A Cross-sectional Study on the Correlation Between Screen Usage and Sleep and Cognition in Medical Students

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Total Enrollment

508 participants

Study Classification

OBSERVATIONAL

Study Start Date

2025-05-15

Study Completion Date

2026-05-01

Brief Summary

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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.

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Detailed Description

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Conditions

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Sleep Quality

Study Design

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Observational Model Type

COHORT

Study Time Perspective

CROSS_SECTIONAL

Interventions

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No intervention measures

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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Inclusion Criteria

1. Full time medical graduate student at Southern Medical University
2. Age ≥ 18 years old

Exclusion Criteria

1. Have taken the following medications within the past month: antibiotics, probiotics, sleeping pills, laxatives, or intestinal cleansers, etc;
2. Serious gastrointestinal diseases (inflammatory bowel disease, Crohn's disease, gastric cancer, etc.);
3. Recently (within one month) experienced major life events (such as the death of a relative, surgery);

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes