[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 7

Differences in CAT scores and Borg scores between the two groups ((), fraction).

Group		CAT score		Borg score
		Before	After	Before	After
Control group	43
Observation group	43
		0.398	5.830	0.177	4.487
		0.692	<0.001	0.860	<0.001

Compared with before treatment, .