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Relationship Between Sleep Quality and Mood: Ecological Momentary Assessment Study
Sofia Triantafillou1, Sohrab Saeb2, Emily G Lattie2,3
1Department of Biomedical Engineering, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA, United States.
Good sleep quality significantly impacts daily mood more than mood affects sleep. This daily connection between sleep and mood was confirmed in a 6-week study using mobile assessments.
Area of Science:
- Psychology
- Sleep Science
- Digital Health
Background:
- Sleep disturbances are linked to daily mood fluctuations.
- The bidirectional relationship between sleep and mood requires further investigation.
- Mobile phones offer a method for ecological momentary assessment of daily experiences.
Purpose of the Study:
- To examine the day-to-day relationship between self-reported mood and sleep quality.
- To quantify the causal impact of sleep on mood and vice versa.
Main Methods:
- 208 adult participants completed daily mood and sleep quality assessments via mobile phones for 6 weeks.
- Participants were categorized into depressed, anxious, comorbid, and control groups.
- Mixed-effects models and propensity score matching were used to analyze the bidirectional effects.
Main Results:
- A significant bidirectional relationship was found between sleep quality and mood.
- The impact of sleep quality on subsequent mood was substantially greater than the impact of mood on sleep.
- These associations remained robust, unaffected by confounding variables like stress or weather.
Conclusions:
- Daily sleep quality and mood exhibit a strong, unidirectional relationship, with sleep quality being a more potent predictor of mood.
- Participant-specific effects were crucial in understanding this relationship.
- The observed link is not mediated by environmental factors or historical sleep/mood data.
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