Comparison of CKD-EPI Cystatin C and Creatinine Glomerular Filtration Rate Estimation Equations in Asian Indians

Table 3

Distribution of study population by mean estimated GFR categories.

Equation	Distribution*  𝑛, %
	Estimated GFR categories (mL/min/1.73 m^2)					eGFR <60
	>90	60–90	30–60	15–30	≤15
Creatinine 2009 (age, sex, and race)	1495, 52.0	1177, 40.9	191, 6.6	11, 0.4	3, 0.1	205, 7.1
Cystatin C 2012 (age and sex)	1162, 40.4	1295, 45.0	395, 13.7	22, 0.8	3, 0.1	420, 14.6
Creatinine-cystatin C 2012 (age, sex, and race)	1271, 44.2	1340, 46.6	248, 8.6	15, 0.5	3, 0.1	276, 9.2
Average of creatinine 2009 and cystatin C 2012	1253, 43.6	1371, 47.7	238, 8.3	12, 0.4	3, 0.1	253, 8.8
Spline Log cystatin C	1384, 48.1	1184, 41.2	289, 10.1	18, 0.6	2, 0.1	309, 10.8
Spline Log cystatin C—age, sex, and race	1125, 39.1	1317, 45.8	410, 14.3	22, 0.8	3, 0.1	435, 15.2
Spline Log cystatin C—age, sex, and diabetes	1249, 43.4	1271, 44.2	338, 11.8	17, 0.6	2, 0.1	357, 12.5
Spline Log cystatin C—age, sex, and weight	1072, 37.3	1341, 46.6	438, 15.2	23, 0.8	3, 0.1	464, 16.1

∗Distribution reported as frequency count, 𝑛; percentage, %.