- Open Access
Association between store food environment and customer purchases in small grocery stores, gas-marts, pharmacies and dollar stores
© The Author(s). 2017
- Received: 3 February 2017
- Accepted: 26 May 2017
- Published: 5 June 2017
Purchases at small/non-traditional food stores tend to have poor nutritional quality, and have been associated with poor health outcomes, including increased obesity risk The purpose of this study was to examine whether customers who shop at small/non-traditional food stores with more health promoting features make healthier purchases.
In a cross-sectional design, data collectors assessed store features in a sample of 99 small and non-traditional food stores not participating in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) in Minneapolis/St. Paul, MN in 2014. Customer intercept interviews (n = 594) collected purchase data from a bag check and demographics from a survey. Store measures included fruit/vegetable and whole grain availability, an overall Healthy Food Supply Score (HFSS), healthy food advertisements and in-store placement, and shelf space of key items. Customer nutritional measures were analyzed using Nutrient Databases System for Research (NDSR), and included the purchase of ≥1 serving of fruits/vegetables; ≥1 serving of whole grains; and overall Healthy Eating Index-2010 (HEI-2010) score for foods/beverages purchased. Associations between store and customer measures were estimated in multilevel linear and logistic regression models, controlling for customer characteristics and store type.
Few customers purchased fruits and vegetables (8%) or whole grains (8%). In fully adjusted models, purchase HEI-2010 scores were associated with fruit/vegetable shelf space (p = 0.002) and the ratio of shelf space devoted to healthy vs. less healthy items (p = 0.0002). Offering ≥14 varieties of fruit/vegetables was associated with produce purchases (OR 3.9, 95% CI 1.2–12.3), as was having produce visible from the store entrance (OR 2.3 95% CI 1.0 to 5.8), but whole grain availability measures were not associated with whole grain purchases.
Strategies addressing both customer demand and the availability of healthy food may be necessary to improve customer purchases.
ClinialTrials.gov: NCT02774330. Registered May 4, 2016 (retrospectively registered).
- Community nutrition
- Customer purchases
- Healthy Eating Index
- Corner stores
Access to high-quality, nutritious food has long been recognized as a contributor to individual dietary behaviors [1–7]. In the U.S., urban residents purchase food and beverages at an array of businesses besides supermarkets [5, 7–11], including small grocery stores (corner stores, bodegas) [10, 12–18], as well as other limited-service businesses, like gas-marts, dollar stores, and pharmacies [19–24]. Together these have been referred to as “small and non-traditional” urban food retailers . These stores attract loyal customers who make food and beverage purchases daily or multiple times a week [12–14, 17, 18, 26]. Small and non-traditional food stores are common in high-minority and low-income neighborhoods, which are also less likely to have supermarkets [27–32].
Small and non-traditional stores offer an abundance of less nutritious foods like sugar-sweetened beverages, salty snacks, and candy [27, 33–37]. Consequently, purchases at small and non-traditional food stores tend to have poor nutritional quality [13–17, 25, 26, 30, 38], and have been associated with poor health outcomes, including increased obesity risk [39–41].
Offering nutritious food at small and non-traditional food stores may result in healthier purchases [18, 26]. In a recent multilevel study in New York City by Ruff et al. (2016), customers at stores that offered more varieties of fresh fruits and vegetables were more likely to purchase produce and less likely to purchase sugar-sweetened beverages than customers at stores that offered fewer varieties of fresh fruits and vegetables . A study by Martin et al. (2012) in small food stores in Hartford, CT showed that each additional type of produce available at the store was associated with 12–15% higher odds of purchasing a fruit or vegetable . While the majority of such stores carry some fresh produce and staple foods [18, 22, 23, 26, 37, 42], purchases of these items are uncommon [16, 25–27, 43]. Indeed, small food store owners cite customer demand as one of the primary considerations in their decision to stocking health food, and often perceive demand to be low [16, 44]. Some features of the food environment have the potential to influence customer decision-making and boost demand, such as store marketing features like advertising, product promotions, and in-store placement of nutritious foods [44–46].
Overall, it is difficult to discern from the public health literature which health-promoting store characteristics are most likely to encourage healthy behavior [45, 50]. In most interventions, marketing strategies are used in combination, making it difficult to identify which ones are effective [28, 45]. Furthermore, evaluations of interventions have often stopped short of using objective purchase data or incorporating rigorous measures of store marketing [17, 28, 42, 51, 52].
The purpose of this study is to examine whether customers who shop at small and non-traditional food stores with more health-promoting features (i.e., marketing, overall healthy food supply, more fruits, vegetables and whole grains) have healthier purchases (i.e., more fruits and vegetables, more whole grains, and higher Healthy Eating Index scores), using objective data on store features and customer purchases. Understanding which health-promoting features are associated with customer purchases in small stores may be useful in designing interventions to improve the nutritional quality of food purchases at small stores .
The study took place between July and November 2014 as part of the baseline evaluation of a city ordinance regulating minimum stocking requirements for food retailers in Minneapolis, MN, USA, as well as comparable stores in St. Paul, MN, USA (the control site). The Minneapolis Staple Foods Ordinance , effective since April 2015, requires all licensed grocery stores in Minneapolis to meet specific stocking requirements for 10 staple food categories , including fruits and vegetables, whole grains, and low-fat dairy. The Minneapolis Staple Foods Ordinance included most small and non-traditional food stores. All data in the current study draw from pre-policy assessments, though the study size was based on the sample size of stores and customers needed to detect a change in store environment and customer purchases over time.
In teams of two, data collectors visited each store to assess the store environment (during one visit) and to collect purchase data from customers exiting the store (during at least one other visit). Data collection took place between 9:00 am and 6:00 pm Monday through Friday, and between 11:00 am and 7:00 pm Saturday and Sunday. Data collectors asked permission from a store employee prior to collecting data, and obtained informed consent before conducting customer interviews. The study was approved by the Institutional Review Board at the University of Minnesota.
