[Retracted] Virtual Reality Technology Combined with Comprehensive Pulmonary Rehabilitation on Patients with Stable Chronic Obstructive Pulmonary Disease

Table 3

Comparison of lung function between the two groups before intervention.

Grouping	N	Social security	Agricultural insurance	No medical insurance	x^2	P
Test group	30	20 (66.67%)	7 (23.33%)	3 (10.00%)	0.74	0.690
Control group	30	23 (76.67%)	5 (16.67%)	2 (6.67%)
Total	60	43 (71.67%)	12 (20.00%)	5 (8.33%)