Impact of Misclassification of Obesity by Body Mass Index on Mortality in Patients With CKD

INTRODUCTION: or BF% >25% for men and >35% for women) and the impact on all-cause mortality in CKD. METHODS: A total of 326 patients with non-dialysis-dependent CKD were prospectively followed for a median of 4.9 years (range 2.9-5.3). BF% and lean body mass were determined using the Body Composition Monitor, a novel multifrequency bioimpedance spectroscopy device. Covariates included age, gender, diabetes, cardiovascular disease, estimated glomerular filtration rate, proteinuria, and high-sensitivity C-reactive protein. RESULTS: = 0.012). CONCLUSION: Diagnostic discordance between BMI and BF% may partly explain the obesity paradox. Proper diagnosis of obesity in patients with CKD is required for both risk prediction and treatment.