. Author manuscript; available in PMC: 2010 Jul 1.

Published in final edited form as: Am J Kidney Dis. 2009 May 17;54(1):33–42. doi: 10.1053/j.ajkd.2009.03.008

Table 3.

Concordance between kidney function categories assigned using measured GFR vs. estimated kidney function

Equation	Concordant (%)^*	Discordant (%)
		Lower than mGFR	Higher than mGFR
MDRD Study	78	14	8
CG	73	12	16
CG_IBW	66	29	5

p-value <0.001 for the difference in concordance among all equations

Abbreviations: mGFF, measured glomerular filtration rate; MDRD, Modification of Diet in Renal Disease Study equation; CG, Cockcroft-Gault equation using actual body weight; CG_IBW, Cockcroft-Gault equation using ideal body weight.