Figure 3 –

Comparison of FM change intervals between DXA and BIS measured in the first year following RYGB. (A) mean changes in FM by each method for each change interval. Bland-Altman analyses for the change in FM from (B) baseline to 6 months, (C) baseline to 1 year, and (D) 6 months to 1 year after surgery. Abbreviations: DXA, dual energy X-ray absorptiometry; BIS, bioimpedance spectroscopy; RYGB, Roux-en-Y gastric bypass; FM, fat mass; FM_chamney FM calculated from the Chamney model using BIS-generated BMI-adjusted ECW_Moissl and ICW_Moissl.