Estimation of Glomerular Filtration Rate Based on Serum Cystatin C versus Creatinine in a Uruguayan Population

Table 3

Prevalence by categories of eGFR according to the stages of chronic kidney disease, for equation to estimate the GFR.

Stage of kidney disease	Estimated glomerular filtration rate
	eGFRcys	eGFRmdrd	eGFRepi	eGFRmix
<60 mL/min/1.73 m^2	26 (21.8)	7 (5.9)^‡	4	14 (11.8)*	<0.0001
60–89 mL/min/1.73 m^2	56 (47.1)	59 (49.6)	51 (42.8)	58 (48.7)	0.73
≥90 mL/min/1.73 m^2	37 (31.1)	53 (44.5)*	64 (53.8)^‡	47 (39.5)	0.004

eGFR_cys, eGFR_mdrd, eGFR_epi, and eGFR_mix indicate estimated glomerular filtration rate derived from serum cystatin C, from serum creatinine according to the Modification of Diet in Renal Disease or the Chronic Kidney Disease Epidemiology Collaboration equations or from both serum cystatin C and creatinine. Values are number of participants (%). values are for the overall difference across four estimates of glomerular filtration rate. Significance of the difference with eGFR_cys:*; ^†; ^‡; .