Table 4.

Comparative Diagnostic Performance Characteristics of Urinary Biomarkers for the Identification of Established AKI

Time (hours)	AUC-ROC (95% CI)			Patients (no.)
	Fg	KIM-1	NAG	AKI	No AKI
Preoperative	0.56 (0.36–0.74)	0.52 (0.33–0.71)	0.55 (0.36–0.73)	7	22
Postoperative	0.68 (0.48–0.84)	0.66 (0.46–0.82)	0.62 (0.42–0.79)	6	23
2–6	0.63 (0.42–0.81)	0.75 (0.54–0.90)	0.51 (0.30–0.71)	5	20
6–12	0.52 (0.26–0.77)	0.58 (0.32–0.82)	0.75 (0.48–0.93)	4	12
12–24	0.65 (0.44–0.83)	0.64 (0.43–0.82)	0.52 (0.31–0.72)	6	20
24–48	0.72 (0.53–0.87)	0.55 (0.37–0.73)	0.61 (0.42–0.78)	7	24
48–72	0.70 (0.51–0.85)	0.52 (0.34–0.71)	0.51 (0.32–0.70)	6	24
72–96	0.61 (0.40–0.79)	0.51 (0.30–0.71)	0.45 (0.32–0.74)	5	21

AUC-ROC, area under the receiver operating characteristic curve.