Store sample, selection, and enrollment
Store lists were obtained from relevant licensing agencies (i.e., the Minneapolis Health Department for Minneapolis stores and the Minnesota Department of Agriculture for St. Paul stores). Stores were exempt from the ordinance if they would not reasonably be expected to stock a minimal amount and variety of foods (e.g., produce stands), as well as liquor stores and specialty stores (e.g., spice shops). Stores located in the core downtown commercial district were also exempt based on the ordinance. Because the evaluation targeted ordinance-eligible retailers that were not already expected to meet ordinance requirements, stores were excluded if they were supermarkets, mass-merchandizers, or listed in the state Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) database, (and therefore already meeting specific program requirements for stocking healthy, staple foods). Finally, we excluded stores that had invalid licensing addresses.
Out of 255 eligible stores, 180 were randomly selected to participate in the study. After visiting these stores in person, 20 were identified as ineligible due to new participation in WIC (n= 5), misclassification of supermarkets and/or exempt stores on license listings (n = 10), and going out of business by the time of our store visit (n = 5). Three more agreed first to have customer intercept data collected at the store, but soon after lost their grocery license or otherwise became exempt from the ordinance prior to the store assessment data collection. An additional 17 refused or did not give active consent to participate in the store assessment (11 stores stated that corporate policy precluded them from giving consent, 5 stores did not give a reason, and in 1 store the manager was not able to be reached). A final sample of 140 stores participated in the study store assessment (described in detail below) at baseline.
Customer sample, selection, and recruitment
Data collectors were paired based on their availability and visited each store in teams of two. The majority of data collectors were White and female. Upon visiting the store, they introduced themselves as members of a research team at the University of Minnesota and described the research as a study about the healthfulness of customer purchases.
Data collectors stood outside participating stores and attempted to recruit each customer who exited the store with a bag or visible food/beverage purchase. Data collectors carried out recruitment for 30–60 min per visit. If at least 1 survey was completed during the first 30 min of a visit, data collectors stayed an additional 15–30 min. The recruitment target at each store was 5 participants. If this target was not met during the first visit to the store, additional visits were made in an attempt to reach the target. Participants were eligible if they were English-speakers, at least 18 years old, and had made a food/beverage purchase at the store. A $10 incentive was offered to encourage participation. Data collectors performed a bag check in which they recorded details about each food and beverage purchased by the participant, including the product name (e.g., Flaming Hot Cheetos), amount/size (e.g., 3.5 oz. bag), quantity (e.g., 1 each), and price paid (e.g., $1.29). In addition, participants completed a brief survey that included shopping behaviors, perceptions of the local food environment, and demographics (age, gender, race/ethnicity, education, employment). A total of 668 customers were recruited, representing a diverse sample of Minneapolis/St. Paul residents. The overall participation rate was 35%. Based on nonparticipation data, customers who were identified as Black were more likely to participate than those who were identified as White, but there were no systematic differences in participation by gender. Details on recruitment, eligibility status, and nonparticipation have been previously published  and are detailed futher in Additional file 1.
The store environment was assessed using a tool modified from the Yale Rudd Center , which is similar in structure to the validated Nutrition Environment Measure Survey in Stores (NEMS-S) instrument in that they both record availability, price, and (for fresh fruits and vegetables) quality. The Rudd Center tool focuses on WIC-approved items, and in the current study, the tool was further adapted to align with Minneapolis Staple Food Ordinance requirements. A total of 69 food items were evaluated [22, 23]. Agreement for all 69 items was above 80% in inter-rater reliability analyses.
Fruit and vegetable availability at the store included two measures: (1) pounds of fresh fruits and vegetables (with no other ingredients added), for which standard item weights (with refuse weight added) [57, 58] were multiplied by the count of items; and (2) the number of varieties of fresh, frozen and canned fruits and vegetables (with no other ingredients added, except for salt in canned vegetables). Store-level whole grain measures included the number of pounds and varieties of: (1) whole grain–rich cereals, bread, and tortillas; (2) brown rice; and (3) other whole grains and whole grain-rich products products (e.g., plain uncooked oats, whole cornmeal, unpopped popcorn, whole-wheat flour, teff flour, quinoa, pasta). Whole grain-rich snacks (e.g. tortilla chips, pre-popped popcorn) were not included in the whole grain measure. Data collectors counted items as whole grain-rich if the first ingredient listed on the package was a whole grain .
Data were used to create a Healthy Food Supply Score (HFSS) score for each store, which summarized availability, price, quality, and variety of inventory . The summary score had a possible range of 0–31. Higher scores indicate greater availability of healthier foods at the store. The score has previously been used to evaluate overall healthfulness in both WIC and non-WIC stores [22, 56].
Store marketing features, including food advertisements and product placement, were also assessed at each store. Measures were based on a modified tool developed by the CX3 retail scoring system , adapted in the current study . Data collectors recorded whether there were any images of “healthy” foods (e.g., fruits and vegetables, whole grains, beans, nuts and seeds) on store exteriors (storefront doors or windows) or the interiors (next to, below, or on the floor standing to the checkout, or hanging from the store’s ceiling). Stores were then characterized according to whether they had healthy images present on the interior (yes/no) and exterior (yes/no).
Product placement measures assessed whether fresh fruits and vegetables could be seen from the front entrance (yes/no), or if any healthy food items (e.g., bagged nuts/seeds with no added sugar, fresh fruit) were within reach of the cash register (yes/no). Inter-rater agreement ranged from 88% to 100% for store marketing features.
Shelf space for fruits, vegetables, less healthful non-alcoholic beverages, and salty snacks was measured with standard tape measures in inches and rounded to the nearest foot. Less healthful beverages included all non-alcoholic beverages except plain (unflavored) water, unsweetened milk, and 100% juice. Salty snacks included chips, popped and/or flavored popcorn, salted meat snacks, and similar salty, processed foods. It did not include nuts and seeds, rice cakes, or plain crackers. Inter-rater agreement was within 15% for shelf space measures and ranged from 72% (salty snacks) to 89% (vegetables).
