Demographics for the three different groups

Age years68±260±571±3
Females9 (50)5 (56)2 (33)
BMI kg·m−227±1.527±2.427±2.4
Smoking14 (78)3 (33)4 (67)
COPD2 (11)02 (33)
VT L3.42±0.183.86±0.253.20±0.37
VT %85±584±379±8
FEV1 L2.45±0.162.15±0.182.18±0.27
FEV1 %86±574±474±8
DLCO %84±480±672±5

Data are presented as mean±sem or n (%). MV-NSCLC: mechanical ventilation in nonsmall cell lung cancer patients; MV-C: mechanical ventilation in control patients; NB: normal breathing patients; BMI: body mass index; VT: tidal volume; FEV1: forced expiratory volume in 1 s; DLCO: diffusing capacity of the lung for carbon monoxide.