Table 1.

Clinical Characteristics of the Recruited Subjects

Clinicopathologic Features	Non-Smoker	Smoker	COPD
Number	16	16	16
Age (years)	58.6±7.1	61.5±6.9	62.4±5.7
Gender (female/male)	6/10	1/15	2/14
BMI (kg/m2)	27.1 ± 5.8	27.7± 6.1	26.9± 6.7
Smoking history (years)	No	15.9±3.8	26.3±9.2
FEV1% (predicted)	83.69 ± 1.54	69.99 ± 1.48	59.28 ± 1.17