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RESEARCH AND PRACTICE |
Carol R. Horowitz and Paul L. Hebert are with the Department of Health Policy, Mount Sinai School of Medicine, New York, NY. Carol R. Horowitz is also with, and Kathryn A. Colson, and Kristie Lancaster are with the East Harlem Diabetes Center of Excellence, New York. Carol R. Horowitz is also with the Department of Medicine, Mount Sinai School of Medicine. Kathryn A. Colson is also with the Center for Organizational and Leadership Effectiveness, New York Presbyterian Hospital, New York. Kristie Lancaster is also with the Division of Nutrition, New York University School of Medicine, New York.
Correspondence: Requests for reprints should be sent to Carol Horowitz, MD, MPH, Mt Sinai School of Medicine, 1425 Madison Ave, New York City, NY 10029 (e-mail: carol.horowitz{at}mountsinai.org).
| ABSTRACT |
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Objectives. A community coalition compared the availability and cost of diabetes-healthy foods in a racial/ethnic minority neighborhood in East Harlem, with those in the adjacent, largely White and affluent Upper East Side in New York City.
Methods. We documented which of 173 East Harlem and 152 Upper East Side grocery stores stocked 5 recommended foods.
Results. Overall, 18% of East Harlem stores stocked recommended foods, compared with 58% of stores in the Upper East Side (P < .0001). Only 9% of East Harlem bodegas (neighborhood stores) carried all items (vs 48% of Upper East Side bodegas), though East Harlem had more bodegas. East Harlem residents were more likely than Upper East Side residents (50% vs 24%) to have stores on their block that did not stock recommended foods and less likely (26% vs 30%) to have stores on their block that stocked recommended foods.
Conclusions. A greater effort needs to be made to make available stores that carry diabetes-healthy foods.
| INTRODUCTION |
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Diabetes may disproportionately affect residents of communities of color, such as East Harlem in New York City. East Harlems population, which is 50% Latino and 40% African American,9 faces both limited resources and a disproportionate burden of chronic diseases, including diabetes. In East Harlem, nearly one third of adults and half of children live in poverty, and residents have the highest prevalence of obesity and the highest all-cause death rate in New York City. The prevalence of diabetes in East Harlem is nearly double that in New York City overall.4 Among people with diabetes, mortality and hospitalization rates in East Harlem are nearly double those of New York City as a whole.10 The rate of hospitalizations for diabetes-related amputations among persons aged 65 years and older in East Harlem is nearly 5 times the rate in New York City overall.11
Diet is an integral part of the treatment of diabetes and maintenance of glycemic control. The American Diabetes Association recommends that people with diabetes consume a diet low in fat and high in fiber-containing foods such as fruits, vegetables, and whole grains. The American Diabetes Association also recommends substitution of diet soft drinks and "lite" breads to reduce carbohydrate and calorie intake while allowing patients to enjoy their preferred foods.12,13 The availability of these and other recommended foods in neighborhood food stores may influence the food choices of African American and Latino adults with diabetes.14 Evidence exists that foods recommended as part of a healthy diabetic diet are in short supply in low-income, non-White neighborhoods such as East Harlem. In 2002, researchers found more supermarkets overall in White, compared with African American, neighborhoods and a positive association between fruit and vegetable intake and number of supermarkets in African American neighborhoods.15,16 In addition, the availability of low-fat milk is not as prevalent in stores in non-White neighborhoods in New York State.17,18
In 1998, a community-centered coalition of health providers, community advocates, and researchers formed the East Harlem Diabetes Center of Excellence to examine and improve care for persons with diabetes living in East Harlem.19 The coalition surveyed 939 adults who live in and receive care for diabetes in East Harlem. Results of the survey showed that 40% of respondents did not follow a diabetic diet because of financial concerns. In addition to these findings, coalition partners and community members repeatedly stated that diabetes-healthy foods are less available or more expensive in many East Harlem groceries, especially in comparison with neighboring nonminority communities. The coalition therefore shifted its attention from individual patients in clinical settings to patients local food environments. Through this new focus, coalition partners joined the ranks of groups working to address community-level risk factors for obesity and suboptimal dietary practices and choices by linking science and community action.2023
To better understand the environmental barriers people with diabetes face in attempting to consume a healthy diet, we conducted a food availability survey. The purpose of this survey was to document and compare the availability and cost of foods recommended for people with diabetes in East Harlem and the adjacent, more affluent, and predominantly White Upper East Side neighborhood. Although these 2 neighborhoods are adjacent, East Harlem is 6% White, whereas the Upper East Side is 84% White. East Harlem has one of the lowest median household incomes in New York City; the Upper East Side has the highest.9 East Harlem has the highest prevalence of diabetes and obesity and the highest diabetes hospitalization rate in New York City; the Upper East Side has the lowest percentages in all 3 categories (Table 1
).4,10
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| METHODS |
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We used a database of stores (not restaurants) inspected and licensed to sell food by the New York State Department of Agriculture and Markets to identify food stores in both neighborhoods. This database included the addresses of stores and the number of cash registers per store. We labeled stores with 1 register as small stores or bodegas. Stores with 2 to 4 registers were categorized as medium-sized stores, and those with more than 4 registers were considered large.
