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Table 2 Proportion of estimated GFR values within 10% (accuracy 10%), 30% (accuracy 30%) and 50% (accuracy 50%) of the coresponding inulin clearance value.

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

  Accuracy 10% (95% CI) Accuracy 30% (95% CI) Accuracy 50% (95% CI)
Cockcroft-Gault formula 43.6% [35% – 52%] 41.3% [33% – 50%] 15% [9% – 22%]
BSA-Cockcroft Gault formula 53.2% [44% – 61%] 39.6% [31% – 48%] 7.1% [3.6% – 13%]
Abbreviated MDRD equation 37.3% [29% – 46%] 52.4% [43% – 60%] 10.3% [6% – 16,9%]
Mayo Clinic Quadratic equation 27.7% [20% – 36%] 39.7% [31% – 48%] 32.6% [24% – 41%]