[Retracted] Efficacy of Xiyanping in the Treatment of Elderly Patients with Chronic Obstructive Pulmonary Disease and Its Effect on the Expression of GDF-15 and HIF-1α in Serum

Table 3

Differences in serum-related factors such as GDF-15 and HIF-1α between them ().

Group		GDF-15 (μg/L)		HIF-1α (ng/L)		CXCL12 (ng/L)
		Before	After	Before	After	Before	After
Control group	43
Observation group	43
		0.534	6.190	0.313	5.610	0.520	5.763
		0.595	<0.001	0.755	<0.001	0.605	<0.001
Group		TNF-α (μg/L)		IL-8 (μg/L)		TGF-β (ng/mL)
		Before	After	Before	After	Before	After
Control group	43
Observation group	43
		0.701	6.414	0.428	7.573	0.482	3.055
		0.485	<0.001	0.670	<0.001	0.631	0.003

Compared with before treatment, .