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Table 3 Comparison of predictive equations during follow-up in CKD patients with non-diabetic nephropathies.

From: Accuracy and limitations of equations for predicting the glomerular filtration rate during follow-up of patients with non-diabetic nephropathies

  Method of GFR estimation Slope of GFR
(ml/min/1.73 m2/year)
Median and [range]
p value in the Friedman test
(non parametric ANOVA)
P value in Dunn's multiple comparison post-test
Subgroup of patients with deteriorating renal function
(n = 65)
Inulin Clearance -3.72 [-0.48 to -72]   
  GFR Cockcroft-Gault -4.08 [-0.36 to -60]   NS
  BSA-modified Cockcroft-Gault Formula -3.48 [-0.24 to -56] p = 0.29 NS
  Abbreviated MDRD equation -3.12 [0 to -64]   NS
  Mayo Clinic Quadratic equation -3.73 [0 to -78]   NS
Subgroup of patients with improving renal function
(n = 61)
Inulin Clearance +6 [+0.36 to +99]   
  GFR Cockcroft-Gault +4.2 [0 to +102] p < 0.001 p < 0.05
  BSA-modified Cockcroft-Gault Formula +3.36 [+0.12 to +109]   p < 0.05
  Abbreviated MDRD equation +5.04 [0 to +138]   p < 0.05
  Mayo Clinic Quadratic equation +4.74 [0 to +53]   p < 0.05