Department of Agricultural and Applied Economics, University of Georgia, Athens, GA 30602, USA.
Nutrients. 2021 Mar 24;13(4):1046. doi: 10.3390/nu13041046.
Obesity and other diet-related health conditions have received much attention in the public health literature over the past two decades. This study investigates the relationship between household food budget shares at different food outlets with diet quality and weight-related health outcomes in the United States. Our analysis used event-level food purchase data from the national household food acquisition and purchases survey (FoodAPS). We find that, after controlling for observables, food purchase location is significantly associated with diet quality and body mass index (BMI). Our findings indicate that larger food budget shares at convenience stores and restaurants are linked with poor diet quality based on the healthy eating index-2015 (HEI-2015) scores and higher BMI. We further explored potential heterogeneity on outcomes of interest across income groups. Results suggest heterogeneous effects may exist across income groups: low-income households, who spent a larger share of their food budget at convenience stores and fast-food restaurants are related to poor diet quality and more likely to be obese. Our findings will help improve understanding of the causes of diet-related health problems and may illuminate potential avenues of intervention to address obesity.
在过去的二十年中，肥胖和其他与饮食相关的健康问题在公共卫生文献中受到了广泛关注。本研究调查了美国家庭在不同食品销售点的食品预算份额与饮食质量和与体重相关的健康结果之间的关系。我们的分析使用了来自全国家庭食品获取和购买调查（FoodAPS）的事件级食品购买数据。我们发现，在控制可观察因素后，食品购买地点与饮食质量和体重指数（BMI）显著相关。我们的研究结果表明，根据健康饮食指数-2015（HEI-2015）得分和更高的 BMI，在便利店和餐馆的食品预算份额越大，饮食质量越差。我们进一步探索了不同收入群体对感兴趣的结果的潜在异质性。结果表明，收入群体之间可能存在异质效应：在便利店和快餐店花费更大食品预算份额的低收入家庭与较差的饮食质量有关，而且更有可能肥胖。我们的研究结果将有助于更好地理解与饮食相关的健康问题的原因，并可能为解决肥胖问题提供潜在的干预途径。
