Effect of a Multicomponent Food Pantry Intervention in Client Subgroups

Nutrition promotion programs may have varying effects and influence health disparities. SuperShelf promotes healthy choices in food pantries through inventory changes and nudge implementation (e.g., choice architecture). This secondary analysis of the SuperShelf cluster-randomized trial assessed whether the effect of SuperShelf on client diet quality differed by equity characteristics. English-, Spanish-, or Somali-speaking adult clients from 11 food pantries in Minnesota were included (N = 193). We measured change in diet quality by the Healthy Eating Index 2015 (HEI-2015; maximum score 100) using up to two 24 h dietary recalls from pre-intervention and post-intervention periods. We used linear mixed-effects models to determine whether the effect of SuperShelf on diet quality varied by self-reported gender, race/ethnicity, education, and employment status. In separate adjusted models, the interactions of SuperShelf and gender, education, or employment status were not significant. The interaction of SuperShelf and race/ethnicity was significant (p-interaction = 0.008), but pairwise comparisons in diet quality were non-significant in all racial/ethnic subgroups. SuperShelf did not have differential effects on diet quality by gender, race/ethnicity, education, or employment status, suggesting it does not worsen dietary disparities among food pantry clients, though more subgroup analyses are needed to explore potential racial/ethnic disparities in this context.

Examining Changes in Food Security, Perceived Stress, and Dietary Intake in a Cohort of Low-Wage Workers Experiencing an Increase in Hourly Wage

OBJECTIVE

To determine whether an increase in hourly wages was associated with changes in food security and perceived stress among low-wage workers. We also determined whether changes in food security and stress were associated with changes in diet.

SETTING

Wages is a prospective cohort study following 974 low-wage workers in Minneapolis, MN, where an ordinance is incrementally increasing minimum wage to US$15/hr from 2018 to 2022, and a comparison community with no minimum wage ordinance (Raleigh, NC). Interaction models were estimated using generalized estimating equations.

PARTICIPANTS

Analyses used two waves of data (2018 [baseline], 2019) and included 219 and 321 low-wage workers in Minneapolis and Raleigh (respectively).

RESULTS

Average hourly wages increased from US$9.77 (SD US$1.69) to US$11.67 (SD US$4.02). Changes in wages were not associated with changes in food security (odds ratio = 1.05, 95% confidence interval [CI] [0.89, 1.23], p = .57) or stress (β = -0.01, 95% CI [-0.04, 0.03], p = .70) after 1 year of policy implementation. Changes in food security were not associated with changes in diet. However, we found significant changes in the frequency of fruit and vegetable intake across time by levels of stress, with decreased intake from Wave 1 to 2 at low levels of stress, and increased intake at high levels of stress (incidence rate ratio = 1.17, 95% CI [1.05, 1.31], p = .01).

CONCLUSIONS

Changes in wages were not associated with changes in food security or stress in a sample of low-wage workers. Future research should examine whether full implementation of a minimum wage increase is associated with changes in these outcomes.

A Cluster-Randomized Evaluation of the SuperShelf Intervention in Choice-Based Food Pantries

BACKGROUND

Interventions in food pantry settings have the potential to improve health among clients at risk of diet-related disease.

PURPOSE

This study evaluates whether a cluster-randomized, behavioral intervention in food pantries resulted in improved client outcomes.

METHODS

Sixteen Minnesota food pantries were randomized to an intervention (n = 8) or control condition (n = 8). The intervention offered pantries technical assistance to improve healthy food supply and implement behavioral economics strategies to promote healthy food selection. A convenience sample of adult clients were enrolled (paired sample, 158 intervention, 159 control) and followed for 1 year. Additional clients were enrolled at follow-up to assess food selection (follow-up sample, 85 intervention, 102 control). Analysis was limited to data from 11 pantries (5 intervention, 6 control) due to COVID-19. Outcome measures included Healthy Eating Index-2015 (HEI-2015) total and subcomponent scores for 24-hr dietary recalls and client cart selections, and Life's Simple 7 (LS7) total and subcomponent scores. Multilevel mixed-effects models tested whether client outcomes differed by intervention condition.

