Comparative performance of the CKD Epidemiology Collaboration (CKD-EPI) and the Modification of Diet in Renal Disease (MDRD) Study equations for estimating GFR levels above 60 mL/min/1.73 m 2

Lesley A. Stevens, Christopher H. Schmid, Tom Greene, Yaping Zhang, Gerald J. Beck, Marc Froissart, Lee L. Hamm, Julia B. Lewis, Michael Mauer, Gerjan J. Navis, Michael W Steffes, Paul W. Eggers, Josef Coresh, Andrew S. Levey

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Abstract

Background: The Modification of Diet in Renal Disease (MDRD) Study equation underestimates measured glomerular filtration rate (GFR) at levels >60 mL/min/1.73 m 2 , with variable accuracy among subgroups; consequently, estimated GFR (eGFR) ≥60 mL/min/1.73 m 2 is not reported by clinical laboratories. Here, performance of a more accurate GFR-estimating equation, the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation, is reported by level of GFR and clinical characteristics. Study Design: Test of diagnostic accuracy. Setting & Participants: Pooled data set of 3,896 people from 16 studies with measured GFR (not used for the development of either equation). Subgroups were defined by eGFR, age, sex, race, diabetes, prior solid-organ transplant, and body mass index. Index Tests: eGFR from the CKD-EPI and MDRD Study equations and standardized serum creatinine. Reference Test: Measured GFR using urinary or plasma clearance of exogenous filtration markers. Results: Mean measured GFR was 68 ± 36 (SD) mL/min/1.73 m 2 . For eGFR <30 mL/min/1.73 m 2 , both equations have similar bias (median difference compared with measured GFR). For eGFR of 30-59 mL/min/1.73 m 2 , bias was decreased from 4.9 to 2.1 mL/min/1.73 m 2 (57% improvement). For eGFR of 60-89 mL/min/1.73 m 2 , bias was decreased from 11.9 to 4.2 mL/min/1.73 m 2 (61% improvement). For eGFR of 90-119 mL/min/1.73 m 2 , bias was decreased from 10.0 to 1.9 mL/min/1.73 m 2 (75% improvement). Similar or improved performance was noted for most subgroups with eGFR <90 mL/min/1.73 m 2 , other than body mass index <20 kg/m 2 , with greater variation noted for some subgroups with eGFR ≥90 mL/min/1.73 m 2 . Limitations: Limited number of elderly people and racial and ethnic minorities with measured GFR. Conclusions: The CKD-EPI equation is more accurate than the MDRD Study equation overall and across most subgroups. In contrast to the MDRD Study equation, eGFR ≥60 mL/min/1.73 m 2 can be reported using the CKD-EPI equation.

Original languageEnglish (US)
Pages (from-to)486-495
Number of pages10
JournalAmerican Journal of Kidney Diseases
Volume56
Issue number3
DOIs
StatePublished - Sep 1 2010

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Diet Therapy
Glomerular Filtration Rate
Epidemiology
Kidney
Body Mass Index
Chronic Renal Insufficiency
Routine Diagnostic Tests
Creatinine
Transplants

Keywords

  • Estimating equations
  • glomerular filtration rate
  • performance

Cite this

Comparative performance of the CKD Epidemiology Collaboration (CKD-EPI) and the Modification of Diet in Renal Disease (MDRD) Study equations for estimating GFR levels above 60 mL/min/1.73 m 2 . / Stevens, Lesley A.; Schmid, Christopher H.; Greene, Tom; Zhang, Yaping; Beck, Gerald J.; Froissart, Marc; Hamm, Lee L.; Lewis, Julia B.; Mauer, Michael; Navis, Gerjan J.; Steffes, Michael W; Eggers, Paul W.; Coresh, Josef; Levey, Andrew S.

In: American Journal of Kidney Diseases, Vol. 56, No. 3, 01.09.2010, p. 486-495.

