Bland–Altman plots comparing body composition by BIS and MFBIA compared with DXA and DLW in overweight and obese lactating women at baseline, measurement A, n=49–68. Horizontal dotted line=mean difference (kg). Limits of agreement correspond to±2 s.d. Regression line=difference between reference method minus bioimpedance method as dependent variable, and mean of reference method minus bioimpedance method as independent variable, with rPearson and P-values inserted. (a and b) Differences in FM by BIS and MFBIA compared with DXA. (c) Differences in SMM by BIS compared with DXA. (d and e) Differences in TBW by BIS and MFBIA compared with DLW. (f) Differences in TBW by DXA calculated as FFM*0.73 compared with DLW. BIS (Xitron 4200); MFBIA (Tanita MC-180 MA III).