RESULTS

In adjusted models, there were no statistically significant differences by intervention condition in HEI-2015 or LS7 scores. Clients in intervention food pantries had improved Refined Grain subcomponent scores (p = .004); clients in control pantries had worsened Saturated Fat subcomponents scores (p = .019) and improved physical activity scores (p = .007).

CONCLUSIONS

The intervention did not result in improved diet quality or cardiovascular health as measured by HEI-2015 or LS7. Coordinated efforts across settings are needed to address health risks facing this population.

Construct validity of the Charitable Food Nutrition Index

Background

Food pantries are an important source of food for those facing food insecurity. The Charitable Food Nutrition Index (CFNI) was developed for research and practice to measure the nutritional quality of assortments of foods in this setting.

Objective

The study assessed the construct validity of the CFNI using secondary data from a group-randomized food pantry intervention in Minnesota.

Methods

The CFNI was calculated for each client cart post-intervention (n = 187; 85 intervention, 102 control). CFNI scores were based on the proportion of items in each client cart ranked "green," "yellow," or "red" using the Healthy Eating Research Nutrition Guidelines for the Charitable Food System. An implementation score assessing intervention fidelity was measured for each pantry (n = 11; 5 intervention, 6 control) based on the four intervention subcomponents: aesthetics/use of space; healthy food prominence and appeal; unhealthy food de-emphasis; and stocking standards. Mixed linear models were used to test whether: (a) client carts from pantries in the intervention condition had higher CFNI scores than those in the control condition, and (b) higher implementation scores were associated with higher CFNI scores.

Results

In adjusted models, clients from intervention group pantries had higher CFNI scores, reflecting a healthier assortment of foods compared with clients from control group pantries (p = 0.022). CFNI scores were positively associated with greater fidelity to the intervention (p = 0.020).

Conclusions

The CFNI was sensitive enough to detect the effects of the intervention in the expected directions. These findings support its construct validity and utility as a measure in the charitable food system.

Early results of a natural experiment evaluating the effects of a local minimum wage policy on the diet-related health of low-wage workers, 2018-2020

OBJECTIVE

The current study presents results of a midpoint analysis of an ongoing natural experiment evaluating the diet-related effects of the Minneapolis Minimum Wage Ordinance, which incrementally increases the minimum wage to $15/h.

DESIGN

A difference-in-difference (DiD) analysis of measures collected among low-wage workers in two U.S. cities (one city with a wage increase policy and one comparison city). Measures included employment-related variables (hourly wage, hours worked and non-employment assessed by survey questions with wages verified by paystubs), BMI measured by study scales and stadiometers and diet-related mediators (food insecurity, Supplemental Nutrition Assistance Program (SNAP) participation and daily servings of fruits and vegetables, whole-grain rich foods and foods high in added sugars measured by survey questions).

SETTING

Minneapolis, Minnesota and Raleigh, North Carolina.

PARTICIPANTS

A cohort of 580 low-wage workers (268 in Minneapolis and 312 in Raleigh) who completed three annual study visits between 2018 and 2020.

RESULTS

In DiD models adjusted for time-varying and non-time-varying confounders, there were no statistically significant differences in variables of interest in Minneapolis compared with Raleigh. Trends across both cities were evident, showing a steady increase in hourly wage, stable BMI, an overall decrease in food insecurity and non-linear trends in employment, hours worked, SNAP participation and dietary outcomes.

CONCLUSION

There was no evidence of a beneficial or adverse effect of the Minimum Wage Ordinance on health-related variables during a period of economic and social change. The COVID-19 pandemic and other contextual factors likely contributed to the observed trends in both cities.

Food Pantry Clients' Needs, Preferences, and Recommendations for Food Pantries: A Qualitative Study

A qualitative formative approach was used to explore food pantry clients' needs, preferences, and recommendations regarding food received from food pantries. Fifty adult clients of six Arkansas food pantries were interviewed in English, Spanish, or Marshallese. Data analysis used the constant comparative qualitative methodology. In choice and minimal choice pantries, three themes emerged: clients need increased quantities of food, particularly more proteins and dairy; clients desire higher quality food, including healthy food and food not close to expiration; and clients desire familiar foods and food appropriate for their health needs. System level policy changes are needed to address clients' recommendations.

