Table 1.

Correlation coefficients between the five estimated glomerular filtration rate formulae in urban black men and women

	CKD-EPI creatinine	CKD-EPI cystatin C	CKD-EPIcr-cys	Cockcroft-Gault	MDRD
Total
CKD-EPI creatinine	1	0.460	0.453	0.681	0.814
CKD-EPI cystatin C	0.460	1	0.994	0.341	0.473
CKD-EPIcr-cys	0.453	0.994	1	0.335	0.477
Cockcroft-Gault	0.681	0.341	0.335	1	0.779
MDRD	0.814	0.473	0.477	0.779	1
Men
CKD-EPI creatinine	1	0.368	0.366	0.796	0.863
CKD-EPI cystatin C	0.368	1	0.996	0.407	0.443
CKD-EPIcr-cys	0.366	0.996	1	0.403	0.440
Cockcroft-Gault	0.796	0.407	0.403	1	0.839
MDRD	0.863	0.443	0.440	0.839	1
Women
CKD-EPI creatinine	1	0.525	0.510	0.702	0.790
CKD-EPI cystatin C	0.525	1	0.995	0.403	0.496
CKD-EPIcr-cys	0.510	0.995	1	0.404	0.502
Cockcroft-Gault	0.702	0.403	0.404	1	0.817
MDRD	0.790	0.496	0.502	0.817	1

CKD-EPIcr-cys CKD-EPI creatinine-cystatin C, MDRD Modification of Diet in Renal Disease