神经网络分析中学生视力不良与教室环境的关系

Analysis of the relationship between visual acuity and classroom environment in middle school students based on BP neural network

目的了解吉林省中学生视力不良情况,调查中学生教室环境现状,为确定下一步学校卫生工作重点提供依据。方法采用分层随机抽样方法,收集学生视力状况、教室面积、课桌椅、黑板、采光、照明及噪声等资料。结果吉林省中学生轻度视力不良、中度视力不良和重度视力不良的检出率分别为32.26%、21.49%和41.16%;在教室环境中黑板面平均照度和课桌椅分配符合率是否合格影响吉林省中学生视力情况(OR=1.697,P<0.001;OR=1.864,P<0.001);在城市和郊区的对比中,教室人均面积、课桌椅分配符合率等比较差异均有统计学意义(P<0.001)。结论预防改善学生视力情况至关重要且是今后学校卫生的首要工作,教室环境是学生视力重要的影响因素,根据城乡差别分别制定合适的政策。

Objective To understand the poor eyesight of middle school students and investigate the current situation of classroom environment in Jilin province.Methods A stratified random sampling method was used to conduct a cross-sectional survey of six middle schools in three cities in Jilin province based on economic conditions,and to collect information on students’visual status,classroom area,desks and chairs,blackboards,lighting,lighting and noise.Results The detection rates of mild visual acuity,moderate visual acuity and severe visual acuity in middle school students in Jilin province were 32.26%,21.49%and 41.16%,respectively.Whether the average illumination of the blackboard surface and desk and chair assignment rate in the classroom environment affect the visual acuity of the middle school students in Jilin province(OR=1.697,P<0.001;OR=1.864,P<0.001).In the comparison between the city and the suburb,the classroom per capita area,the desk and chair distribution conformity rate,and the blackboard size were qualified.The average illumination of the blackboard surface,the uniformity of the illumination on the blackboard surface,the average illumination of the desktop,and the uniformity of the desktop illumination were statistically significant(P<0.001).Conclusion Preventing and improving students’vision is paramount importance of the primary task of school health in the future.The classroom environment is an important factor to influence students’vision,and appropriate policies are formulated according to urban-rural differences.