Characteristics of the subjects undergoing bronchial brushings

Control nonsmokerCOPD stage II#
Subjects n65
Female %170
Age years61 (49–73)66 (64–69)
Smoking statusNonsmokerCurrent
FEV1 % predicted113 (89–129)65 (49–79)
  • Data are presented as median (range), unless otherwise stated. COPD: chronic obstructive pulmonary disease; FEV1: forced expiratory volume in 1 s. #: COPD patients were included based on the Global Initiative for Chronic Obstructive Lung Disease standard [1]; : ≥10 pack-years.