Food Pantry Usage Patterns are Associated with Client Sociodemographics and Health

Characterizing food pantry (FP) clients' FP usage patterns may provide opportunities to tailor health-related interventions. Respondents (n=245) at seven FPs reported their frequency and reliance on FPs and their sociodemographics, health status, and health-related trade-offs. Clients were categorized via latent class analysis. Higher FP usage was associated with being older, having a household member with heart disease, and putting off buying medicine to buy food. Lower FP usage was associated with higher levels of education and having a household member with cancer. Findings highlight the potential importance of measuring FP clients' degree of FP use.

A qualitative analysis of SNAP and minimum wage policies as experienced by workers with lower incomes

Work-related policies, including minimum wage and food assistance work requirements, can affect food security for people with lower incomes. This study conducted 112 qualitative interviews to understand participant policy experiences in two contexts (Raleigh, North Carolina and Minneapolis, Minnesota). Participants experienced frequent, destabilizing changes to their United States Department of Agriculture Supplemental Nutrition Assistance Program benefits, which they identified as part of a broader safety net. Raleigh workers described an unsupportive policy environment; Minneapolis workers reaped few benefits from an ongoing wage increase. Many workers face complex financial tradeoffs; more sophisticated evaluations should consider broader policy contexts and long-range effects.

Applying the Healthy Eating Index-2015 in a Sample of Choice-Based Minnesota Food Pantries to Test Associations Between Food Pantry Inventory, Client Food Selection, and Client Diet

BACKGROUND

Food pantry clients are at a high risk for diet-related chronic disease and suboptimal diet. Relatively little research has examined diet quality measures in choice-based food pantries where clients can choose their own food.

OBJECTIVE

This study tested whether the diet quality scores for food at the pantry were associated with client food selection scores, and whether client food selection scores at the pantry were associated with client diet intake scores.

DESIGN

This cross-sectional regression analysis, part of a larger evaluation study (SuperShelf), used baseline data from client and food pantry surveys, food pantry inventories, assessments of client food selections ("client carts"), and single 24-hour client dietary recalls.

PARTICIPANTS/SETTING

The analysis includes 316 clients who completed a survey (282 of whom completed a dietary recall measure) from one of 16 choice-based Minnesota food pantries during 2018-2019. Adult English, Spanish, or Somali-speaking clients were eligible in the case that they had selected food on the day of recruitment at their food pantry visit.

MAIN OUTCOME MEASURES

A Healthy Eating Index-2015 (HEI-2015) Total score and 13 subcomponent scores were calculated for: pantry food inventories of food available on the shelf, client carts, and a 24-hour client dietary recall.

STATISTICAL ANALYSIS

Descriptive statistics were generated for client and food pantry characteristics, and for HEI-2015 Total score and subcomponent scores. Linear regression models tested the association between HEI-2015 Total score and subcomponent scores for food pantry inventory and client carts, and for client carts and dietary recalls, adjusted for covariates.

RESULTS

Food pantry inventory HEI-2015 Total score averaged 65.1, client cart Total score averaged 60.8, and dietary recall Total score averaged 50.9. The diet quality scores for inventory were not associated with client cart scores, except for Added Sugars (P = .005). Client cart HEI-2015 Total score was positively associated with client diet HEI-2015 Total score (P = .002) and associations for Total Fruits, Whole Fruits, Total Vegetables, Greens and Beans, Whole Grains, Seafood and Plant Proteins, and Added Sugars subcomponents were statistically significant.

CONCLUSIONS

In choice-based Minnesota food pantries, the diet quality of food selected by clients was positively associated with client diet quality.

The lived experience of food pantry users in Minnesota: Qualitative findings from a statewide survey

Objectives

In 2017 a community-University of Minnesota collaborative conducted a statewide survey of food pantry clients.

Methods

Of the 188 food pantries surveyed, 4321 individual client surveys were returned, from which 2,251 open-ended responses were analyzed.

Results

Respondents shared gratitude for the food pantry in meeting their needs for food and support. Many described accessing healthy food that was needed to address health needs. Respondents described life circumstances and hardships that led to food pantry use.

Conclusion

The supportive environment provided by food pantries position them to address the needs of clients, including those with complex health needs.

