Color Distribution Differences in the Tongue in Sleep Disorder

Table 3

Color histogram variables in the normal and sleep disorder groups.

Variables	Normal (𝑛=402)	SD (𝑛=52)	𝑃 value
V1	^†0.048 (0.033)	0.048 (0.038)	0.798
V2	0.042 (0.047)	0.062 (0.092)	0.048*
V3	0.130 (0.094)	0.127 (0.103)	0.577
V4	0.080 (0.097)	0.136 (0.168)	0.002*
V5	0.130 (0.104)	0.075 (0.088)	0.000*
V6	0.211 (0.088)	0.185 (0.122)	0.061
V7	0.082 (0.122)	0.038 (0.116)	0.008*

SD: sleep disorder, ^†median (interquartile range); 𝑃 values for variables were derived from the Mann-Whitney 𝑈 test (*𝑃<0.05).