| Area under the curve (AUC) | P | Optimal cut-off value | Sensitivity (%) | Specificity (%) |
uYKL-40 (pg/ml) | 0.95 | <0.0001 | 171.5 | 84 | 82 |
uYKL-40/Cr (pg/mg) | 0.81 | <0.0001 | 159.2 | 72 | 71 |
u NGAL (ng/ml) | 0.90 | <0.0001 | 43.8 | 80 | 82 |
uNGAL/Cr (ng/mg) | 0.75 | <0.0001 | 29 | 76 | 63 |