Food and beverage purchase data were entered into the nutrient analysis program Nutrition Data System for Research (NDSR). NDSR University of Minnesota Nutrition Coordinating Center Food and Nutrient Database serves as the source of food composition information in NDSR ; the database includes over 18,000 foods including 8000 brand name products. The USDA Nutrient Data Laboratory is the primary source of nutrient values and nutrient composition . NDSR generates food servings for 168 food subcategories in 9 major food groups. If the total number of fruit and vegetable servings purchased (excluding fruit/vegetables juices and fried vegetables) was at least 1, customers were characterized as having made a fruit or vegetable purchase. If the total number of servings of whole grain-rich foods purchased was at least 1, customers were characterized as having made a whole grain purchase. Due to the way in which NDSR classifies foods, it was not possible to completely align the fruit/vegetable and whole grain-rich food measures in the store environment assessment with calculation of these food categories in NDSR. For example, the store environment measure does not include vegetables in mixed dishes such as frozen dinners, whereas vegetables from all food sources are included in the NDSR derived estimate.
To evaluate the nutritional quality of food purchases in a global way, a Healthy Eating Index-2010 (HEI-2010) score was created for each purchase using methods publically at the National Institutes of Health (NIH) . The HEI-2010 is a US Department of Agriculture (USDA) tool used to measure the degree to which a diet or food source is consistent with federal dietary guidelines . HEI-2010 has a range of 0–100, with higher scores indicating better alignment with recommendations . HEI scores are computed by deriving ratios of dietary constituents to energy, and then scoring each of the 12 subcomponents according to minimum and maximum standards outlined by the USDA . The HEI can be applied across different levels of the food supply chain and, regardless of the level, the scores are comparable . It is a valid measure for assessing nutritional quality of the food environment [67–70] or food purchases .
The analysis included stores at which both data on store and customer purchases were collected. Of the 140 stores in which store environment data were collected, 18 additional stores were excluded from the analysis because they did not give active consent for the recruitment of customers for interviews, and at 22 stores, no customer was successfully recruited for an interview. Recruitment was more challenging at stores where customers may have been stopping for a brief errand, or where many customers purchased only non-food items, such as gas-marts and pharmacies. The remaining 100 stores were categorized as corner stores, gas-marts, dollar stores, pharmacies, and one general retailer. The general retailer was excluded from this analysis because it could not be included in models controlling for store type. Thus, the final analytic sample was comprised 99 stores at which 594 customer intercept interviews took place. The majority of stores (56%) had 5 to 10 customers recruited and 10% of stores had more than 10 customers recruited, with a maximum of 20 customers.
We calculated descriptive statistics for all measures. For normally distributed continuous measures we calculated means with standard deviations; for continuous measures that were not normally distributed we calculated medians with the first and third quartile. For dichotomous measures we calculated percentages. To examine the associations between store environment features and purchase outcomes, we computed multilevel linear regression models (the for HEI-2010 outcome) or logistic regression models (for the fruit/vegetable and whole grains purchase outcomes), with store identification treated as a random effect to account for nesting of customers within stores. We computed a series of three models for each independent variable—(1) unadjusted; (2) adjusted for individual covariates (age, gender, race/ethnicity, and education); (3) adjusted for individual covariates and store type. The number of store aisles and registers were not included in our final models because they were highly correlated with each other and with store type. In linear models, we calculated least square means of HEI-2010 for each level for categorical independent variable; for the continuous HFSS variable, we present the regression coefficients and standard errors. For interpretability, the mean HEI-2010 at the median and 25th and 75th percentiles of HFSS were also calculated. Availability measures for fruits and vegetables and whole grain-rich foods were treated as categorical variables, approximating tertiles or quartiles based on each variable’s distribution. In logistic models, odds ratios with 95% confidence intervals used the lowest level of the independent measure as the reference group, unless the lowest group was “none,” in which case the second lowest group was used as the reference group and estimates were not provided for the “none” category . Analyses were done using SAS/STAT software Version 9.4 (SAS Institute, 2002–2012); the significance level was p < 0.05.
Participant characteristics and purchases
Participant and small and non-traditional food store characteristicsa
Participant characteristics (n = 594)
Purchase of a fruit or vegetable (≥1 serving)
Purchase of a whole grain (≥1 serving)
HEI-2010b of purchase
High school or less
Other (student, retired, disability)
Store characteristics (n = 99)
Median (Q1, Q3)
Pounds of fruits/vegetables (fresh and frozen)
15 (0, 52)
Varieties of fruits/vegetables (fresh, frozen and canned)
9 (5, 15)
Pounds of whole grains
14 (2, 37)
Varieties of whole grains
2 (1, 3)
Shelf space (in feet)
4 (0, 9)
Unhealthy foods (snacks & sugar-sweetened beverages)
359 (244, 420)
Ratio of fresh fruits/vegetables to unhealthy foods
0.01 (0, 0.03)
Healthy Food Supply Score (HFSS)c
Healthy impulse buys at checkout
Fruit/vegetable impulse buys at checkout
Healthy ads/promos: exterior
Healthy ads/promos: interior
Fruit/vegetables visible from entrance
Number of aisles
Number of registers
Store environment characteristics
As presented in Table 1, store sample was comprised of 40% corner stores, 30% gas-marts, 8% dollar stores, and 21% pharmacies. Stores carried a median of 15 lb of fresh and frozen fruits and vegetables, and a median of 9 varieties of fresh, frozen, and canned fruits and vegetables. Stores had a median of 14 lb of whole grains available in 2 varieties. The overall Healthy Food Supply Score (HFSS) was 11. Stores had a median of 4 ft of shelf space for fresh fruits and vegetables, compared with a median of 359 ft for salty snacks and sugar-sweetened beverages. Nearly two-thirds of stores had healthy impulse buys at the point-of-purchase, but a minority of stores had healthy interior or exterior advertisements or produce in visible areas.
