[Retracted] Nursing Research on Patients with Chronic Obstructive Pulmonary Disease and Respiratory Failure Based on Big Data

Table 3

Comparison of life quality before and after the intervention.

Item	Intervention	CG	EG	t
FEV1/FVC	Before	64.55 ± 7.08	65.42 ± 6.26	−0.43	0.72
	After	55.99 ± 16.87	45.48 ± 18.12	2.53	0.017