睡眠时长对中小学生学业成绩的影响
The Influence of Sleep Duration on Academic Performance of Primary and Middle School Students

Objective: To understand the current status of sleep duration among primary and secondary school students in China and its influence on their academic performance, so as to provide a reference for improving their academic performance more effectively. Methods: Based on the China Family Panel Studies 2018 data, a total of 3993 primary and secondary school students aged 6~16 and their parents were investigated and analyzed. Results: The average sleep duration of primary and sec-ondary school students was (9.02 ± 0.96) h, the average academic performance was (2.78 ± 0.92), and the average BMI was (17.61 ± 5.51) kg/m2. The average sleep duration, academic performance and BMI of primary school students were (9.29 ± 0.80) h, (2.86 ± 0.92), (17.24 ± 5.77) kg/m2, and those of middle school students were (8.23 ± 0.96) h, (2.52 ± 0.88), (18.71 ± 4.49) kg/m2, respec-tively. The sleep attainment rate of primary and middle school students was 29.39% and 28.16%, respectively. The increase of sleep time can indeed improve the academic performance of students, but it is mainly for the primary school students whose sleep time is not up to the standard (B = 0.101, P < 0.05). For primary and middle school students who reached the sleep standard, their ac-ademic performance decreased with the increase of sleep time (B = ？0.175, P < 0.1; Middle school students B = ？0.071, P value was not significant). Conclusion: Primary and middle school students are in the critical period of physical development. Adequate sleep is not only conducive to physical growth, but also conducive to the improvement of academic performance and cognitive level. More attention should be paid to the sleep quality and duration of primary and middle school students to improve their academic performance and health status.