Food prices, access to food outlets and child weight
Food prices, access to food outlets and child weight
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DOI：
10.1016/j.ehb.2009.01.004
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发表时间：
2009-03-01
影响因子：
2.5
通讯作者：
Bao, Yanjun
中科院分区：
文献类型：
--
作者：
Powell, Lisa M.;Bao, Yanjun
这项研究探讨了食品价格和餐馆和食品商店的可用性对儿童体重指数（BMI）的重要性。我们使用1979年全国青年纵向调查队列中1998年、2000年和2002年的儿童-母亲合并文件，结合从美国商会研究人员协会获得的水果、蔬菜和快餐价格数据，以及快餐和全方位服务餐馆和超市的出口密度数据，从Dun & Bradstreet获得的杂货店和便利店。使用随机效应估计模型，我们发现水果和蔬菜价格上涨10%与儿童BMI增加0.7%相关。在整个样本中，快餐价格没有统计学意义，但与青少年的BMI呈弱负相关，估计价格弹性为-0.12。价格估计是稳健的，我们是否控制基于人均或每土地面积的基础上的网点可用性;然而，食品店和儿童BMI之间的关联取决于定义。水果、蔬菜和快餐价格与BMI的关联在低社会经济地位儿童与高社会经济地位儿童之间的经济和统计学上都显着更强。在低收入儿童中，估计水果和蔬菜以及快餐价格弹性分别为0.14和-0.26，在母亲受教育程度较低的儿童中，分别为0.09和-0.13。(C)2009爱思唯尔有限公司版权所有。
This study examines the importance of food prices and restaurant and food store outlet availability for child body mass index (BMI). We use the 1998, 2000 and 2002 waves of the child-mother merged files from the 1979 cohort of the National Longitudinal Survey of Youth combined with fruit and vegetable and fast food price data obtained from the American Chamber of Commerce Researchers Association and outlet density data on fast food and full-service restaurants and supermarkets, grocery stores and convenience stores obtained from Dun & Bradstreet. Using a random effects estimation model, we found that a 10% increase in the price of fruits and vegetables was associated with a 0.7% increase in child BMI. Fast food prices were not found to be statistically significant in the full sample but were weakly negatively associated with BMI among adolescents with an estimated price elasticity of -0.12. The price estimates were robust to whether we controlled for outlet availability based on a per capita or per land area basis; however, the association between food outlets and child BMI differed depending on the definition. The associations of fruit and vegetable and fast food prices with BMI were significantly stronger both economically and statistically among low- versus high-socioeconomic status children. The estimated fruit and vegetable and fast food price elasticities were 0.14 and -0.26, respectively, among low-income children and 0.09 and -0.13, respectively, among children with less educated mothers. (C) 2009 Elsevier B.V. All rights reserved.