TABLE 1

Anthropometric characteristics of the entire cohort and the healthy subgroup reporting no respiratory symptoms (HealthyAsymp)

Entire cohort#HealthyAsym
Subjects1145577
Age, years61.3±12.460.6±12.5
Male/female570/575244/333
Height, m1.68±0.091.67±0.09
Smoking, pack-years0.0 (0.0–12.0)0 (0.0–0.75)
BMI, kg·m−227.8±4.626.8±4.0
FEV1, Z-score−0.24±1.030.1±0.9
FEV1/FVC, Z-score−0.46±0.96−0.3±0.8
Rrs6, cmH2O·s·L−13.29 (2.65–4.15)3.10 (2.53, 3.78)
Xrs6, cmH2O·s·L−1−0.45 (−0.83–  −0.22)−0.39 (−0.66– −0.18)
EFLi, cmH2O·s·L−1−0.12 (−0.27–0.89)−0.15 (−0.27– −0.02)

Data are presented as mean±sd or median (interquartile range), unless otherwise stated. BMI: body mass index; FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity; Rrs6: resistance of the respiratory system measured at 6 Hz; Xrs6: reactance of the respiratory system measured at 6 Hz; EFLi: expiratory flow limitation index. #: includes HealthyAsym subjects.