Table 2.

Patient characteristics

Parameter	GOLD I/II	GOLD III/IV	P value
N	19	12
Sex, female/male	2/17	3/9
Age, yr	67.32 ± 9.9	68.25 ± 6.5	ns
Height, m	1.732 ± 0.079	1.686 ± 0.118	ns
Weight, kg	84.99 ± 18.80	72.72 ± 19.92	ns
FEV1	1.91 ± 0.65	0.872 ± 0.35	<0.0001
FEV1, %predicted	65.67 ± 15.93	32.263 ± 12.38	<0.0001
FEV1/FVC	0.685 ± 0.097	0.422 ± 0.0103	<0.0001

Values are means ± SD. ns, not significant; GOLD, Global Initiative for Chronic Obstructive Lung Disease.