An observational study in Sleep Quality, sponsored by Nanfang Hospital, Southern Medical University. Not yet recruiting. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-05-14.
Sponsored by Nanfang Hospital, Southern Medical University · Observational
The aim of this study is to investigate the effects of screen use within one hour before bedtime on sleep quality and cognitive function in medical graduate students, and to verify the mediating effect of sleep quality between the two. The study adopted a cross-sectional observational design and planned to enroll 508 full-time medical graduate students. The primary endpoints were evaluated using the Pittsburgh Sleep Quality Index (PSQI) and standardized cognitive tests (N-back, ANT, etc.), while secondary endpoints included insomnia severity, anxiety/depression regulation, gut microbiota diversity, and the interaction between physical activity and sleep. Data collection includes questionnaire surveys (PSQI, ISI, GAD-7, etc.), cognitive task testing, and analysis of gut microbiota samples. The final result will provide scientific basis for improving the sleep and cognitive health of medical graduate students.
1,925 studies on the registry are indexed under Sleep Initiation and Maintenance Disorders; 612 are open to participants now.
This study's planned enrollment of 508 is above the median of 134 across 202 observational studies indexed under Sleep Initiation and Maintenance Disorders.
Browse Sleep Initiation and Maintenance Disorders studies →Nanfang Hospital, Southern Medical University is the lead sponsor of 488 studies on the registry; 213 are open to participants now.
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medical postgraduate
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Full time medical graduate student at Southern Medical University
Have taken the following medications within the past month: antibiotics, probiotics, sleeping pills, laxatives, or intestinal cleansers, etc;
No intervention measures
Sleep questionnaire cognitive task
Sleep quality assessed through the Pittsburgh Sleep Quality Index (PSQI) total score,The higher the PSQI score, the more likely it is that the sleep quality is poor
Time frame: baseline
No study locations are listed for this record.
Plan to share: Yes — 论文
Supporting information: Study protocol, Statistical analysis plan
No publications or documents are linked to this record.
This study is not yet recruiting, as verified in May 2025. You cannot join it, but the record below documents what was studied.
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Sleep Initiation and Maintenance Disorders →
Nanfang Hospital, Southern Medical University →