Skip to main content
. Author manuscript; available in PMC: 2012 Mar 1.
Published in final edited form as: Am J Kidney Dis. 2011 Mar;57(3 Suppl 2):S17–S23. doi: 10.1053/j.ajkd.2010.11.008

Table 3.

Reclassification of Participants Unaware and Aware of CKD Using the CKD-EPI and MDRD Study Equations

CKD by MDRD Study Equation CKD-EPI Equation Number Reclassified
No CKD Stage 1-2 Stage 3 Stage 4 Stage 5 More Advanced Less Advanced
Unaware, n = 23,733
    CKD Stage 1-2 0 7601 65 0 0 65 0
    CKD Stage 3 2509 322 12,600 88 0 88 2831
    CKD Stage 4 0 0 30 460 5 5 30
    CKD Stage 5 0 0 0 2 51 - 2
    Total No. Reclassified 158 2863
Aware, n = 2480
    CKD Stage 1-2 0 463 5 0 0 5 0
    CKD Stage 3 132 35 1390 21 0 21 167
    CKD Stage 4 0 0 17 331 9 9 17
    CKD Stage 5 0 0 0 4 73 - 4
    Total No. reclassified 35 188

Note: CKD stages are defined as follows: Stage 1, eGFR ≥ 90 mL/min/1.73 m2 with ACR ≥ 30 mg/g; Stage 2, eGFR 60-89 mL/min/1.73 m2 with ≥ ACR 30 mg/g; Stage 3, eGFR 30-59 mL/min/1.73 m2; Stages 4-5, eGFR < 30 mL/min/1.73 m2.

ACR, albumin-creatinine ratio; CKD, chronic kidney disease; CKD-EPI, Chronic Kidney Disease Epidemiology Collaboration; eGFR, estimated glomerular filtration rate; MDRD, Modification of Diet in Renal Disease.