Association between overall healthy food availability and promotions and Healthy Eating Index (HEI-2010) of purchasesa
LS means (HEI-2010)
LS means (HEI-2010)
LS means (HEI-2010)
Healthy impulse buys
Healthy advertisements: exterior
Healthy advertisements: interior
Shelf space: Fresh fruits/vegetables (in feet)
Shelf space ratio: Fruits/vegetables to unhealthy
Healthy Food Supply Score (HFSS)e
(β = 0.3; se = 0.1)
(β = 0.3; se = 0.1)
(β = 0.2; se = 0.2)
Association between fruits/vegetables and whole grains availability and purchases of fruits/vegetables and whole grainsa
Odds of fruits/vegetables purchasedd
Pounds: fresh & frozen
Varieties: fresh, frozen, & canned
Healthy impulse buys
Shelf space: fresh
Shelf space ratio
Visible from entrance
Odds of whole grains purchasee
Neither the number of pounds nor the number of varieties of whole grains was associated with whole grain purchases.
In Minneapolis and St. Paul, MN, a number of store availability and marketing features were associated with more healthful customer purchases in corner stores, gas-marts, dollar stores, and pharmacies. In general, healthy purchases were more consistently associated with healthy food availability measures (including pounds, varieties, shelf space for fruits and vegetables, and overall healthy food supply) than with healthy food marketing features. These findings are largely consistent with a recent study of New York City bodegas by Ruff et al. (2016), which demonstrated that carrying fewer varieties of produce was significantly associated with a lower odds of purchasing produce among customers, but that healthy product promotions were not related purchases .
Recent recommendations from an expert panel convened by the Robert Wood Johnson Foundation’s Healthy Eating Research (HER) program have included suggested standards for the availability and marketing of healthy foods in small food stores . These recommendations suggest that stores stock at least 10 (at a “basic” level), and up to 14 (at a “preferred” level) varieties of fruits and vegetables. In the current study, customers had about 3 times greater odds of purchasing produce at stores that offered at least 14 varieties, although longitudinal assessments will be necessary to determine the actual impact of stocking changes on purchasing behavior.
There was no relationship between the availability of whole grains and whole grain purchases in the current study. It may be that single-serving items (including fruit) are a more relevant target for promotions in our store sample than items like whole grain-rich bread and cereal. Most stores did, however, carry whole grain-rich items in quantities that approach HER recommendations for whole grains .
Marketing features promoting healthy purchases were not consistently associated with healthy food purchases. In-store healthy food promotions did not appear to be relevant to customer behavior, perhaps because of the pervasiveness of less healthy marketing on the store interior and exterior. Indeed, a previous study in the area found that two-thirds of stores had less healthy interior advertisements displayed while 98% had less healthy impulse buys . As demonstrated by the robust association between the ratio of healthy-to-less-healthy food shelf-space and HEI-2010 scores, the balance of healthy and less healthy store features likely has a high relevance to customer behavior [32, 36, 45]. Similar to the idea of a “food swamp”  (which recognizes that a relative abundance of less healthy food venues in a geographic area can contribute to poor dietary outcomes among residents ), less healthy options inside a single store may be more likely to prevail when only a token amount of healthy options are available [21, 46, 74].
Research on interventions to promote healthful purchases in small food stores has recognized the complexity of such endeavors , demonstrating mixed success in changing customer outcomes [15, 17, 28, 51, 52, 75]. Beyond availability and marketing, using demand-driven and community engagement strategies have been recognized as key to successful interventions [47, 72]. More work is needed to create reasonable policies and programmatic approaches that reach stores that have not historically participated in intensive interventions. This includes working within the capacity of managers from non-traditional store types, like gas-marts, dollar stores, and pharmacies.
Indeed, store type likely plays an important role in the types of purchases that customers make. Customers may be conditioned to seek out or avoid certain store types when they are looking for a healthy snack, irrespective of the actual store environment [26, 45]. At the same time, store type and store environment features are highly correlated, often because availability and marketing are largely consistent within chain stores. Including store type in the model may, therefore, have over-controlled for relevant store characteristics.
This study has several limitations. Given its cross-sectional design, we cannot imply a causal relationship between store features and food purchasing. Second, the shelf space measures were based only on the amount of fresh fruits, vegetables, less healthy beverages, and salty snacks in the store. Undoubtedly, other healthy options that stores offered were not reflected in the measures, including frozen fruits and vegetables, whole grains, and lean proteins. We also did not obtain data on other store features that are rarely measured but may nonetheless be relevant to customer purchasing patterns, such as store cleanliness or other aesthetics [76–78].
Additionally, the participation rate of 35% in this study could introduce bias, though it is not possible for us to know if customers who participated were more or less likely to make healthier purchases. Of note, anyone exiting stores who carried a bag and did not engage with data collectors was marked as a refusal, even though they may have been ineligible, which may have resulted in an artificially low response rate. Another consideration is that the study was conducted in a relatively small geographic area and results may not be generalizable to other areas. However, in conjunction with the broader body of small food store literature, our results are consistent with patterns of purchases observed in other studies, and are unlikely to be explained by selection bias or characteristics of the particularly study setting.
This study also has a number of strengths. Few previous studies have used objective data to examine how health-promoting store characteristics are related to purchases. Furthermore, our findings are relevant in the context of the growing focus on the contribution of small food stores to the urban food environment by public health practitioners and policymakers, nationally and locally. The study may have implications for stores participating in federal food assistance programs such as Supplemental Nutrition Assistance Program (SNAP) , as more rigorous store stocking standards have recently been outlined by the USDA. These changes will primarily affect small and non-traditional stores, as larger grocery stores likely already meet the proposed requirements.
