中学生视屏时间与身心亚健康的关联性研究

目的了解中学生视屏时间分布情况,分析中学生学习日或周末视屏时间对身心亚健康的影响。方法 2015年10—11月抽取安徽省某市普通初高中3 477名在校学生进行问卷调查,收集一般人口统计学信息和视屏时间,并利用《青少年亚健康多维评定问卷》评价身心亚健康状况。采用χ~2检验比较不同视屏时间组间身心亚健康状态检出率的差异,建立Logistic回归模型分析中学生视屏时间对身心亚健康的影响。结果学习日和周末视屏时间>2 h/d者分别为605人(17.4%)和2 126人(61.1%),躯体亚健康状态者958人(27.6%),心理亚健康状态者794人(22.8%)。多因素Logistic回归分析显示,学习日视屏时间>2 h/d(OR=1.25,95%CI:1.02～1.53;OR=1.48,95%CI:1.19～1.82),周末视屏时间>2 h/d(OR=1.44,95%CI:1.22～1.69;OR=1.72,95%CI:1.44～2.05),学习日和周末视屏时间均>2 h/d(OR=1.63,95%CI:1.29～2.70;OR=2.13,95%CI:1.65～2.74)会显著增加中学生躯体和心理亚健康的风险。结论较长视屏时间会增加中学生身心亚健康风险,控制视屏时间有助于中学生身心健康的促进。

Study on the association between screen time and physical as well as psychological sub-health in middle school students

Objective To describe the distribution of screen time in adolescents,and to examine the influence of screen time in the study days or weekends on physical and psychological sub-health. Methods A total of 3 477 students in an ordinary high school in Anhui province were surveyed from October to November 2015.General demographic data and screen time were collected,and the Multidimensional Sub-health Assessment Questionnaire of Adolescents(MSQA) was used to assess physical and psychological health.The difference on the rate of physical and psychological sub-health between various screen time groups was analyzed by chi-square test.Logistic regression model was used to analyze the effect of screen time and physical and psychological sub-health. Results Totally 605(17.4%) adolescents had screen time on study days and 2 126(61.1%) on weekends over 2 hours per day.And 958 adolescents(27.6%) suffered from physical sub-health and 794 adolescents(22.8%) with psychological sub-health in this survey.Multivariate Logistic regression analysis showed that screen time over 2 h/d on study days(physical sub-health OR=1.25,95%CI:1.02-1.53; psychological sub-health OR=1.48,95%CI:1.19-1.82),screen time over 2 h/d on weekends(physical sub-health OR=1.44,95%CI:1.22-1.69; psychological sub-health OR=1.72,95%CI:1.44-2.05),and screen time over 2 h/d both on study days and weekends(physical sub-health OR=1.63,95%CI:1.29-2.70; psychological sub-health OR=2.13,95%CI:1.65-2.74) will increase the risk of the physical and psychological sub-health in adolescents. Conclusions Longer screen time will increase the risk of physical and psychological sub-health in adolescents.And it may be helpful to improve physical and psychological health by limiting the screen time.