1. Bland–Altman plots of in vitro functional residual capacity (FRC) measurements on each device.
Bland–Altman plots of in vitro functional residual capacity (FRC) measurements on each device. Data are plotted as measured FRC minus lung model FRC, expressed as the absolute difference versus mean of measured and lung model FRC values. Absolute differences (circles), mean difference and upper and lower limits of agreement (mean difference±sd of differences) are shown as dashed lines. a) Woolcock in-house device; b) Exhalyzer D device; c) EasyOne Pro LAB device analysed in Version
Katrina O. Tonga et al. ERJ Open Res 2017;3:
©2017 by European Respiratory Society