Color Distribution Differences in the Tongue in Sleep Disorder

Table 2

Results of the normality test of the color histogram variables in the normal and sleep disorder groups.

Group	Kolmogorov-Smirnov			Shapiro-Wilk
	Statistic	d.f	𝑃 value	Statistic	d.f	𝑃 value
V1
Normal	0.104	402	0.000	0.901	402	0.000
SD	0.089	52	0.200*	0.979	52	0.476
V2
Normal	0.208	402	0.000	0.691	402	0.000
SD	0.141	52	0.011	0.905	52	0.001
V3
Normal	0.103	402	0.000	0.924	402	0.000
SD	0.186	52	0.000	0.921	52	0.002
V4
Normal	0.115	402	0.000	0.926	402	0.000
SD	0.139	52	0.013	0.923	52	0.002
V5
Normal	0.044	402	0.059	0.978	402	0.000
SD	0.143	52	0.010	0.885	52	0.000
V6
Normal	0.037	402	0.200*	0.992	402	0.038
SD	0.080	52	0.200*	0.977	52	0.395
V7
Normal	0.113	402	0.000	0.916	402	0.000
SD	0.221	52	0.000	0.816	52	0.000

V1–V7: color histogram variables, SD: sleep disorder, and d.f: degrees of freedom, *a lower bound of the true significance in Lilliefors significance correction.