Needs and Preferences Among Food Pantry Clients

INTRODUCTION

Food pantries serve households in need, including many with a family member with a diet-related chronic disease, yet data on client priorities to inform hunger relief practices are lacking. We used a statewide client survey in Minnesota to determine needs and priorities of food pantry clients in 2017 and 2019 and to identify how well Minnesota pantries met those needs in 2019.

METHODS

Our survey was administered in 2017 and 2019. Food pantries in Minnesota were mailed 25 surveys each, with instructions for administering the surveys anonymously to clients. Descriptive analyses compared 2017 and 2019 data and compared client priorities for foods and services with how often they were available at the pantry in 2019.

RESULTS

The 2017 survey represented 4,321 clients from 188 pantries; the 2019 survey represented 5,529 clients from 220 pantries. Most measures of food pantry use were consistently high across the years; about three-quarters of clients had been visiting the pantry for a year or more. In 2019, 85% of clients said it was important to have fresh fruits and vegetables, but only 52% said these were always available. About two-thirds had a household member with a diet-related chronic disease. The ability to choose their own foods was clients' top priority.

CONCLUSION

The types of food most requested by clients tended to be healthy but were inconsistently available. Most important to clients was being able to choose their own food. Results underscore the need for continued monitoring of client priorities.

A Difference-in-Difference Study Evaluating the Effect of Minimum Wage Policy on Body Mass Index and Related Health Behaviors

Minimum wage laws are a promising policy lever to promote health equity, but few rigorous evaluations have tested whether and how minimum wage policy affects health outcomes. This paper describes an ongoing difference-in-difference study evaluating the health effects of the 2017 Minneapolis Minimum Wage Ordinance, which incrementally increases the minimum wage to $15/hr. We present: (1) the conceptual model guiding the study including mediating mechanisms, (2) the study design, and (3) baseline findings from the study, and (4) the analytic plan for the remainder of the study. This prospective study follows a cohort of 974 low-wage workers over four years to compare outcomes among low-wage workers in Minneapolis, Minnesota, and those in a comparison city (Raleigh, North Carolina). Measures include height/weight, employment paystubs, two weeks of food purchase receipts, and a survey capturing data on participant demographics, health behaviors, and household finances. Baseline findings offer a profile of individuals likely to be affected by minimum wage laws. While the study is ongoing, the movement to increase local and state minimum wage is currently high on the policy agenda; evidence is needed to determine what role, if any, such policies play in improving the health of those affected.

Equity at the ballot box: Health as a resource for political participation among low-income workers in two United States cities

Objective: The purpose of this study is to identify health resources associated with propensity to vote at the local-level among low-wage workers in two United States. cities. Literature confirms individuals of lower income have a lower propensity of turning out to vote, yet few studies have focused on low-income populations to identify the variation in factors associated with voting within this group. Furthermore, few studies have investigated health and voter turnout at the local-level. In this study, we examine factors related to political participation at the local-level within a low-wage sample, examine mental, physical, behavioral, and social health and their association with voter turnout, and assess if these relationships differ by city.

Methods: We use cross-sectional survey data from a sample of 974 low-wage workers in Minneapolis, MN and Raleigh, NC. We computed descriptive statistics and employed a logistic regression to predict their likelihood of local voter turnout, with the key independent variables being health resources, such as self-rated health, body mass index (BMI), mental disability, smoking status, and health insurance status. We employed a logistic regression fully interacted with a city indicator variable to assess if these associations differed by city.

Results: In both cities, less than 50 percent of respondents reported voting in the last election for mayor or city council. About three-quarters of the sample reported food or housing insecurity and the majority of respondents reported utilizing some government assistance, such as supplemental nutrition programs. BMI greater than 30 was significantly associated with lower likelihood of voter turnout compared to those of lower BMI status (marginal effect = −0.10, p = 0.026). Never smoking or quitting was significantly associated with higher likelihood of voter turnout compared to those who reported being a current smoker (marginal effect = 0.10, p = 0.002). Those with health insurance were significantly more likely to report voting compared to those without any insurance (marginal effect = 0.10, p = 0.022). These results did not significantly differ by city.

