Table 4.

Comparison of St. George’s Respiratory Questionnaire scores between the two groups (mean ± SD, point)

Time	Group	n	Symptom score	Impact score	Mobility score	Total score
Pre-intervention	Observation group	50	67.23 ± 11.98	60.27 ± 12.34	34.98 ± 9.16	54.16 ± 9.47
	Control group	50	65.78 ± 10.08	59.74 ± 11.36	32.84 ± 8.97	52.79 ± 8.74
	t value		0.655	0.223	1.180	0.752
	P value		0.514	0.824	0.241	0.454
Post-intervention	Observation group	50	46.54 ± 8.04	43.74 ± 9.68	24.67 ± 5.07	38.32 ± 7.52
	Control group	50	56.51 ± 9.54	54.40 ± 7.76	29.27 ± 6.82	46.73 ± 8.18
	t value		-5.651	-6.076	-3.828	-5.352
	P value		<0.001	<0.001	0.001	<0.001