Research output: Contribution to journalArticle

Stevens, Lesley A. ; Schmid, Christopher H. ; Greene, Tom ; Zhang, Yaping ; Beck, Gerald J. ; Froissart, Marc ; Hamm, Lee L. ; Lewis, Julia B. ; Mauer, Michael ; Navis, Gerjan J. ; Steffes, Michael W ; Eggers, Paul W. ; Coresh, Josef ; Levey, Andrew S. / Comparative performance of the CKD Epidemiology Collaboration (CKD-EPI) and the Modification of Diet in Renal Disease (MDRD) Study equations for estimating GFR levels above 60 mL/min/1.73 m 2 In: American Journal of Kidney Diseases. 2010 ; Vol. 56, No. 3. pp. 486-495.
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abstract = "Background: The Modification of Diet in Renal Disease (MDRD) Study equation underestimates measured glomerular filtration rate (GFR) at levels >60 mL/min/1.73 m 2 , with variable accuracy among subgroups; consequently, estimated GFR (eGFR) ≥60 mL/min/1.73 m 2 is not reported by clinical laboratories. Here, performance of a more accurate GFR-estimating equation, the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation, is reported by level of GFR and clinical characteristics. Study Design: Test of diagnostic accuracy. Setting & Participants: Pooled data set of 3,896 people from 16 studies with measured GFR (not used for the development of either equation). Subgroups were defined by eGFR, age, sex, race, diabetes, prior solid-organ transplant, and body mass index. Index Tests: eGFR from the CKD-EPI and MDRD Study equations and standardized serum creatinine. Reference Test: Measured GFR using urinary or plasma clearance of exogenous filtration markers. Results: Mean measured GFR was 68 ± 36 (SD) mL/min/1.73 m 2 . For eGFR <30 mL/min/1.73 m 2 , both equations have similar bias (median difference compared with measured GFR). For eGFR of 30-59 mL/min/1.73 m 2 , bias was decreased from 4.9 to 2.1 mL/min/1.73 m 2 (57{\%} improvement). For eGFR of 60-89 mL/min/1.73 m 2 , bias was decreased from 11.9 to 4.2 mL/min/1.73 m 2 (61{\%} improvement). For eGFR of 90-119 mL/min/1.73 m 2 , bias was decreased from 10.0 to 1.9 mL/min/1.73 m 2 (75{\%} improvement). Similar or improved performance was noted for most subgroups with eGFR <90 mL/min/1.73 m 2 , other than body mass index <20 kg/m 2 , with greater variation noted for some subgroups with eGFR ≥90 mL/min/1.73 m 2 . Limitations: Limited number of elderly people and racial and ethnic minorities with measured GFR. Conclusions: The CKD-EPI equation is more accurate than the MDRD Study equation overall and across most subgroups. In contrast to the MDRD Study equation, eGFR ≥60 mL/min/1.73 m 2 can be reported using the CKD-EPI equation.",
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T1 - Comparative performance of the CKD Epidemiology Collaboration (CKD-EPI) and the Modification of Diet in Renal Disease (MDRD) Study equations for estimating GFR levels above 60 mL/min/1.73 m 2

AU - Stevens, Lesley A.

AU - Schmid, Christopher H.

AU - Greene, Tom

AU - Zhang, Yaping

AU - Beck, Gerald J.

AU - Froissart, Marc

AU - Hamm, Lee L.

AU - Lewis, Julia B.

AU - Mauer, Michael

AU - Navis, Gerjan J.

AU - Steffes, Michael W

AU - Eggers, Paul W.

AU - Coresh, Josef

AU - Levey, Andrew S.

