Agreement of the vector analysis of four types of bioelectrical impedance technology and agreement of fat and fat-free mass estimates with the dual-energy X-ray absorptiometry values in hemodialysis patients.

This study aimed to identify the degree of agreement between the BIVA of four different BIA measurement techniques, as well as to evaluate the degree of agreement between their estimates of fat free mass (FFM) and fat mass (FM) compared to the gold-standard method of dual-energy X-ray absorptiometry (DEXA) in a subgroup of patients without volume overload.