Table 3.

Comparison of clinical cough score between the two groups

Clinical cough score	Pre-treatment		t	P value	Post-treatment		t	P value
	Observation group (n = 65)	Control group (n = 65)			Observation group (n = 65)	Control group (n = 65)
Cough score	2.06 ± 1.22	2.26 ± 1.63	1.067	0.287	0.56 ± 0.54a	0.97 ± 0.47	3.785	0.001
Nighttime coughs	3.16 ± 2.01	3.28 ± 1.06	1.892	0.092	1.03 ± 0.25a	2.89 ± 0.98	7.894	0.012

^a P < 0.05 vs before treatment.