Table 1—

Baseline characteristics of the patients

Subjects n294
Sex M/F285/9
Age yrs66 (51–79)
Current smokers %18
BMI kg·m-227 (19–36)
6MWD m388 (160–600)
FEV1 L1.13 (0.64–2.22)
FEV1 % pred39 (20–70)
GOLD and ATS/ERS staging
Stage I4 (1)
Stage II81 (28)
Stage III136 (46)
Stage IV73 (25)
IC/TLC0.28 (0.16–0.42)
Charlson index4 (1–7)
  • Data are presented as n, median (5th–95th percentile) or n (%), unless otherwise stated. M: male; F: female; BMI: body mass index; 6MWD: 6-min walking distance; FEV1: forced expiratory volume in one second; % pred: % predicted; GOLD: Global Initiative for Chronic Obstructive Lung Disease; ATS: American Thoracic Society; ERS: European Respiratory Society; IC: inspiratory capacity; TLC: total lung capacity.