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Eye examinations were performed at each visit. The modification effect was assessed on the additive scale using multivariable logistic regression, and relative excess risk due to interaction was used to calculate the modification effect.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>A total of 4683 non-myopic children were included with 32.20% being overweight at baseline. Following a 1-year period, 17.42% of children had myopia. When compared to those who spent &amp;lt;90\u00a0minutes outdoors, children who spent &amp;gt;120 had a relative risk of myopia onset that was reduced to 0.61. As time spent outdoors decreased, more risks of myopia onset were identified among overweight children than among normal children, the modification effect on the additive scale was \u22120.007, with ~70% of this effect attributed to the modifying influence of outdoor time.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions<\/jats:title>\n                  <jats:p>Increasing outdoor time can reduce myopia more among overweight children than normal. Future interventions should focus on outdoor activities among overweight children to reduce myopia risks.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1093\/pubmed\/fdae006","type":"journal-article","created":{"date-parts":[[2024,1,24]],"date-time":"2024-01-24T10:29:41Z","timestamp":1706092181000},"page":"107-115","source":"Crossref","is-referenced-by-count":7,"title":["Effect modification of time spent outdoors on the association between early childhood overweight and myopia: a one-year follow-up study"],"prefix":"10.1093","volume":"46","author":[{"given":"Jin-Liu-Xing","family":"Yang","sequence":"first","affiliation":[{"name":"School of Public Health, Suzhou Medical College of Soochow University , Suzhou, China"},{"name":"Clinical Research Unit , Shanghai Eye Disease Prevention and Treatment Center, Shanghai Eye Hospital, , Shanghai, China"},{"name":"Shanghai Vision Health Center & Shanghai Children Myopia Institute , Shanghai Eye Disease Prevention and Treatment Center, 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