Correlation analysis on sleep duration and academic performance among high school students in Shanghai

ObjectiveTo investigate sleep duration among high school students, and its association with their academic performance.

MethodsData was from 2015 Youth Risk Behaviors Surveillance in Shanghai. A total of 6 401 students from 28 high schools were selected through three-stage sampling method. Questionnaire of Adolescent Health Related Behaviors in Shanghai (for high school students) was adopted. Wilcoxon test, Kruskal-Wallis H test, Spearman correlation and ordinal logit analysis were included in the analysis.

ResultsA total of 6 401 high school students were surveyed.And 94.8% of the students were found to sleep less than 8 hours a day, of whom 62.8% slept less than 7 hours. The spearman correlation coefficient was 0.109 (P < 0.01).Compared to those who slept less than 7 h/day, students who sleep more than 7 h/day and 8 h/day had a better academic performance.The OR were 1.42(95%CI:1.29~1.57), 2.04(95%CI:1.65~2.52) respectively.

ConclusionLack of sleep is common and serious among high school students in Shanghai.The findings suggest longer sleep duration correlates with better academic performance.