Multi-dimensional sleep status and trend of Chinese students aged 9-22: a large population-based study

Area of Science:

• Sleep Science
• Adolescent Health
• Public Health

Background:

• Sleep is crucial for adolescent development and well-being.
• Understanding current sleep status and trends in students is essential.
• Previous research highlights varying sleep patterns across age groups.

Purpose of the Study:

• To analyze the current sleep status of students aged 9-22 years.
• To examine sleep trends over the past decade.
• To identify persistent sleep issues among different student populations.

Main Methods:

• Utilized data from the Chinese National Survey on Students' Constitution and Health (CNSSCH) involving 44,609 students.
• Employed chi-square tests to compare sleep variables (napping, bedtime, adequacy, social jet lag, sleep debt, chronotypes).
• Applied Student's t-tests and ANOVA to analyze rise time and bedtime variations.

Main Results:

• Primary school students exhibited the highest rates of late bedtimes (41.3% weekdays, 68.7% weekends).
• High school students reported the shortest weekday sleep duration (6:47 ± 0:37).
• College students showed the highest prevalence of late chronotypes (64.3%), with a decade-long increase in sufficient sleep proportion.

Conclusions:

• While overall student sleep conditions show improvement, significant issues like insufficient sleep, late bedtimes, and social jet lag remain prevalent.
• Specific age groups, particularly primary and high school students, face distinct sleep challenges.
• Further investigation is warranted to address the persistent sleep problems affecting student health and academic performance.