Table 9.

Diagnostic performance of TGF-β1 and CysC in predicting renal function decline.

Index	AUC	p-value	95% CI	Optimal cut-off value	Sensitivity	Specificity	Youden index
TGF-β1	0.726	<0.001	0.637–0.815	35.43 ng/mL	0.634	0.864	0.498
CysC	0.974	<0.001	0.952–0.996	11.55 (10 mg/L)	0.890	0.955	0.845
TGF-β1 + CysC	0.974	<0.001	0.952–0.996	—	0.890	0.955	0.845

AUC, area under the curve; 95% CI, 95% confidence interval.