Table 5.

Performances of the MDRD and CG formulas according to CKD classes in kidney donorsa

Measured GFR (ml/min per 1.73 m2)NMDRD Formula (ml/min per 1.73 m2)CG Formula (ml/min per 1.73 m2)
BiasPrecisionBiasPrecision
≥90112−5.815.33.317.3
60–89500.611.58.314.3
• a Kidney donors were divided into two categories, according to the GFR levels used to define the stages of CKD in the K/DOQI CKD classification (5). Results obtained with these formulas were compared with GFR values obtained by measuring the renal clearance of 51Cr EDTA. Bias is defined as the mean difference between estimated and measured GFR. Precision is 1 SD of bias.