MDRD equation, n= 485 | CKD-EPI equation, n= 476^{a} | |
---|---|---|

eGFR (ml/min/1.73 m^{2}) using first measure, mean (SD) | 66.4 (12.2) | 67.5 (12.1) |

eGFR (ml/min/1.73 m^{2}) using second measure, mean (SD) | 66.9 (11.9) | 68.3 (12.2) |

eGFR (ml/min/1.73 m^{2}) using both measures, mean (SD) | 66.6 (12.1) | 67.9 (12.0) |

Classified as having CKD based on first eGFR alone, n (%) | 311 (64) | 301 (63) |

Classified as having CKD based on two positive eGFRs, n (%) | 190 (39) | 182 (38) |

Incorrectly classified using a single measure, n (%) | 121 (25) | 119 (25) |

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*a**Nine patients excluded as sex missing. CKD*=*chronic kidney disease. CKD-EPI*=*Chronic Kidney Disease Epidemiology Collaboration. eGFR*=*estimated glomerular filtration rate. MDRD*=*Modification of Diet in Renal Disease. SD*=*standard deviation.*