TABLE 1

Baseline demographics, pulmonary function and airway wall thickness and emphysema

Age years59.8±5.3
Height cm178±6.3
Pack-years42.0±19.9
Current smoker1113 (55.1)
FEV1 L3.64±0.37
FEV1 standardised residuals−0.41±1.16
FEV1/FVC z-score < −1.645408 (20.2)
FEV1/FVC <70%697 (34.5)
GOLD status
 No COPD1488 (67.3)
 GOLD I466 (21.1)
 GOLD II222 (10)
 GOLD III35 (1.5)
Pi10 mm2.42±0.59
Perc15 Hounsfield Units−934.8±30.1
  • Data are presented as mean±sd or n (%). FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity; GOLD: Global Initiative for Chronic Obstructive Lung Disease; COPD: chronic obstructive pulmonary disease; Pi10: square root of wall area of a 10-mm lumen perimeter; Perc15: 15th percentile method.