Customer purchases of fruits and vegetables were higher in stores with the greatest amount, variety, and shelf-space of produce, and overall healthy food supply was associated with overall healthier purchases. However, in small and non-traditional food stores, healthy food marketing may be overwhelmed by ubiquitous marketing for less healthy options. Findings from this study in combination with results from previous studies suggest that efforts must be made to increase the supply and promotion of healthy items while simultaneously reducing the supply and promotion of less healthy options. New recommendations for small food stores and recent policy initiatives should be rigorously evaluated to create sustainable strategies with a wide reach to improve customer purchases, particularly in understudied businesses like gas-marts, dollar stores, and pharmacies.
We would like to acknowledge Kristen Klingler and Nora Gordon at the Minneapolis Health Department for their partnership, support and expertise working with local small food stores. We would also like to acknowledge the large data acquisition and data management team, most especially Stacey Moe and Pamela Carr-Manthe. Finally, we thank the store customers and retailers who generously participated in this study.
Availability of data and material
The data that support the findings of this study are available from the corresponding author upon reasonable request. Study instruments and protocols are available on reasonable request from the authors.
This research was supported by the National Institute of Diabetes and Digestive and Kidney Diseases of the National Institutes of Health (ML grant number R01DK104348) and the Global Obesity Prevention Center (GOPC) at Johns Hopkins, which is supported by the Eunice Kennedy Shriver National Institute of Child Health and Human Development and the Office of the Director, National Institutes of Health (ML, grant number U54HD070725). Support for the lead author was provided by the National Cancer Institute, Cancer Related Health Disparities Education and Career Development Program (CC, grant number R25CA163184). NIH grant UL1TR000114 from the National Center for Advancing Translational Sciences (NCATS) supported data management. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. Funding agencies had no role in the design, analysis or writing of this manuscript.
CC was responsible for formulating research questions, leading manuscript writing; CC also supported carrying out the study from which these data originated. KL conducted the data analysis and contributed to writing/revision of the manuscript. JP assisted with data management and data analysis, contributed to writing/revision of the manuscript, and supported carrying out the study from which these data originated. TB assisted with variable creation and contributed to writing and revising the manuscript. LH oversaw the nutrient analysis, assisted in interpreting results; made contributions to writing and revising the manuscript. DE guided and provided feedback on the analysis, assisted in interpreting results, gave feedback on analyses and writing/revision of the manuscript. ML was responsible for leading the overall study from which these data originated, including conception/design, funding acquisition and implementation; ML also gave feedback on analyses and writing/revision of the manuscript. All authors read and approved the final manuscript.
The authors declare that they have no competing interests.
Consent for publication
Ethics approval and consent to participate
Ethics approval was provided by the University of Minnesota’s Institutional Review Board, study 1410S54204 (PI Laska). Informed consent was obtained by study staff for all participants.
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- Morland K, Wing S, Roux A. The contextual effect of the local food environment on residents’ diets: The atherosclerosis risk in communities study. Am J Public Health. 2002;92:1761–7.View ArticlePubMedPubMed CentralGoogle Scholar
- Caspi CE, Sorensen G, Subramanian SV, Kawachi I. The local food environment and diet: A systematic review. Health Place. 2012;18:1172–87.View ArticlePubMedPubMed CentralGoogle Scholar
- Larson N, Story M, Nelson M. Neighborhood environments disparities in access to healthy foods in the US. Am J Prev Med. 2009;36:74–81.View ArticlePubMedGoogle Scholar
- Zenk S, Lachance L, Schultz A, Mentz G, Kannan S, Ridella W. Neighborhood Retail Food Environment and Fruit and Vegetable Intake in a Multiethnic Urban Population. Am J Health Promot. 2009;23:255–64.View ArticlePubMedPubMed CentralGoogle Scholar
- Bodor JN, Rose D, Farley TA, Swalm C, Scott SK. Neighbourhood fruit and vegetable availability and consumption: the role of small food stores in an urban environment. Public Health Nutr. 2008;11:413–20.View ArticlePubMedGoogle Scholar
- Pearson T, Russell J, Campbell MJ, Barker ME. Do “food deserts” influence fruit and vegetable consumption?--A cross-sectional study. Appetite. 2005;45:195–7.View ArticlePubMedGoogle Scholar
- Cannuscio CC, Tappe K, Hillier A, Buttenheim A, Karpyn A, Glanz K. Urban Food Environments and Residents’ Shopping Behaviors. Am J Prev Med. 2013;45:606–14.View ArticlePubMedGoogle Scholar
- Lucan SC, Seitchick J, Yoon DH, Sperry L, Maroko A. Unexpected businesses may improve food environments in urban neighborhoods. Chicago: Presented at the American Public Health Association Annual Meeting; 2015.Google Scholar