Dietetic interns and local outreach workers volunteered to conduct the surveys. All surveyors received 6 hours of training in conducting the survey; to provide field training, interns and volunteers were accompanied by the senior surveyor to several ineligible stores not included in the study. In pairs, surveyors visited every store in the database, introduced themselves to store managers, stated the purpose of the survey, and provided a letter about the study for the stores records and a shirt with diabetes messages designed by a local artist for the store manager. Surveyors independently documented the presence of the foods of interest and the lowest price for each category of food or beverage. They did not collect prices on fruits or vegetables. If prices were not available on or near the food item, surveyors asked the store manager for the price. The surveyors also verified that the number of cash registers in each store was consistent with information in the New York State database. Surveyors compared observations with their partners, recorded discrepancies, and resolved them together while at the store. At the end of every day of surveying, the project manager and a senior surveyor reviewed all data collected by the survey teams. We used the data recorded before the discrepancies were resolved to calculate interrater reliability for all stores. We found reliability to be excellent, with
scores ranging from 0.94 to 1.
| DATA ANALYSIS |
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2 tests to assess differences in the prevalence of desirable and undesirable stores by neighborhood and by store size. MannWhitney (Wilcoxon) nonparametric, rank-sum tests were used to assess differences in prices by neighborhood. We used data from the 2000 census to map each store to the US census block (the smallest unit of tabulation for the census) on which it was located.24 In these 2 neighborhoods under study, a census block is roughly equivalent to 1 square city block. For blocks with lower population densities, 2 or more city blocks may form a census block. We then obtained census information on the total population living in each census block and determined the percentage of the population in each neighborhood living in census blocks that contained selected combinations of desirable and undesirable stores. Although we used a census of the totality of stores and people in the 2 communities, the P values and confidence intervals for all percentages are identical to those we would have obtained if we had drawn an equivalently sized sample from a larger population. All analyses were conducted with SAS version 8e (SAS Institute Inc, Cary, NC).
| RESULTS |
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Table 3
shows that significantly more Upper East Side residents than East Harlem residents lived on a block with at least 1 desirable store (30% vs 26%; RR = 1.2). Many more Upper East Side residents lived on a block with only desirable stores than did East Harlem residents (22% vs 9%; RR = 2.5). Furthermore, Upper East Side residents were only half as likely as East Harlem residents to live on a block with at least 1 undesirable store (24% vs 50%; RR = 0.5) or with only undesirable stores (19% vs 35%; RR = 0.5). Upper East Side residents also were more likely to live on a block with no store at all (51% vs 39%; RR = 1.3)
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| DISCUSSION |
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East Harlem has more than twice the number of food stores per capita as the Upper East Side. However, only 18% of East Harlem stores carried all 5 recommended food items, compared with 58% of Upper East Side stores. Medium-sized and large stores in the 2 neighborhoods were equally likely to carry recommended foods; disparities in food availability were most pronounced in small stores or bodegas. East Harlem had significantly more bodegas, and East Harlem bodegas were substantially less likely than Upper East Side bodegas to carry all 5 food items. Although Morland et al. found that the presence of small grocery stores showed little association with diets reported by African Americans,16 their study might describe phenomena in areas where the population is less concentrated (i.e., nonurban). Small stores are conveniently located. A study of sociodemographic factors and taste, nutrition, cost, and convenience of dietary choices found that convenience was most important to non-Whites and people with lower incomes.25
In densely populated inner-city areas, bodegas may not only be conveniently located, but also may contribute to residents comfort level. Community leaders suggest that in some neighborhoods, people shop in bodegas because they are comfortable frequenting a familiar place, and they may be able to shop with informal credit that they or a family member can pay back over time. It is possible that persons affected by chronic illnesses such as diabetes, those who have difficulty walking even a few blocks, and those who need to quickly pick up a few essential items may choose to "go downstairs" to a bodega for staples such as bread and milkhealthier versions of which were less commonly available in East Harlem stores. Future researchers need to evaluate the connection between small stores and food consumption in inner-city neighborhoods and the relative contributions of store supply and consumer demand to the availability of healthier foods. Community, policy, research, and clinical leaders need to understand these connections to improve the diets of inner-city residents by taking into account the food environment.
