Table 1.

Demographic and disease data (randomized patients)

Characteristic	Category	All patients
Gender	Male	22
	Female	6
Age (years)	Mean	61.4
	Range	43–79
BMI (kg m−2)	Mean	26.4
	Range	19–43
Smoking status	Never	1
	Previously	17
	Occasional	1
	Habitual	9
Pack-years	Median	40
	Range	0–80
FEV1 (l)	Mean	2.692
	Range	1.46–5.1
FEV1 (% predicted)	Mean	89.1
	Range	55–130

BMI, body mass index; FEV₁, forced expiratory volume in 1 s.