Table 3.

ROC analyses

RKF cut-off to be identified (mL/min/1.73 m2)	AUC	95% CI	Predicted eRKF cut-off (mL/min/1.73 m2)	Sensitivity (%)	Specificity (%)
1	0.960	0.929 to 0.990	1	97.8	38.5
			2	91.2	84.6
			3	81.0	100
2	0.915	0.865 to 0.964	2	94.3	59.3
			3	85.4	77.8
			4	75.6	88.9
3	0.899	0.849 to 0.949	3	92.2	66.0
			4	82.5	76.6
			5	68.9	89.4
4	0.893	0.842 to 0.943	4	90.5	69.7
			5	78.6	84.8
			6	54.8	92.4
5	0.891	0.839 to 0.942	5	82.9	77.5
			6	64.3	92.5
			7	41.4	100

ROC receiving operator characteristic, RKF residual kidney function, AUC area under the curve, CI confidence interval, eRKF estimated residual kidney function