ArticleNature and science of sleep2025
Associations Between Sleep Duration, Sleep Quality, and Depressive Symptoms: Evidence from Medical Graduate Students in China.
Article in Nature and science of sleep, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- The association between food insecurity and poor sleep quality among transgender women of color: The TURNNT cohort study.The journal of LGBTQ+ mental health · 2026Article
- The Relationship Between Perfectionism and Sleep Quality Among Master's Students: The Mediating Role of Competitive Personality and the Moderating Effect of Resilience.Behavioral sciences (Basel, Switzerland) · 2026Article
- Single-Arm Pre-Post Evaluation of a Six-Week Mindset-Integrated Stress Regulation Course Among Postgraduate Students at a Chinese Medical University.Advances in medical education and practice · 2026Article
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Authors and funding
5 authors.
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Abstract
Objective: This study aims to explore the independent and combined effects of sleep duration and sleep quality on depressive symptoms in the medical graduate student population, utilizing causal inference methods, in order to provide more informative evidence to support mental health interventions in this group. Methods: A cross-sectional study was conducted among 2591 medical graduate students from Sun Yat-sen University in Guangdong, China. Participants completed self-administered questionnaires, including the Center for Epidemiological Survey Depression Scale (CES-D) for depressive symptoms and the Pittsburgh Sleep Quality Index (PSQI) scale for sleep quality. Sleep duration was categorized based on hours of sleep per night. A causal inference approach using inverse probability weighting (IPW) was employed to evaluate the relationship between sleep factors and depression risk. Results: Individuals sleeping less than 7 hours had a 1.65-fold higher depression risk ( Conclusion: Both sleep duration and quality are significantly associated with depressive symptoms among medical graduate students. These findings may support targeted interventions that improving sleep hygiene, particularly for those with low sleep quality, while also emphasizing the importance of maintaining an optimal sleep duration of 7-8 hours for those with high-quality sleep.
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