From Kindergarten Through Second Grade, US Children's Obesity Prevalence Grows Only During Summer Vacations
From Kindergarten Through Second Grade, US Children's Obesity Prevalence Grows Only During Summer Vacations
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DOI：
10.1002/oby.21613
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发表时间：
2016-11-01
期刊：
影响因子：
6.9
通讯作者：
Workman, Joseph
中科院分区：
文献类型：
--
作者：
von Hippel, Paul T.;Workman, Joseph
目的：为了评估学校和非学校危险因素的相对重要性，本研究估计了超重和肥胖患病率是在学年还是在暑假期间增长更快。方法：在《2010-11年幼儿园班幼儿纵向研究》中，对全美具有代表性的18170名儿童进行了从2010年幼儿园秋季到2013年二年级春季的复杂随机抽样调查。每年秋天和春天，学校都会测量孩子们的体重和身高。使用多水平增长模型来估计每个夏季和每个学年的平均BMI、超重患病率和肥胖患病率的增长。结果：从幼儿园秋季到二年级春季，肥胖患病率从8.9%上升到11.5%，超重患病率从23.3%上升到28.7%。所有患病率的增加都发生在两个暑假期间；在三个学年中，任何一年都没有增加。结论：儿童失学时肥胖的风险高于在校时。
Objective: To assess the relative importance of school and nonschool risk factors, this study estimated whether overweight and obesity prevalence grows faster during the school year or during summer vacation.Methods: In the Early Childhood Longitudinal Study, Kindergarten Class of 2010-11, a nationally representative complex random sample of 18,170 U.S. children was followed from the fall of kindergarten in 2010 through the spring of second grade in 2013. Children's weight and heights were measured in schools each fall and spring. A multilevel growth model was used to estimate growth in mean BMI, overweight prevalence, and obesity prevalence during each summer and each school year.Results: From the fall of kindergarten to the spring of second grade, the prevalence of obesity increased from 8.9% to 11.5%, and the prevalence of overweight increased from 23.3% to 28.7%. All of the increase in prevalence occurred during the two summer vacations; no increase occurred during any of the three school years.Conclusions: The risk of obesity is higher when children are out of school than when they are in school.