Fig. 7.

Comparison between patients with lung cancer and other intra-thoracic tumors, box plots represents the interquartile range with the median, and the whiskers represent the range for each setting a) end-expiratory lung impedance as a an estimate of end-expiratory lung volume, relative to baseline (indicated by the dotted line) b) tidal impedance variation as an estimate of tidal volume, relative to baseline (indicated by the dotted line) c) variability of tidal impedance variation as an estimate of tidal volume variability d) variability of respiratory rate as a measure of breathing frequency variability. Significant difference on the Mann-Whitney U test is indicated with the p value. Remark: the results of patient 4 were not included in this figure due to missing data at baseline.