文献类型：期刊文献

英文题名：Effects of Greenness on Myopia Risk and School-Level Myopia Prevalence Among High School-Aged Adolescents: Cross-sectional Study

作者：Zhang, Chang[1] Wang, Cheng[1] Guo, Xin[2,3] Xu, Huiyu[2,3] Qin, Zihao[4] Tao, Liyuan[5,6]

第一作者：张昶

通信作者：Tao, LY[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, Beijing, Peoples R China;[2]Beijing Ctr Dis Prevent & Control, Inst Sch Hlth, Beijing, Peoples R China;[3]Capital Med Univ, Sch Publ Hlth, Beijing, Peoples R China;[4]Univ Queensland, Fac Med, Brisbane, Qld, Australia;[5]Peking Univ Third Hosp, Res Ctr Clin Epidemiol, 49 North Garden Rd, Beijing 100191, Peoples R China;[6]Peking Univ Third Hosp, Med Examinat Ctr, Beijing, Peoples R China

年份：2023

卷号：9

外文期刊名：JMIR PUBLIC HEALTH AND SURVEILLANCE

收录：;Scopus(收录号：2-s2.0-85145956459);WOS:【SSCI(收录号:WOS:000976765100027)，SCI-EXPANDED(收录号:WOS:000976765100027)】；

基金：This study was funded by the National Natural Science Foundation of China (82004210), the National Key R & D Program of China (2018YFC1704400), the European Union's Horizon 2020 research and innovation program (grant agreement 821242), and the Central Nonprofit Research Institutions of the Chinese Academy of Forestry (CAFYBB2020ZB008). No payment was received by any of the coauthors for the preparation of this paper.

语种：英文

外文关键词：high school-aged adolescent; personal myopia risk; school -level myopia prevalence; green space; adjusted effects

摘要：Background: Myopia is a serious public health issue. High school-aged adolescents in Beijing have an alarming prevalence of myopia. Therefore, determining myopia protective factors is essential. Green space has a certain association with myopia protective factors that can protect against myopia.Objective: This study aims to examine the effects of green space around schools on individual myopia risk in high school-aged adolescents and the school-level myopia prevalence.Methods: Green space was measured using the normalized difference vegetation index (NDVI). A total of 13,380 samples of 51 high schools were selected from a 2021 Beijing Municipal Health Commission survey. Adolescent myopia was defined as a spherical equivalent of <=-1.00 diopters in the worse eye. Generalized linear mixed models with a binomial error structure were used to analyze the effects of the NDVI on personal myopia risk and adjust them by other factors, such as demographics, exposure time, and outdoor exercise. The effects of the NDVI on school-level myopia prevalence with adjusted demographics and the relative position factors of trees were analyzed through quasibinomial regression.Results: The overall prevalence of myopia was 80.61% (10,785/13,380, 95% CI 79.93%-81.27%). Although with a 0.1 increase in the 500 and 1000 m buffer NDVIs adjusted by demographic and other factors, the high school-aged personal myopia risk significantly dropped by 16% (odds ratio [OR] 0.84, 95% CI 0.73-0.97) and 12% (OR 0.88, 95% CI 0.79-0.99), respectively. However, only the adjusted 500 m buffer NDVI (by demographics and the position of trees) with a 0.1 increase significantly reduced the school-level myopia prevalence by 15% (OR 0.85, 95% CI 0.74-0.98). Subgroup analysis showed that the adjusted effects of the 500 m buffer NDVI are significant in schoolgirls (OR 0.82, 95% CI 0.72-0.93), juniors (OR 0.82, 95% CI 0.72-0.94), the Han nationality (OR 0.84, 95% CI 0.72-0.97), 1-year exposure (OR 0.84, 95% CI 0.71-0.99) and 3-year exposure (OR 0.78, 95% CI 0.65-0.94).Conclusions: The greenness of a 500 m buffer around schools is associated with a lower personal myopia risk among adolescents and a lower prevalence of myopia in schools. With regard to prevention and control activities, green space within a 500 m buffer around schools is suggested as an independent protective factor for adolescent myopia.