Conclusions: Our research suggests low-wage workers face significant health burdens which may impact their propensity to vote at the local-level, and these associations do not significantly vary by city despite demographic and political differences between two jurisdictions.

Food shopping, home food availability, and food insecurity among customers in small food stores: an exploratory study

Customers who frequently shop in small food stores (e.g., convenience stores) may face numerous challenges to procuring healthful food for their household, and these may vary by food security status. The purpose of this study is to examine associations between food security and food shopping-related behaviors among frequent shoppers at small stores. Our sample included participants from customer intercept interviews at small food stores in an urban area. A follow-up in-home visit with a subset of customers who reported frequently shopping in these stores (≥1/week; n = 78) included a survey and researcher-administered home food inventory. Food security status was identified via the U.S. Household Food Security Survey Six-Item Short Form. Outcomes included shopping frequency and money spent by store type (e.g., small vs. large), home-to-store distance, and observed home availability of fruits, vegetables, and obesogenic foods. We estimated associations between food security status and each outcome, adjusting for demographic and poverty-related confounders. Participants were 56% female and 65% people of color; 45% received Supplemental Nutrition Assistance Program benefits and 54% experienced food insecurity in the past year. Unadjusted models indicated several significant associations: compared to those who were food secure, food-insecure participants shopped for food/beverages at small stores more times per month, spent more on food/beverages at dollar stores, and had less home availability of fruit and obesogenic foods. Associations remained significant (p = .04) between food insecurity and shopping frequency in adjusted models. Interventions requiring or incentivizing small food stores to stock healthful products could be important for improving access to nutritious food for food-insecure persons.

Longitudinal Fruit and Vegetable Sales in Small Food Retailers: Response to a Novel Local Food Policy and Variation by Neighborhood Socioeconomic Status

Small food retailers, including corner/convenience stores, pharmacies, gas-marts, and dollar stores, have historically stocked limited fruits and vegetables, though this may be changing. We examined increases in sales, customer purchasing, and stocking of fresh and/or frozen fruits and vegetables in small food stores over time and in relation to: (a) a local food policy (the Minneapolis Staple Foods Ordinance) and (b) neighborhood socioeconomic status (SES). We used longitudinal data (2014–2017) from 147 randomly-sampled stores in Minneapolis/St. Paul, USA, collected using interviewer-administered manager surveys (measuring sales and stocking) and customer intercepts/observations (measuring purchasing, n = 3039). The local policy required Minneapolis stores to meet minimum stocking standards for fresh/frozen produce and other healthy foods. No ordinance existed in St. Paul. Mixed regression models examined overall change over time and change by city and neighborhood SES. We observed significant increases over time (p < 0.05) in sales and purchasing of fresh fruit and in stocking of fresh fruit, frozen fruit, and frozen vegetables. We did not identify consistent statistical evidence for differential change in sales, purchasing, or stocking by city or neighborhood SES. Key study findings suggest limited differential effects of the local ordinance and/or neighborhood SES. However, findings also indicate significant time trends for some products, including consistent improvements in sales, customer purchasing, and stocking of fresh fruit. Given the ready-to-eat convenience of many fresh fruits and their broad appeal, fresh fruit appears a promising target for advancing the healthfulness of small food retailers.

Store and neighborhood differences in retailer compliance with a local staple foods ordinance

BACKGROUND

Policies to improve healthy food retail have been recognized as a potential means of reducing diet-related health disparities. The revised 2014 Minneapolis Staple Foods Ordinance instituted minimum stocking standards for healthy, staple foods. The objective of this study was to examine retailer compliance with the policy, and whether compliance varied by neighborhood and store characteristics.

METHODS

In this natural experiment, audits were conducted annually pre- and post-ordinance (2014-2017) in 155 small/nontraditional stores in Minneapolis, MN and a comparison city (St. Paul, MN). Compliance measures for 10 product categories included: (1) met requirements for ≥8 categories; (2) 10-point scale (one point for each requirement met); and (3) carried any item in each category. Store characteristics included store size and ownership status. Neighborhood characteristics included census-tract socioeconomic status and low-income/low-access status. Analyses were conducted in 2018.

