Table 2—

Performance of predictive equations

Low GFR tertileMedium GFR tertileHigh GFR tertile
n414241
iGFR21.449.897.2
Range8–3434–6767–164
Creatinine-based formula
    CG35.656.198.4
Range16–8023–10237–208
r0.37*0.250.59
P vs. iGFRNS
    MDRD28.249.077.0
Range10–7628–8142–123
r0.590.39*0.65
P vs. iGFRNS
    rMDRD26.546.172.5
Range10–7126–7739–116
r0.600.39*0.65
P vs. iGFR
    MCQ29.957.695.4
Range10–8026–9456–153
r0.560.41*0.60
P vs. iGFRNS
Cystatin-based formula
    Arnal-Dade26.749.691.1
Range6–7021–8149–195
r0.620.210.30
P vs. iGFRNSNS
    MacIsaac36.460.9101.3
Range11–7733–13367–172
r0.640.270.42*
P vs. iGFRNS
    Tan33.958.599.1
Range9–7530–13165–170
r0.640.270.42*
P vs. iGFR*NS
    Rule25.246.186.0
Range7–6119–12051–166
r0.620.240.41*
P vs. iGFR*
  • P < 0.05;

  • * P < 0.01;

  • P < 0.001. CG, Cockroft-Gault.