To the Editor: In their study of prognostic
factors for new-onset kidney disease in community-dwelling individuals, Dr
Fox and colleagues1 used the Modification
of Diet in Renal Disease (MDRD) Study formula to estimate the glomerular filtration
rate (GFR). However, this formula does not appear among the 7 equations for
estimation of GFR in a reference that the authors cited.2
Corsonello A, Pedone C, Incalzi RA, Gemelli PA. Methods for Estimating Glomerular Filtration Rate. JAMA. 2004;291(23):2819–2820. doi:10.1001/jama.291.23.2819-c
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