Non-uniform agreement between EVA and iSense scanners.

Bland-Altman plots illustrating the relative differences (%) in the circumferences as measured with iSense scanner vs EVA scanner compared to average circumferences (mm) of the two methods. The black solid line represents the non-uniform mean bias of the differences with the grey shaded area being the 95% confidence interval of the bias, red dashed lines are the high and low limits of agreement surrounded by red shaded areas as 95% confidence interval. The legend indicates the equation of the non-uniform bias.