The Food Environment and Student Weight Status, Los Angeles County, 2008-2009
The Food Environment and Student Weight Status, Los Angeles County, 2008-2009
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DOI：
10.5888/pcd9.110191
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发表时间：
2012-02-01
影响因子：
5.5
通讯作者：
Langellier, Brent A.
中科院分区：
文献类型：
--
作者：
Langellier, Brent A.
人们认为影响超重状况的一个因素是食物环境，或在居民区、工作场所和学校提供健康或不健康食品的网点分布。很少有研究调查了儿童和青少年中食物环境与超重患病率之间的关系。这项研究的目的是调查洛杉矶县公立学校周围街角商店和快餐店的分布与学生超重发生率之间的关系。方法采用层次线性模型来评估洛杉矶县学校半英里内的街角商店或快餐店（N = 1,694）的存在与五年级，七年级和九年级学生超重患病率之间的关系。结果街角商店和快餐店的存在因学校的种族/民族构成、Title 1资格以及农村/郊区与城市位置而有显著差异。在对其他因素进行调整后，在半英里内至少有一家街角商店的以拉丁裔为主的学校中，超重发生率比在半英里内没有街角商店的拉丁裔为主的学校高1.6个百分点。在以拉丁裔为主的学校和以白人为主的学校或没有种族/民族为主的学校之间，街角商店与超重患病率之间的关系差异很大。学校半英里内快餐店的存在与学生超重率无关。结论本研究强调了寻求改善街角商店库存和学生购买健康的干预措施的重要性。
IntroductionOne factor believed to affect overweight status is the food environment, or the distribution of outlets that serve healthful or unhealthful foods in residential areas, workplaces, and schools. Few studies have investigated the association between the food environment and the prevalence of overweight among children and adolescents. The objective of this study was to investigate the association between the distribution of corner stores and fast food restaurants around Los Angeles County public schools and the prevalence of overweight among students.MethodsHierarchical linear models were used to assess the association between the presence of corner stores or fast food restaurants within a half-mile of Los Angeles County schools (N = 1,694) and overweight prevalence among students in grades 5, 7, and 9.ResultsThe presence of corner stores and fast food restaurants varied significantly by schools' racial/ethnic composition, Title 1 eligibility, and rural/suburban vs urban location. After adjustment for other factors, overweight prevalence was 1.6 percentage points higher at majority-Latino schools that had at least 1 corner store within a half-mile than at majority-Latino schools that did not have a corner store within a half-mile. The association between corner stores and overweight prevalence varied significantly between majority-Latino schools and schools that were majority-white or that had no racial/ethnic majority. The presence of fast food restaurants within a half-mile of schools was not associated with overweight prevalence among students.ConclusionThis study underscores the importance of interventions that seek to improve the healthfulness of corner store inventories and of student purchases.