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Title: Performance of four creatinine-based equations in assessing glomerular filtration rate in adults with diabetes.
Austin Authors: Zafari, Neda;Lotfaliany, Mojtaba;O'Keefe, Graeme J;Kishore, Kartik ;Torkamani, Niloufar ;MacIsaac, Richard J;Churilov, Leonid ;Ekinci, Elif I 
Affiliation: Deakin University, The Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Geelong, Victoria, Australia
Molecular Imaging and Therapy
Melbourne Medical School, University of Melbourne, Austin Health, Melbourne, Victoria, Australia
Data Analytics Research and Evaluation (DARE) Centre
Department of Endocrinology & Diabetes, University of Melbourne, St Vincent's Hospital Melbourne, Victoria, Australia
Issue Date: Jan-2021 2020-10
Publication information: The Journal of Clinical Endocrinology and Metabolism 2021; 106(1): e61-e73
Abstract: To evaluate diagnostic performance of glomerular filtration rate (GFR) estimated by modification of diet in renal disease (MDRD), chronic kidney disease epidemiology collaboration (CKD-EPI), full age spectrum (FAS), and revised Lund-Malmo (r-LM) equations in adults with diabetes. Individuals were included in this cross-sectional study if they had at least one measurement of technetium-99m diethylenetriamine-pentaacetic acid ( 99mTc-DTPA) GFR (mGFR) and serum creatinine (1487 patients with 2703 measures). GFR calculated by estimation equations was compared with mGFR. Diagnostic performance was assessed using concordance correlation coefficient (CCC), bias, precision, accuracy, reduced major axis regression (RMAR), and Bland-Altman plot. Analysis was repeated in subgroups based on sex, diabetes type, HbA1c, and GFR level. Of all patients, 1189 (86%) had type2 diabetes. Mean mGFR, MDRD, CKD-EPI, FAS and revised Lund-Malmo eGFR were 66, 72, 74, 71, and 67 ml/min/1.73m 2, respectively. Overall, the r-LM had the highest CCC (=0.83), lowest bias (-1.4ml/min/1.73m 2), highest precision (16.2 ml/min/1.73m 2), and highest accuracy (P10=39%). The RMAR (slope, intercept) in r-LM, FAS, MDRD and CKD-EPI was 1.18, -13.35; 0.97, -2.9; 1, -6.4, and 1.04, -11.3, respectively. The Bland-Altman plot showed that r-LM had the lowest mean difference and the narrowest 95% limit of agreement (-1.0, 54.1 ml/min/1.73m 2), while mean difference was more than 5-folds higher in FAS, MDRD, and CKD-EPI (-5.2, -6.3, and -8.2, respectively). In adults with diabetes the revised Lund-Malmo performs better than MDRD, CKD-EPI and FAS in calculating point estimates of GFR.
DOI: 10.1210/clinem/dgaa722
PubMed URL: 33090207
Type: Journal Article
Subjects: CKD-EPI equation
Diabetic kidney disease
Diagnostic performance
Estimated GFR
Measure GFR
Revised Lund-Malmo equation
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