Flow chart of the study.

<p>Flow chart of the study.</p

Characteristics of the patients in the different mGFR categories.

<p>Characteristics of the patients in the different mGFR categories.</p

Estimation of P30 accuracy of the CKD-EPI and Schwartz equations according to age class and mGFR.

<p>Estimation of P30 accuracy of the CKD-EPI and Schwartz equations according to age class and mGFR.</p

Precision and accuracy of the CKD-EPI and Schwartz equations according to age and mGFR in adults (≥18 y).

<p>Precision and accuracy of the CKD-EPI and Schwartz equations according to age and mGFR in adults (≥18 y).</p

Estimation of bias (mean eGFR/mGFR ratio) with the CKD-EPI and Schwartz equations according to age class in the whole sample and in different mGFR categories.

<p>Estimation of bias (mean eGFR/mGFR ratio) with the CKD-EPI and Schwartz equations according to age class in the whole sample and in different mGFR categories.</p

Agreement between formulas and inulin clearance according to the GFR group in the French cohort and estimation of the diagnostic ability of the two formulas according to the CKD stage.

*<p>p<0.05 between Schwartz-Lyon formula and 2009-Schwartz - Mean ratio = mean ratio (eGFR/mGFR) value, AUC = area under ROC curves, 95% CI = 95% Confidence Interval.</p

Box plots showing eGFR/mGFR ratios according to age class and stage of chronic kidney disease.

<p>Box plots showing eGFR/mGFR ratios according to age class and stage of chronic kidney disease.</p

Formulas used for the estimation of glomerular filtration rate (ml/min/1.73 m²).

<p>Formulas used for the estimation of glomerular filtration rate (ml/min/1.73 m²).</p

Precision and accuracy of the CKD-EPI and Schwartz equations according to age and mGFR in children and adolescents.

<p>Precision and accuracy of the CKD-EPI and Schwartz equations according to age and mGFR in children and adolescents.</p

Agreement between formulas and inulin clearance according to age subgroup in the French and the Swedish cohorts.

<p>CCC = concordance correlation coefficient (CCC = ρ×Cb), ρ = Pearson coefficient, CI = Confidence Interval, Cb = factor for Pearson coefficient correction in CCC - *p<0.05 between formulas.</p