Fig. 2.

End-expiratory lung impedance as an estimate of end-expiratory lung volume, relative to baseline (indicated by the dotted line) a) box plots represents the interquartile range with the median, and the whiskers represent the range for each setting b) individual levels of end-expiratory lung impedance per setting. This figures shows whether a specific CPAP/BiPAP setting decreases (<1) or increases (>1) estimated end-expiratory lung volume in comparison with baseline and enables comparison of the estimated end-expiratory lung volume between CPAP/BiPAP setting. Significant differences on the post-hoc analysis are indicated with their respective p-value.