Table 3.

Statistical analyses of age and vas between groups 1 and 2

	Group (n)	mean	Std. Deviation	t-test value	p- value
Age	1.00 (90)	8.0000	2.59645	−0.249	0.804 p  > 0.05
	2.00 (97)	7.9072	2.49617
vas1	1.00 (90)	1.5000	2.63618	4.400	0.0001 p  < 0.05
	2.00 (97)	3.5258	3.55344
vas2	1.00 (90)	1.4444	2.63985	5.341	0.0001 p  < 0.05
	2.00 (97)	3.8969	3.53696
vas3	1.00 (90)	0.2333	0.98357	2.767	0.006 p  < 0.05
	2.00 (97)	0.9072	2.10695
vas4	1.00 (90)	0.1444	0.78699	1.084	0.280 p > 0.05
	2.00 (97)	0.3093	1.22781
vas5	1.00 (90)	0.5889	1.85360	3.525	0.273 p > 0.05
	2.00 (97)	1.9588	3.22722
vas6	1.00 (90)	0.4778	1.55229	3.719	0.001 p  < 0.05
	2.00 (97)	1.7526	2.88686

vas1: vas score of snoring, vas2: vas score of mouth breathing while sleeping, vas3: vas score of sleep apnea, vas4: vas score of daytime sleepiness, vas5: vas score of restless sleep, and vas6: vas score of poor school performance