P value | % Specificity (95% CI) | Associated criterion |
|---|---|---|---|---|---|
| sCr | 0.717 (0.592–0.821) | 54.55 (36.4–71.9) | Reference | 100 (89.4–100.0) | >85.9 |
| BUN | 0.904 (0.806–0.962) | 78.79 (61.1–91.0) | 0.0013 | 96.97 (84.2–99.9) | >8.9 |
| sNGAL | 0.992 (0.931–1.000) | 93.94 (79.8–99.3) | <0.0001 | 100 (89.4–100.0) | >14,642 |
| uNGAL | 0.999 (0.944–1.000) | 96.97 (84.2–99.9) | <0.0001 | 100 (89.4–100.0) | >6,773 |
| uNCR | 1.000 (0.946–1.000) | 100 (89.4–100.0) | <0.0001 | 100 (89.4–100.0) | >6,701.12 |
ROC, receiver operating characteristic; AUC, area under the ROC curve; CI, confidence interval; sCr, serum creatinine; BUN, blood urea nitrogen; sNGAL, serum NGAL; uNGAL, urinary NGAL; uNCR, uNGAL/uCr ratio.