PY - 2010/9/1

Y1 - 2010/9/1

N2 - Background: The Modification of Diet in Renal Disease (MDRD) Study equation underestimates measured glomerular filtration rate (GFR) at levels >60 mL/min/1.73 m 2 , with variable accuracy among subgroups; consequently, estimated GFR (eGFR) ≥60 mL/min/1.73 m 2 is not reported by clinical laboratories. Here, performance of a more accurate GFR-estimating equation, the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation, is reported by level of GFR and clinical characteristics. Study Design: Test of diagnostic accuracy. Setting & Participants: Pooled data set of 3,896 people from 16 studies with measured GFR (not used for the development of either equation). Subgroups were defined by eGFR, age, sex, race, diabetes, prior solid-organ transplant, and body mass index. Index Tests: eGFR from the CKD-EPI and MDRD Study equations and standardized serum creatinine. Reference Test: Measured GFR using urinary or plasma clearance of exogenous filtration markers. Results: Mean measured GFR was 68 ± 36 (SD) mL/min/1.73 m 2 . For eGFR <30 mL/min/1.73 m 2 , both equations have similar bias (median difference compared with measured GFR). For eGFR of 30-59 mL/min/1.73 m 2 , bias was decreased from 4.9 to 2.1 mL/min/1.73 m 2 (57% improvement). For eGFR of 60-89 mL/min/1.73 m 2 , bias was decreased from 11.9 to 4.2 mL/min/1.73 m 2 (61% improvement). For eGFR of 90-119 mL/min/1.73 m 2 , bias was decreased from 10.0 to 1.9 mL/min/1.73 m 2 (75% improvement). Similar or improved performance was noted for most subgroups with eGFR <90 mL/min/1.73 m 2 , other than body mass index <20 kg/m 2 , with greater variation noted for some subgroups with eGFR ≥90 mL/min/1.73 m 2 . Limitations: Limited number of elderly people and racial and ethnic minorities with measured GFR. Conclusions: The CKD-EPI equation is more accurate than the MDRD Study equation overall and across most subgroups. In contrast to the MDRD Study equation, eGFR ≥60 mL/min/1.73 m 2 can be reported using the CKD-EPI equation.

AB - Background: The Modification of Diet in Renal Disease (MDRD) Study equation underestimates measured glomerular filtration rate (GFR) at levels >60 mL/min/1.73 m 2 , with variable accuracy among subgroups; consequently, estimated GFR (eGFR) ≥60 mL/min/1.73 m 2 is not reported by clinical laboratories. Here, performance of a more accurate GFR-estimating equation, the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation, is reported by level of GFR and clinical characteristics. Study Design: Test of diagnostic accuracy. Setting & Participants: Pooled data set of 3,896 people from 16 studies with measured GFR (not used for the development of either equation). Subgroups were defined by eGFR, age, sex, race, diabetes, prior solid-organ transplant, and body mass index. Index Tests: eGFR from the CKD-EPI and MDRD Study equations and standardized serum creatinine. Reference Test: Measured GFR using urinary or plasma clearance of exogenous filtration markers. Results: Mean measured GFR was 68 ± 36 (SD) mL/min/1.73 m 2 . For eGFR <30 mL/min/1.73 m 2 , both equations have similar bias (median difference compared with measured GFR). For eGFR of 30-59 mL/min/1.73 m 2 , bias was decreased from 4.9 to 2.1 mL/min/1.73 m 2 (57% improvement). For eGFR of 60-89 mL/min/1.73 m 2 , bias was decreased from 11.9 to 4.2 mL/min/1.73 m 2 (61% improvement). For eGFR of 90-119 mL/min/1.73 m 2 , bias was decreased from 10.0 to 1.9 mL/min/1.73 m 2 (75% improvement). Similar or improved performance was noted for most subgroups with eGFR <90 mL/min/1.73 m 2 , other than body mass index <20 kg/m 2 , with greater variation noted for some subgroups with eGFR ≥90 mL/min/1.73 m 2 . Limitations: Limited number of elderly people and racial and ethnic minorities with measured GFR. Conclusions: The CKD-EPI equation is more accurate than the MDRD Study equation overall and across most subgroups. In contrast to the MDRD Study equation, eGFR ≥60 mL/min/1.73 m 2 can be reported using the CKD-EPI equation.

KW - Estimating equations

KW - glomerular filtration rate

KW - performance

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