Feng Wenhui, Barry Nicole, Mazure Michaela, Page Elina T, Blumenthal Charlotte, Cash Sean B
Department of Public Health and Community Medicine, Tufts University School of Medicine, United States.
Friedman School of Nutrition Science and Policy, Tufts University, United States.
Prev Med. 2025 Jul;196:108295. doi: 10.1016/j.ypmed.2025.108295. Epub 2025 May 3.
This study aims to examine the role of dollar stores as food retailers in the United States and to identify gaps in existing research regarding dollar stores' impact on food access and healthy eating.
Following Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) guidelines, this study reviewed PubMed, Web of Science, EconLit, Scopus, and AgEcon databases to identify research on dollar stores, capturing literature from May 2009 to October 4th, 2023. Only peer-reviewed U.S.-based articles were included.
Few studies focused on dollar stores alone until recently. Dollar stores were often grouped together with other small storefronts. We identified 63 articles that describe dollar stores' role as food retailers. The literature pertaining to dollar stores as food retailers shifted, with the focus shifted from product offerings in the early 2010s to the business landscape recently. The business landscape theme covered the widest array of topics, while the consumer behavior theme comprised the largest number of published studies (~40 %). The most consistent results were found in the product offerings theme, as studies overwhelmingly found that foods offered in dollar stores were less healthy. The health outcome theme had the fewest number of studies, and these findings were inconsistent.
Dollar stores are becoming key players in the U.S. foodscape but remain limited in the availability of healthy food choices, particularly fresh produce. The evidence space of dollar stores and food access is still evolving. Further research is needed to inform public health action.
本研究旨在探讨一元店在美国作为食品零售商的作用，并找出关于一元店对食品获取和健康饮食影响的现有研究中的空白。
本研究遵循系统评价和元分析扩展的范围综述首选报告项目（PRISMA-ScR）指南，对PubMed、科学网、EconLit、Scopus和AgEcon数据库进行了综述，以识别关于一元店的研究，收集了2009年5月至2023年10月4日的文献。仅纳入了美国同行评审的文章。
直到最近，很少有研究单独关注一元店。一元店通常与其他小店面归为一类。我们识别出63篇描述一元店作为食品零售商角色的文章。与一元店作为食品零售商相关的文献发生了变化，重点从2010年代初的产品供应转移到了最近的商业格局。商业格局主题涵盖的主题范围最广，而消费者行为主题的已发表研究数量最多（约40%）。在产品供应主题中发现的结果最为一致，因为研究压倒性地发现一元店提供的食品不太健康。健康结果主题的研究数量最少，且这些结果并不一致。
一元店正在成为美国食品领域的关键参与者，但在健康食品选择方面，尤其是新鲜农产品方面仍然有限。一元店与食品获取的证据空间仍在演变。需要进一步的研究为公共卫生行动提供信息。