- Lucan SC, Maroko A, Shanker R, Jordan WB. Green Carts (mobile produce vendors) in the Bronx--optimally positioned to meet neighborhood fruit-and-vegetable needs? J. Urban Health. 2011;88:977–81.View ArticlePubMedPubMed CentralGoogle Scholar
- Cannuscio CC, Weiss EE, Asch DA. The Contribution of Urban Foodways to Health Disparities. J. Urban Health. 2010;87:381–93.View ArticlePubMedPubMed CentralGoogle Scholar
- Fish CA, Brown JR, Quandt SA. African American and Latino Low Income Families’ Food Shopping Behaviors: Promoting Fruit and Vegetable Consumption and Use of Alternative Healthy Food Options. J Immigr Minor Health. 2015;17:498–505.View ArticlePubMedPubMed CentralGoogle Scholar
- Pitts SBJ, Bringolf KR, Lawton KK, McGuirt JT, Wall-Bassett E, Morgan J, et al. Formative Evaluation for a Healthy Corner Store Initiative in Pitt County, North Carolina: Assessing the Rural Food Environment, Part 1. Prev Chronic Dis. 2013 [cited 2014 Oct 16];10. Available from: http://www.cdc.gov/pcd/issues/2013/12_0318.htm
- Borradaile KE, Sherman S, Vander Veur SS, McCoy T, Sandoval B, Nachmani J, et al. Snacking in children: the role of urban corner stores. Pediatrics. 2009;124:1293–8.View ArticlePubMedGoogle Scholar
- Kiszko K, Cantor J, Abrams C, Ruddock C, Moltzen K, Devia C, et al. Corner Store Purchases in a Low-Income Urban Community in NYC. J Community Health. 2015;40:1084–90.View ArticlePubMedPubMed CentralGoogle Scholar
- Lent MR, Vander Veur SS, McCoy TA, Wojtanowski AC, Sandoval B, Sherman S, et al. A Randomized Controlled Study of a Healthy Corner Store Initiative on the Purchases of Urban, Low-Income Youth. Obesity. 2014;22:2494–500.View ArticlePubMedPubMed CentralGoogle Scholar
- O’Malley K, Gustat J, Rice J, Johnson CC. Feasibility of Increasing Access to Healthy Foods in Neighborhood Corner Stores. J Community Health. 2013;38:741–9.View ArticlePubMedGoogle Scholar
- Dannefer R, Williams DA, Baronberg S, Silver L. Healthy bodegas: increasing and promoting healthy foods at corner stores in New York City. Am J Public Health. 2012;102:e27–31.View ArticlePubMedPubMed CentralGoogle Scholar
- Martin KS, Havens E, Boyle KE, Matthews G, Schilling EA, Harel O, et al. If you stock it, will they buy it? Healthy food availability and customer purchasing behaviour within corner stores in Hartford, CT, USA. Public Health Nutr. 2012;15:1973–8.View ArticlePubMedGoogle Scholar
- Whitehouse A, Simon A, French SA, Wolfson J. Availability of snacks, candy and beverages in hospital, community clinic and commercial pharmacies. Public Health Nutr. 2012;15:1117–23.View ArticlePubMedGoogle Scholar
- Adjoian T, Dannefer R, Sacks R, Van Wye G. Comparing Sugary Drinks in the Food Retail Environment in Six NYC Neighborhoods. J Community Health. 2014;39:327–35.View ArticlePubMedGoogle Scholar
- Farley TA, Baker ET, Futrell L, Rice JC. The Ubiquity of Energy-Dense Snack Foods: A National Multicity Study. Am J Public Health. 2010;100:306–11.View ArticlePubMedPubMed CentralGoogle Scholar
- Caspi CE, Pelletier JE, Harnack L, Erickson DJ, Laska MN. Differences in healthy food supply and stocking practices between small grocery stores, gas-marts, pharmacies and dollar stores. Public Health Nutr. 2015:1–8.Google Scholar
- Laska MN, Caspi CE, Pelletier JE, Friebur R, Harnack LJ. Lack of healthy food in small-size to mid-size retailers participating in the Supplemental Nutrition Assistance Program, Minneapolis-St. Paul, Minnesota, 2014. Prev Chron Dis. 2015;12:E135.Google Scholar
- Stern D, Ng SW, Popkin BM. The Nutrient Content of U.S. Household Food Purchases by Store Type. Am J Prev Med. 2016;50:180–90.View ArticlePubMedGoogle Scholar
- Caspi CE, Lenk K, Pelletier JE, Barnes TL, Harnack L, Erickson DJ, et al. Food and beverage purchases in corner stores, gas-marts, pharmacies and dollar stores. Public Health Nutr. in press.Google Scholar
- Ruff RR, Akhund A, Adjoian T. Small Convenience Stores and the Local Food Environment: An Analysis of Resident Shopping Behavior Using Multilevel Modeling. Am J Health Promot. 2016;30:172–80.View ArticlePubMedGoogle Scholar
- Bodor JN, Ulmer VM, Dunaway LF, Farley TA, Rose D. The Rationale behind Small Food Store Interventions in Low-Income Urban Neighborhoods: Insights from New Orleans. J Nutr. 2010;140:1185–8.View ArticlePubMedPubMed CentralGoogle Scholar
- Gittelsohn J, Rowan M, Gadhoke P. Interventions in Small Food Stores to Change the Food Environment, Improve Diet, and Reduce Risk of Chronic Disease. Prev Chronic Dis. 2012;9:110015.Google Scholar
- Powell L, Slater S, Mirtcheva D, Bao Y, Chaloupka F. Food store availability and neighborhood characteristics in the United States. Prev Med. 2007;44:189–95.View ArticlePubMedGoogle Scholar
- D’Angelo H, Suratkar S, Song H-J, Stauffer E, Gittelsohn J. Access to food source and food source use are associated with healthy and unhealthy food-purchasing behaviours among low-income African-American adults in Baltimore City. Public Health Nutr. 2011;14:1632–9.View ArticlePubMedGoogle Scholar
- Lee, Medina, Regan, Reese-Smith, Jokura, Maddock. A Picture of the Healthful Food Environment in Two Diverse Urban Cities. Environ Health Insights. 2010;4:49-60.Google Scholar
