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Statistical analyses (Kruskal–Wallis or One-Way ANOVA) for intraindividual variability of sleep parameters
| Fixed effect | Df | F-value | P-value | |
|---|---|---|---|---|
| Sleep Onset (Kruskal–Wallis) |
Year | 2 | 1.87 | 0.166 |
| Sleep Offset (Kruskal–Wallis) |
Year | 2 | 0.972 | 0.386 |
| Midsleep (Kruskal–Wallis) |
Year | 2 | 2.034 | 0.142 |
| Duration (ANOVA) |
Year | 2 | 1.15 | 0.326 |
