Association of sedentary behaviors with visual acuity among primary school students:a cohort study
10.16835/j.cnki.1000-9817.2021.08.006
- VernacularTitle:广州市小学生静态行为与视力关系的队列研究
- Author:
CHEN Yujing, CHEN Yajun, GUI Zhaohuan, BAO Wenwen, ZHANG Jingshu, TAN Kaiyun, ZHANG Shuxin, CAI Li
1
Author Information
1. Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou(510080), China
- Publication Type:期刊文章
- Keywords:
Behavior;
Vision,low;
Cohort studies;
Regression analysis;
Students
- From:
Chinese Journal of School Health
2021;42(8):1144-1147
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To examine the association of sedentary behaviors with visual acuity among primary school children, and to provide a reference basis for the prevention and control of poor vision.
Methods:Using stratified random cluster sampling method, a total of 4 969 students in grade 1-4 were selected from 5 primary schools in Guangzhou in 2017, and then were followed up in 2019. A validated questionnaire was used to collect data on children s sedentary behaviors, including doing homework, watching TV, playing computer/video games, and taking the bus/car between home and school. Visual acuity was measured in the baseline and the follow up using a 5 m standard logarithmic visual acuity chart. Multiple linear regression and Logistic regression were conducted to analyze the relationship between sedentary behaviors and visual changes.
Results:The two year cumulative incidence of poor vision was 48.74%. Homework time was inversely associated with visual acuity of left eye( β=-0.012, 95%CI =-0.023- -0.002 ). Homework time was positively correlated with poor vision( OR =1.16, 95% CI =1.05-1.27). However, total sedentary time, screen time and bus/car time were not statistically associated with changes in visual acuity( P >0.05).
Conclusion:Increased homework time was associated with poorer vision in primary school students. Interventions to reduce the academic burden should be taken.
