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Association between time spent outdoors and myopia among junior high school students: A 3-wave panel study in China

This study sought to investigate the recent incidence rate of myopia in Chinese junior high school students and analyze the effect of time spent outdoors on myopia, in addition to facilitating the prevention and control of myopia among students. This study was derived from a national panel study, th...

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Autores principales: Zhang, Linjie, Wang, Weidong, Dong, Xiaoyang, Zhao, Li, Peng, Jia, Wang, Ronghai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Lippincott Williams & Wilkins 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7738137/
https://www.ncbi.nlm.nih.gov/pubmed/33327278
http://dx.doi.org/10.1097/MD.0000000000023462
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author Zhang, Linjie
Wang, Weidong
Dong, Xiaoyang
Zhao, Li
Peng, Jia
Wang, Ronghai
author_facet Zhang, Linjie
Wang, Weidong
Dong, Xiaoyang
Zhao, Li
Peng, Jia
Wang, Ronghai
author_sort Zhang, Linjie
collection PubMed
description This study sought to investigate the recent incidence rate of myopia in Chinese junior high school students and analyze the effect of time spent outdoors on myopia, in addition to facilitating the prevention and control of myopia among students. This study was derived from a national panel study, the China Education Panel Survey. We conducted three rounds of follow-up visits among 10,279 seventh grade students from 112 middle schools in 20 provinces in 2013. In total, 3571 students were selected for the analysis in 2020 by excluding those lost to follow-up and students who were myopic in the first round. The primary outcomes were the prevalence of myopia and the effect of time outdoors on myopia. The baseline characteristics of the included students were described, and the correlation between time spent outdoors and myopia in the three rounds of data was analyzed by a correlation chi-square test. Then, the generalized estimation equation (GEE) was used to estimate the influence of time spent outdoors on myopia after follow-up. There were 3571 students with normal baseline vision, and 1508 (42.23%) students progressed from having a normal vision to myopia in the third round, of whom 706 (46.82%) were male and 802 (53.18%) were female. The results of the chi-square test showed that the time spent outdoors of all students and girls, specifically, was related to myopia (P < .05). Next, the GEE was used to analyze the influence of time spent outdoors on myopia after follow-up. After two model adjustments (individual and family-related characteristics of students), students with < 7 hours/week time spent outdoors retained a high myopia rate than ≥14 hours/week (OR = 1.250; 95% CI: 1.070–1.460). Among boys, there was no statistical correlation between time spent outdoors and myopia (P > .05). For girls, compared with students who spent ≥14 hours/week outdoors, students with <7 hours/week spent outdoors retained a higher myopia rate (OR = 1.355; 95%CI: 1.067–1.720). Increased time spent outdoors can delay the development of myopia. In terms of gender, girls should be targeted to more effectively prevent and control the development and progression of myopia.
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spelling pubmed-77381372020-12-16 Association between time spent outdoors and myopia among junior high school students: A 3-wave panel study in China Zhang, Linjie Wang, Weidong Dong, Xiaoyang Zhao, Li Peng, Jia Wang, Ronghai Medicine (Baltimore) 6600 This study sought to investigate the recent incidence rate of myopia in Chinese junior high school students and analyze the effect of time spent outdoors on myopia, in addition to facilitating the prevention and control of myopia among students. This study was derived from a national panel study, the China Education Panel Survey. We conducted three rounds of follow-up visits among 10,279 seventh grade students from 112 middle schools in 20 provinces in 2013. In total, 3571 students were selected for the analysis in 2020 by excluding those lost to follow-up and students who were myopic in the first round. The primary outcomes were the prevalence of myopia and the effect of time outdoors on myopia. The baseline characteristics of the included students were described, and the correlation between time spent outdoors and myopia in the three rounds of data was analyzed by a correlation chi-square test. Then, the generalized estimation equation (GEE) was used to estimate the influence of time spent outdoors on myopia after follow-up. There were 3571 students with normal baseline vision, and 1508 (42.23%) students progressed from having a normal vision to myopia in the third round, of whom 706 (46.82%) were male and 802 (53.18%) were female. The results of the chi-square test showed that the time spent outdoors of all students and girls, specifically, was related to myopia (P < .05). Next, the GEE was used to analyze the influence of time spent outdoors on myopia after follow-up. After two model adjustments (individual and family-related characteristics of students), students with < 7 hours/week time spent outdoors retained a high myopia rate than ≥14 hours/week (OR = 1.250; 95% CI: 1.070–1.460). Among boys, there was no statistical correlation between time spent outdoors and myopia (P > .05). For girls, compared with students who spent ≥14 hours/week outdoors, students with <7 hours/week spent outdoors retained a higher myopia rate (OR = 1.355; 95%CI: 1.067–1.720). Increased time spent outdoors can delay the development of myopia. In terms of gender, girls should be targeted to more effectively prevent and control the development and progression of myopia. Lippincott Williams & Wilkins 2020-12-11 /pmc/articles/PMC7738137/ /pubmed/33327278 http://dx.doi.org/10.1097/MD.0000000000023462 Text en Copyright © 2020 the Author(s). Published by Wolters Kluwer Health, Inc. http://creativecommons.org/licenses/by-nc/4.0 This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial License 4.0 (CCBY-NC), where it is permissible to download, share, remix, transform, and buildup the work provided it is properly cited. The work cannot be used commercially without permission from the journal. http://creativecommons.org/licenses/by-nc/4.0
spellingShingle 6600
Zhang, Linjie
Wang, Weidong
Dong, Xiaoyang
Zhao, Li
Peng, Jia
Wang, Ronghai
Association between time spent outdoors and myopia among junior high school students: A 3-wave panel study in China
title Association between time spent outdoors and myopia among junior high school students: A 3-wave panel study in China
title_full Association between time spent outdoors and myopia among junior high school students: A 3-wave panel study in China
title_fullStr Association between time spent outdoors and myopia among junior high school students: A 3-wave panel study in China
title_full_unstemmed Association between time spent outdoors and myopia among junior high school students: A 3-wave panel study in China
title_short Association between time spent outdoors and myopia among junior high school students: A 3-wave panel study in China
title_sort association between time spent outdoors and myopia among junior high school students: a 3-wave panel study in china
topic 6600
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7738137/
https://www.ncbi.nlm.nih.gov/pubmed/33327278
http://dx.doi.org/10.1097/MD.0000000000023462
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