Table 1

 Characteristics of study patients

COPD(n = 23)Controls(n = 11)
FEV1, forced expiratory volume in 1 second; VC, vital capacity; WBC, white blood cells; CRP, C reactive protein; BMI, body mass index.
Data shown are mean (SD) values except for *median (range).
Age (years)64.0 (2.3)34.8 (2.6)
Sex (M/F)14/94/7
FEV1 (% predicted)51.7 (3.8)100.9 (2.5)
VC (% predicted)85.3 (4.2)100.7 (1.9)
WBC (×105/l)9.0 (1.3)6.1 (0.3)
CRP* (mg/l)10 (7–16)<5 (<5–7)
BMI (kg/m2)25.3 (0.7)22.6 (0.6)
Pack years40.0 (4.1)
Current smokers11