RESULTS

All compliance measures increased in both Minneapolis and St. Paul from pre- to post-policy; Minneapolis increases were greater only for carrying any item in each category (p < 0.01). In Minneapolis, corporate (vs. independent) stores were generally more compliant. No differences were found by neighborhood characteristics.

CONCLUSIONS

Overall trends suggest broad movement among Minneapolis stores towards providing a minimum level of staple foods. Increases were greater in corporate stores. Trends do not suggest neighborhood-level disparities in compliance.

STUDY REGISTRATION

ClinicalTrials.gov NCT02774330, retrospectively registered May 17, 2016.

Do High School Students Participate in Second Chance Breakfast Programs?

BACKGROUND

Breakfast consumption often decreases as youth get older. The School Breakfast Program (SBP) provides an opportunity to intervene and increase breakfast consumption, especially among high school students.

METHODS

Project breakFAST implemented an expanded breakfast service at 12 high schools. In this longitudinal evaluation, school administrators provided SBP participation and demographic data on all ninth and 10th graders for two full consecutive school years. Students screened for eating breakfast <3 times/week were randomly selected to participate in the cohort study. The cohort completed a survey on perceived barriers, benefits, and breakfast habits.

RESULTS

At baseline, all 12 schools had only traditional before school cafeteria SBP service. Mean participation was 16.3% and ranged from 7.9 to 38.1%. After the intervention, there was an increase in participation to 25.7% (p = .004) ranging from 14.1 to 47.5%. There was no change in breakfast participation before school (13.3%, p = .06). Students who traveled to school by car, bike, or walking at baseline were 4.5% less likely to participate in second chance breakfast at follow-up than those who took the bus to school (p = .006).

CONCLUSION

Second chance breakfast is an option for increasing high school breakfast participation, especially for those riding the bus.

Written Nutrition Guidelines, Client Choice Distribution, and Adequate Refrigerator Storage Are Positively Associated with Increased Offerings of Feeding America's Detailed Foods to Encourage (F2E) in a Large Sample of Arkansas Food Pantries

BACKGROUND

Millions of food-insecure households in the United States obtain food from food pantries each year. These foods are often of insufficient nutritional quality.

OBJECTIVE

Our aim was to describe the frequency with which Arkansas food pantries offer foods included in Feeding America's Detailed Foods to Encourage (F2E) framework, and examine food pantry characteristics associated with increased frequency of offering F2E and other foods.

DESIGN

This was a 27-item cross-sectional online survey that assessed food pantries' characteristics (eg, storage capacities, number of clients served) and typical food offerings.

PARTICIPANTS/SETTING

Partnering with five of Arkansas's six food banks, 764 e-mail invitations were sent to food agency managers across the state. A final sample of 357 food pantries was included in the analyses.

MAIN OUTCOME MEASURES

The primary outcomes of interest were the frequencies of offering specific F2E and F2E in general. The F2E framework was developed by Feeding America to more accurately assess food banks' inventories, and its categories (Fruits and Vegetables; Protein; Dairy; and Grains) are generally consistent with MyPlate.

STATISTICAL ANALYSES PERFORMED

Descriptive statistics were computed for all food pantry characteristics and frequency of foods offered. Associations between food pantry characteristics and the frequency of offering F2E were examined via multiple linear regression and path analysis.

RESULTS

Only 18.5% of food pantries had written nutrition guidelines, and only 19.3% offered client choice distribution. The F2E most commonly offered were meat/poultry/seafood without breading and not fried (59.6%) and peanut butter (58.2%). The least commonly offered F2E were nuts/seeds with nothing added (3.8%) and low-fat/1%/skim cheese (8.2%). Written nutrition guidelines (P<0.001), client choice distribution (P=0.003), and adequate refrigerator storage (P=0.010) were associated with more frequently offering F2E.

CONCLUSIONS

This study fills a gap in knowledge by documenting food pantry characteristics that are associated with the frequencies of offering specific types of healthy foods.

