Table 6.

Predictive performance in validation data set of 109 children of a biomarker-only GFR estimating formula using both cross-sectional markers and the change in biomarkers from visit 1 to visit 2

Model	eGFR	Bias (%)	95% Limits of Agreement (%)	Correlation	% within 30%	% within 10%
V	41.82 ± 13.26	−3.2	−36.1, 46.6	0.82	78	46
VI	42.29 ± 13.48	−2.1	−35.3, 48.1	0.82	78	49

Validation set has 109 individuals with mean iGFR = 43.72 ± 15.31 ml/min per 1.73 m².