- Zenk SN, Powell LM, Rimkus L, Isgor Z, Barker DC, Ohri-Vachaspati P, et al. Relative and absolute availability of healthier food and beverage alternatives across communities in the United States. Am J Public Health. 2014;104:2170–8.View ArticlePubMedPubMed CentralGoogle Scholar
- Cavanaugh E, Mallya G, Brensinger C, Tierney A, Glanz K. Nutrition environments in corner stores in Philadelphia. Prev Med. 2013;56:149–51.View ArticlePubMedGoogle Scholar
- Laska MN, Borradaile KE, Tester J, Foster GD, Gittelsohn J. Healthy food availability in small urban food stores: a comparison of four US cities. Public Health Nutr. 2010;13:1031–5.View ArticlePubMedGoogle Scholar
- Gittelsohn J, Kumar MB. Preventing childhood obesity and diabetes: is it time to move out of the school? Pediatr Diabetes. 2007;8:55–69.View ArticlePubMedGoogle Scholar
- Sharkey JR, Dean WR, Nalty C. Convenience Stores and the Marketing of Foods and Beverages Through Product Assortment. Am J Prev Med. 2012;43:S109–15.View ArticlePubMedGoogle Scholar
- Gebauer H, Laska MN. Convenience stores surrounding urban schools: an assessment of healthy food availability, advertising, and product placement. J Urban Health. 2011;88:616–22.View ArticlePubMedPubMed CentralGoogle Scholar
- Laska MN, Hearst MO, Forsyth A, Pasch KE, Lytle L. Neighbourhood food environments: are they associated with adolescent dietary intake, food purchases and weight status? Public Health Nutr. 2010;13:1757–63.View ArticlePubMedPubMed CentralGoogle Scholar
- Morland K, Roux A, Wing S. Supermarkets, other food stores, and obesity - The atherosclerosis risk in communities study. Am J Prev Med. 2006;30:333–9.View ArticlePubMedGoogle Scholar
- Morland K, Evenson K. Obesity prevalence and the local food environment. Health Place. 2009;15:491–5.View ArticlePubMedGoogle Scholar
- Wall MM, Larson NI, Forsyth A, Van Riper DC, Graham DJ, Story MT, et al. Patterns of Obesogenic Neighborhood Features and Adolescent Weight A Comparison of Statistical Approaches. Am J Prev Med. 2012;42:E65–75.View ArticlePubMedPubMed CentralGoogle Scholar
- Ayala GX, Laska MN, Zenk SN, Tester J, Rose D, Odoms-Young A, et al. Stocking characteristics and perceived increases in sales among small food store managers/owners associated with the introduction of new food products approved by the Special Supplemental Nutrition Program for Women, Infants, and Children. Public Health Nutr. 2012;15:1771–9.View ArticlePubMedGoogle Scholar
- Lent MR, Veur SV, Mallya G, McCoy TA, Sanders TA, Colby L, et al. Corner store purchases made by adults, adolescents and children: items, nutritional characteristics and amount spent. Public Health Nutr. 2015;18:1706–12.View ArticlePubMedGoogle Scholar
- Andreyeva T, Middleton AE, Long MW, Luedicke J, Schwartz MB. Food retailer practices, attitudes and beliefs about the supply of healthy foods. Public Health Nutr. 2011;14:1024–31.View ArticlePubMedGoogle Scholar
- Glanz K, Bader MDM, Iyer S. Retail Grocery Store Marketing Strategies and Obesity An Integrative Review. Am J Prev Med. 2012;42:503–12.View ArticlePubMedGoogle Scholar
- Barker D, Quinn C, Rimkus L, Mineart C, Zenk S, Chaloupka F. Availability of Healthy Food Products at Check-out Nationwide, 2010–2012. Bridging the Gap Program, Health Policy Center, Institute for Health Research and Policy, University of Illinois at Chicago. 2015. Available from: http://www.bridgingthegapresearch.org/_asset/821r1p/BTG_healthy_checkout_brief_Nov2015.pdf
- Gittelsohn J, Laska MN, Karpyn A, Klingler K, Ayala GX. Lessons Learned From Small Store Programs to Increase Healthy Food Access. Am J Health Behav. 2014;38:307–15.View ArticlePubMedPubMed CentralGoogle Scholar
- Sigurdsson V, Larsen NM, Gunnarsson D. Healthy Food Products at the Point of Purchase: An in-Store Experimental Analysis. J Appl Behav Anal. 2014;47:151–4.View ArticleGoogle Scholar
- Ayala GX, Baquero B, Pickrel JL, Mayer J, Belch G, Rock CL, et al. A store-based intervention to increase fruit and vegetable consumption: The El Valor de Nuestra Salud cluster randomized controlled trial. Contemp Clin Trials. 2015;42:228–38.View ArticlePubMedPubMed CentralGoogle Scholar
- Liberato SC, Bailie R, Brimblecombe J. Nutrition interventions at point-of-sale to encourage healthier food purchasing: a systematic review. BMC Public Health. 2014;14:919.View ArticlePubMedPubMed CentralGoogle Scholar
- Song H-J, Gittelsohn J, Kim M, Suratkar S, Sharma S, Anliker J. A corner store intervention in a low-income urban community is associated with increased availability and sales of some healthy foods. Public Health Nutr. 2009;12:2060–7.View ArticlePubMedPubMed CentralGoogle Scholar
- Gittelsohn J, Song H-J, Suratkar S, Kumar MB, Henry EG, Sharma S, et al. An Urban Food Store Intervention Positively Affects Food-Related Psychosocial Variables and Food Behaviors. Health Educ Behav. 2010;37:390–402.View ArticlePubMedGoogle Scholar
- Laska MN, Pelletier JE. Minimum Stocking Levels and Marketing Strategies of Healthful Foods for Small Retail Food Stores. Minneapolis, MN: Healthy Eating Research; 2016 Feb. Report No.: 1088. Available from: http://healthyeatingresearch.org/wp-content/uploads/2016/02/her_minimum_stocking_final.pdf
- Minneapolis Staple Foods Ordinance. [cited 2016 Apr 28]. Available from: http://www.minneapolismn.gov/health/living/eating/staple-foods