Interesting differences between the neighborhoods emerged when we compared percentages of residents living on a census block that contains desirable or undesirable stores. It is encouraging that East Harlem residents can find desirable stores in their neighborhood, especially if they seek out medium-sized and larger stores. Although people in the Upper East Side are only 20% more likely than those in East Harlem to live on a block with a desirable store, East Harlem residents have fewer stores at which they can find the recommended foods. East Harlem residents also are disproportionately exposed to undesirable stores. Persons living in the Upper East Side are twice as likely as East Harlem residents to have only desirable food stores on their blocks. East Harlem residents are twice as likely to be limited to undesirable food stores on their block. Persons shopping for diabetes-healthy foods in East Harlem are 2 times more likely than their Upper East Side neighbors to have more undesirable than desirable stores to choose from on their blocks. Therefore, East Harlem residents need to take the following steps to procure diabetes-healthy foods: (a) become familiar with which food items (such as low-fat milk) are healthier, (b) recognize that many of their neighborhood stores do not carry these foods and forgo shopping at these undesirable stores, (c) be aware that other stores may offer healthier food choices, and (d) shop at these desirable stores instead.
Contrary to our expectations, food items included in the survey were less costly in East Harlem than in the Upper East Side. However, because the median household income in the Upper East Side is nearly 4 times that in East Harlem, residents of East Harlem may still face significant financial barriers when shopping for foods. An earlier survey by the coalition found that 77% of persons with diabetes in East Harlem had an annual income of less than $20 000. Many of these persons did not follow a diabetic diet because of concerns about money, and this behavior was independently associated with poorer health status.19
This study has several limitations. First, although we chose 5 commonly recommended food items that often are readily available in stores, no standard diabetic diet exists. Second, we did not measure the quantity, quality, or placement of foods on store shelves, factors that may have differed between the 2 communities. Third, we do not have data to associate availability of food items with consumption of those items, although others have demonstrated such a correlation.16,17,26 Fourth, because some census blocks are larger than a geographic block, some of our estimates of store locations in relation to population density may encompass more than 1 neighborhood block. Fifth, we measured the percentage of the population that lived on a census block with a desirable or undesirable store. People who lived across the street from such stores would have similar access to foods but might not live on the same census block as those stores.
The lower percentage of stores selling basic low-fat, high-fiber, low-carbohydrate, and low-calorie food items in East Harlem may explain sociocultural disparities in diet and overweight found in other research.18 These findings also point to one reason that African Americans and Latinos may not be as successful as the general population in following the American Diabetes Association and other dietary recommendations. In comparison with food-sufficient, White, and more affluent persons, adults from food-insufficient families, African Americans, and the poor are more likely to have diets higher in fat and lower in fiber, fruits, and vegetables. 2730 African Americans and Latinos are more likely to be obese compared with Whites,2 and women in food-insecure households are more likely to be obese than those in food-secure households, even after income and education are controlled.31 African Americans with uncontrolled diabetes have higher intakes of calories and lower intakes of fiber compared with their White counterparts.32 Consumers with limited financial resources and insufficient education about nutritionally appropriate, affordable, accessible foods may find it difficult to maintain a healthy diet.
Our coalition used the principles of community-centered research to develop a collaborative project and to engage community residents in the research from its inception through dissemination of its findings.33 Community coalition members recommended the idea of this study, helped develop the survey tool and methods, served as partners in data collection, posed the key questions for data analysis, and, on the basis of answers to these questions, took specific actions. The coalition first shared the data with local clinician and community groups at multiple interactive meetings to inform the groups about the local food environment and to solicit concrete suggestions for interventions. From these suggestions, the coalition began to educate clinicians about food availability through in-service training at health care sites in East Harlem. During these sessions, we suggested that clinicians ask patients whether they have had any trouble finding or buying the foods the clinicians recommend and that if patients acknowledge such difficulties, clinicians encourage patients either to shop at larger supermarkets or to substitute other diabetes-healthy foods that are more widely available. Coalition members are collaborating with community and business leaders to explore ways to create more desirable stores and are working with residents to increase the demand for diabetes-healthy foods. The coalition members planned and conducted focus groups to better understand where people shop for food and why. This information will be used to develop patient-centered interventions, including peer-led nutrition courses. We also formed a local nutrition consortium of clinicians, food-store owners and distributors, emergency food workers (such as food pantry leaders), and other local food and nutrition stakeholders to discuss our findings and plan strategies to increase the availability of diabetes-healthy foods.
Finally, we have disseminated information locally and nationally to help other neighborhood coalitions learn to collect data on food availability and to organize demonstration projects. Projects under way include providing diabetes-healthy foods and nutrition advice at street festivals, bringing farm-fresh produce to bodegas, and teaching high school students to recognize, map, and share information about diabetes-healthy stores in their area with peers and neighbors. Other communities may want to form nutrition consortiums that can spearhead interventions tailored to their local circumstances. These interventions may include promoting public recognition of desirable stores and influencing distributors or store owners to carry diabetes-healthy foods in exchange for a commitment to direct consumer traffic to those stores.
| CONCLUSIONS |
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| Acknowledgments |
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Human Participant Protection
The research protocol was reviewed and approved by the Mt Sinai School of Medicine institutional review board.
| Footnotes |
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Accepted for publication July 8, 2003.
| References |
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