Although our study did not specifically recruit patients with daytime sleepiness and fatigue, we also showed a trend toward improvement on the ESS (−1.5, p = 0.054).
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A double-blind, controlled trial of circadian effective light therapy in patients with Parkinson's disease.
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The sentences
The study did not meet statistical significance for the primary endpoint, but showed a strong trend toward efficacy, particularly for non-motor features, which warrants further investigation.