- Pelletier JE, Caspi CE, Schreiber LRN, Erickson DJ, Harnack L, Laska MN. Successful customer intercept interview recruitment outside small and midsize urban food retailers. BMC Public Health. 2016;16:1050.View ArticlePubMedPubMed CentralGoogle Scholar
- Andreyeva T, Luedicke J, Middleton AE, Long MW, Schwartz MB. Positive Influence of the Revised Special Supplemental Nutrition Program for Women, Infants, and Children Food Packages on Access to Healthy Foods. J Acad Nutr Diet. 2012;112:850–8.View ArticlePubMedGoogle Scholar
- Elizabeth Frazão. USDA Economic Research Service - Fruit and Vegetable Prices. [cited 2016 Aug 5]. Available from: http://ers.usda.gov/data-products/fruit-and-vegetable-prices.aspx
- USDA Nutrient Data Services. [cited 2016 Aug 5]. Available from: http://www.ars.usda.gov/Services/docs.htm?docid=23617
- Ghirardelli A, Quinn V, Sugerman S. Reliability of a Retail Food Store Survey and Development of an Accompanying Retail Scoring System to Communicate Survey Findings and Identify Vendors for Healthful Food and Marketing Initiatives. J Nutr Educ Behav. 2011;43:S104–12.View ArticlePubMedGoogle Scholar
- Barnes TL, Pelletier JE, Erickson DJ, Caspi CE, Harnack LJ, Laska MN. Healthfulness of Foods Advertised in Small and Nontraditional Urban Stores in Minneapolis-St. Paul, Minnesota, 2014. Prev Chronic Dis. 2016;13:E153.View ArticlePubMedPubMed CentralGoogle Scholar
- Sievert YA, Schakel SF, Buzzard IM. Maintenance of a nutrient database for clinical trials. Control Clin Trials. 1989;10:416–25.View ArticlePubMedGoogle Scholar
- Schakel SF, Sievert YA, Buzzard IM. Sources of data for developing and maintaining a nutrient database. J Am Diet Assoc. 1988;88:1268–71.PubMedGoogle Scholar
- HEI Tools for Researchers. [cited 2017 Jan 31]. Available from: https://epi.grants.cancer.gov/hei/tools.html
- U.S. Department of Agriculture and U.S. Department of Agriculture: Center for Nutrition Policy and Promotion. Healthy Eating Index [Internet]. [cited 2016 Apr 29]. Available from: http://www.cnpp.usda.gov/healthyeatingindex.htm
- Guenther PM, Casavale KO, Reedy J, Kirkpatrick SI, Hiza HAB, Kuczynski KJ, et al. Update of the Healthy Eating Index: HEI-2010. J Acad Nutr Diet. 2013;113:569–80.View ArticlePubMedGoogle Scholar
- Jahns L, Scheett AJ, Johnson LK, Krebs-Smith SM, Payne CR, Whigham LD, et al. Diet Quality of Items Advertised in Supermarket Sales Circulars Compared to Diets of the US Population, as Assessed by the Healthy Eating Index-2010. J Acad Nutr Diet. 2016;116:115–122.e1.View ArticlePubMedGoogle Scholar
- Reedy J, Krebs-Smith SM, Bosire C. Evaluating the food environment: application of the Healthy Eating Index-2005. Am J Prev Med. 2010;38:465–71.View ArticlePubMedGoogle Scholar
- Krebs-Smith SM, Reedy J, Bosire C. Healthfulness of the U.S. Food Supply: Little Improvement Despite Decades of Dietary Guidance. Am J Prev Med. 2010;38:472–7.View ArticlePubMedPubMed CentralGoogle Scholar
- Miller PE, Reedy J, Kirkpatrick SI, Krebs-Smith SM. The United States food supply is not consistent with dietary guidance: evidence from an evaluation using the Healthy Eating Index-2010. J Acad Nutr Diet. 2015;115:95–100.View ArticlePubMedGoogle Scholar
- Hearst MO, Harnack LJ, Bauer KW, Earnest AA, French SA, Michael OJ. Nutritional quality at eight U.S. fast-food chains: 14-year trends. Am J Prev Med. 2013;44:589–94.View ArticlePubMedGoogle Scholar
- Volpe R, Okrent A. Assessing the Healthfulness of Consumers’ Grocery Purchases. Unites States Department of Agriculture; 2012 Nov. Available from: https://www.ers.usda.gov/webdocs/publications/43680/33405_eib102.pdf?v=41263
- Ortega AN, Albert SL, Sharif MZ, Langellier BA, Garcia RE, Glik DC, et al. Proyecto MercadoFRESCO: A Multi-level, Community-Engaged Corner Store Intervention in East Los Angeles and Boyle Heights. J Community Health. 2015;40:347–56.View ArticlePubMedPubMed CentralGoogle Scholar
- Clary CM, Ramos Y, Shareck M, Kestens Y. Should we use absolute or relative measures when assessing foodscape exposure in relation to fruit and vegetable intake? Evidence from a wide-scale Canadian study. Prev Med. 2015;71:83–7.View ArticlePubMedGoogle Scholar
- Zenk SN, Powell LM, Rimkus L, Isgor Z, Barker DC, Ohri-Vachaspati P, et al. Relative and Absolute Availability of Healthier Food and Beverage Alternatives Across Communities in the United States. Am J Public Health. 2014;104:2170–8.View ArticlePubMedPubMed CentralGoogle Scholar
- Lawman HG, Veur SV, Mallya G, McCoy TA, Wojtanowski A, Colby L, et al. Changes in quantity, spending, and nutritional characteristics of adult, adolescent and child urban corner store purchases after an environmental intervention. Prev Med. 2015;74:81–5.View ArticlePubMedGoogle Scholar
- Webber CB, Sobal J, Dollahite JS. Shopping for fruits and vegetables. Food and retail qualities of importance to low-income households at the grocery store. Appetite. 2010;54:297–303.View ArticlePubMedGoogle Scholar
- Krukowski RA, McSweeney J, Sparks C, West DS. Qualitative study of influences on food store choice. Appetite. 2012;59Google Scholar
- Krukowski RA, Sparks C, DiCarlo M, McSweeney J, West DS. There’s more to food store choice than proximity: a questionnaire development study. BMC Public Health. 2013;13:586.View ArticlePubMedPubMed CentralGoogle Scholar
- Enhancing Retailer Standards in the Supplemental Nutrition Assistance Program (SNAP) | Food and Nutrition Service. [cited 2016 Aug 5]. Available from: http://www.fns.usda.gov/fr-021716