[Retracted] Analyzing the Treatment of Patients with Acute Exacerbation of COPD with the Aid of Intelligent Diagnosis Method

Table 8

Within-group comparison of blood gas analysis before and after treatment in the three groups (x ± s).

Item	Group	Before treatment	After treatment	t
PO2	The control group	64.90 ± 6.88	70.27 ± 6.48	−12.969	0.000
	The TCM group	66.43 ± 7.85	76.07 ± 8.29	−17.028	0.000
	The combined group	66.00 ± 6.11	81.76 ± 7.32	−20.581	0.000
PCO2	The control group	49.63 ± 5.58	46.90 ± 5.20	6.223	0.000
	The TCM group	49.50 ± 5.12	43.07 ± 5.56	16.213	0.000
	The combined group	48.55 ± 6.88	39.55 ± 3.69	10.432	0.000

Note: consistent with a normal distribution, using the t-test.