Social Inequalities in Food Exposure Around Schools in an Urban Area
Social Inequalities in Food Exposure Around Schools in an Urban Area
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DOI：
10.1016/j.amepre.2010.03.014
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发表时间：
2010-07-01
影响因子：
5.5
通讯作者：
Daniel, Mark
中科院分区：
文献类型：
--
作者：
Kestens, Yan;Daniel, Mark
背景：儿童和青少年的肥胖流行，以及这种关系中的社会梯度，可能与初级环境中不同食物来源的暴露有关。虽然区域层面的贫困与提供高热量食物的快餐店之间的积极联系已经得到了充分的证明，但很少有研究评估学校周围的食物来源。目的：本研究评估学校周边食物来源、社区收入和商业密度之间的关系。方法：2005年，利用地理信息系统对加拿大蒙特利尔市中小学附近的快餐店、水果和蔬菜店以及提供全方位服务的餐馆进行了调查。2009年，考虑到商业密度，对学校周围地区的食物来源可获得性与社区收入的关系进行了分析。结果：在确定的1168所学校中，观察到与食物来源相关的强烈邻里收入梯度。相对于收入最高的四分位数学校，快餐店位于低收入四分位数学校750米范围内的几率为30.9 （95% CI = 19.6, 48.9）。在提供全方位服务的餐馆（OR = 77, 95% CI = 35, 169.3）和水果蔬菜商店（OR = -29.6, 95% CI = 18.8, 46.7）中也观察到类似的关系。这些关联有所减少，但在考虑商业密度的模型中仍然很重要。结论：学校周围的食物来源暴露与社区收入呈负相关，但商业密度在一定程度上解释了这种联系。有必要进一步研究在校青年的食物消费与附近食物来源机会的关系。[J]中华预防医学杂志2010；39(1):33-40
Background: The obesity epidemic among children and youth, and the social gradient in this relationship, could be related to differential exposure to food sources in primary environments. Although the positive association between area-level deprivation and fast-food outlets offering high-calorie foods has been well documented, few studies have evaluated food sources around school settings.Purpose: This study evaluated the relationships among food sources around schools, neighborhood income, and commercial density.Methods: A GIS was used to derive measures of exposure to fast-food outlets, fruit and vegetable stores, and full-service restaurants near primary and secondary schools in Montreal, Canada, in 2005. Food source availability was analyzed in 2009 in relation to neighborhood income for the area around schools, accounting for commercial density.Results: For the 1168 schools identified, strong neighborhood income gradients were observed in relation to food sources. Relative to the highest income- quartile schools, the odds of a fast-food outlet being located within 750 m of a low income- quartile school was 30.9 (95% CI = 19.6, 48.9). Similar relationships were observed for full-service restaurants (OR = 77, 95% CI = 35, 169.3) and fruit and vegetable stores (OR = -29.6, 95% CI = 18.8, 46.7). These associations were reduced, but remained significant in models accounting for commercial density.Conclusions: Food source exposure around schools is inversely associated with neighborhood income, but commercial density partly accounts for this association. Further research is necessary to document food consumption among youth attending schools in relation to nearby food source opportunities. (Am J Prey Med 2010;39(1):33-40) (C) 2010 American Journal of Preventive Medicine