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.