Table 1.

Differences between COPD patients and controls

Characteristics	COPD patients (n=47)	Control subjects (n=41)	P-value
Age (years)	61.5±8.7	59.7±9.7	0.4
	Range: 40–75	Range: 43–79
Gender (female/male)	4/43	3/38	0.9
BMI (kg/m2)	25.0±2.9	26.0±1.9	0.06
Smoking history (pack years)	36.3±17.2	30.0±20.1	0.09
Comorbidities (%) (hypertension and/or diabetes)	25.5	19.5	0.6
Endocan level (pg/mL)	860.1±259.9	647.3±316.9	0.001

Abbreviations: BMI, body mass index; Endocan, endothelial cell specific molecule-1.