Regional price differences and food consumption frequency among elementary school children
Regional price differences and food consumption frequency among elementary school children
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DOI：
10.1016/j.puhe.2010.11.016
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发表时间：
2011-03-01
期刊：
影响因子：
5.2
通讯作者：
Datar, A.
中科院分区：
文献类型：
--
作者：
Sturm, R.;Datar, A.
目标：食品价格可能影响青少年的饮食和体重增加，并导致肥胖的地理差异。本文探讨了美国小学生水果/蔬菜和零食的区域价格与消费频率之间的关联。研究设计：使用五年级儿童（平均年龄 11 岁）的个人调查数据和基于 2004 年商店访问的区域食品价格进行观察性研究。方法：因变量是五年级学生自我报告的消费频率；主要解释变量是大都市区食品价格相对于生活成本的影响。多元回归分析。结果：大都市地区之间存在价格差异，蔬菜和水果的实际价格较低预示着摄入频率显着较高。乳制品价格上涨预示牛奶消费频率降低，而肉类价格上涨则预示牛奶消费增加。对于快餐或软饮料的消费，没有发现类似的价格影响。讨论：美国各地食品价格的地理差异足以影响年轻人对水果、蔬菜和牛奶的饮食模式。价格变化要么太小，不足以影响儿童对快餐或软饮料的消费频率，要么这些食品的消费对价格敏感度较低。 (C) 2010 英国皇家公共卫生学会。由爱思唯尔有限公司出版。保留所有权利。
Objective: Food prices may affect diet and weight gain among youth and lead to geographic disparities in obesity. This paper examines the association between regional prices and consumption frequency of fruit/vegetables and snack items among elementary school children in the USA.Study design: Observational study using individual-level survey data of fifth-grade children (average age 11 years) and regional food prices based on store visits in 2004.Methods: Dependent variables are self-reported consumption frequency in fifth grade; primary explanatory variables are metropolitan area food prices relative to cost of living. Multivariate regression analysis.Results: Price variation across metropolitan areas exists, and lower real prices for vegetables and fruits predict significantly higher intake frequency. Higher dairy prices predict lower frequency of milk consumption, while higher meat prices predict increased milk consumption. Similar price effects were not found for fast food or soft drink consumption.Discussion: The geographic variation in food prices across the USA is sufficiently large to affect dietary patterns among youth for fruit, vegetables and milk. The price variation is either too small to affect children's consumption frequency of fast food or soft drinks, or the consumption of these foods is less price sensitive. (C) 2010 The Royal Society for Public Health. Published by Elsevier Ltd. All rights reserved.