Table 1.

Study subjects and characteristics

Characteristics	Controls		COPD
Number of subjects	8		7
Age (range)	60	(43–70)	62	(53–66)
Pack years (range)	20	(12–48)	41	(14–47)
Gender, M/F in %	50/50		58/42
FEV1% predicted	98	(89–132)	61	(41–70)

Data in the Table are median values, with range given in parentheses. FEV1; % predicted = forced expiratory volume in 1 s expressed as a percentage of the predicted value. COPD patients were on maintenance treatment with inhaled glucocorticosteroids and long-acting β-agonist treatment, Symbicort®.