Evaluation of the first U.S. staple foods ordinance: impact on nutritional quality of food store offerings, customer purchases and home food environments

Background

Many lower-income and racially diverse communities in the U.S. have limited access to healthy foods, with few supermarkets and many small convenience stores, which tend to stock limited quantities and varieties of healthy foods. To address food access, in 2015 the Minneapolis Staple Foods Ordinance became the first policy requiring food stores to stock minimum quantities and varieties of 10 categories of healthy foods/beverages, including fruits, vegetables, whole grains and other staples, through licensing. This study examined whether: (a) stores complied, (b) overall healthfulness of store environments improved, (c) healthy customer purchases increased, and (d) healthfulness of home food environments improved among frequent small store shoppers.

Methods

Data for this natural (or quasi) experiment were collected at four times: pre-policy (2014), implementation only (no enforcement, 2015), enforcement initiation (2016) and continued monitoring (2017). In-person store assessments were conducted to evaluate food availability, price, quality, marketing and placement in randomly sampled food retailers in Minneapolis (n = 84) and compared to those in a nearby control city, St. Paul, Minnesota (n = 71). Stores were excluded that were: supermarkets, authorized through WIC (Special Supplemental Nutrition Program for Women, Infants, and Children), and specialty stores (e.g., spice shops). Customer intercept interviews were conducted with 3,039 customers exiting stores. Home visits, including administration of home food inventories, were conducted with a sub-sample of frequent shoppers (n = 88).

Results

Overall, findings indicated significant improvements in healthy food offerings by retailers over time in both Minneapolis and St. Paul, with no significant differences in change between the two cities. Compliance was low; in 2017 only 10% of Minneapolis retailers in the sample were fully compliant, and 51% of participating Minneapolis retailers met at least 8 of the 10 required standards. Few changes were observed in the healthfulness of customer purchases or the healthfulness of home food environments among frequent shoppers, and changes were not different between cities.

Conclusions

This study is the first evaluation a local staple foods ordinance in the U.S. and reflects the challenges and time required for implementing such policies.

Trial registration

NCT02774330.

Breakfast Is Brain Food? The Effect on Grade Point Average of a Rural Group Randomized Program to Promote School Breakfast

BACKGROUND

Adolescents frequently miss breakfast which may impact cognitive, academic, and health outcomes. This analysis describes the effect of a trial to assess school level changes to increase breakfast consumption on grade point average (GPA).

METHODS

Sixteen rural Minnesota high schools were randomized to a policy and environmental change intervention or delayed intervention (control) group. Baseline screening identified, randomly selected and enrolled 9th and 10th grade students who eat breakfast ≤3 times per school week for assessment. Mean unweighted GPA was provided by 13 schools for 636 students. Student-level and administrative data were used for sociodemographic and free or reduced-price meals (FRPM). Linear mixed models and latent class analysis (LCA) were used to assess change in GPA.

RESULTS

Students were 54% female, 76% white, and 34% received FRPM. Unweighted cumulative GPA mean = 2.82 (0.78) at baseline. There was no significant intervention effect on GPA postintervention or 1-year follow-up. LCA revealed two classes: "higher" (N = 495) and "lower" (N = 141) resource. There was an intervention effect among low-resource students from baseline to 1-year post only among the control condition (delayed intervention).

CONCLUSIONS

In combination with the full study results, increasing breakfast consumption may have an impact particularly for low resource students.

Examining Colorectal Cancer Risk Awareness and Food Shelf Use Among Health Center Patients

OBJECTIVE

To employ the Colorectal Cancer Risk Awareness for Public Health Prevention (CRC-PHP) survey to examine how food shelf use and other covariates predict awareness of colorectal cancer (CRC) risk factors among patients of a Federally Qualified Health Center in Minneapolis, Minnesota. Secondary aims included describing the demographic and chronic-disease characteristics of the patient population and assessing their general knowledge of additional CRC risk factors and intent to make healthy food selections in the near future.

METHODS

Measures included CRC risk awareness, food shelf use, chronic-disease status, and intent to select healthy food options. Regression models and chi-square tests of independence were employed to examine differences among food shelf users and non-users.

RESULTS

Among the 103 patients surveyed, 29% reported using a food shelf in the last 12 months. Forty-seven percent of food shelf users and 38% of non-users reported having at least 1 diet-related condition (e.g., type 2 diabetes mellitus). Food shelf users scored 1.2 points higher than non-users, on average, on the CRC risk-factor awareness scale. They also answered more survey questions correctly regarding fruit and vegetable intake and its effect on CRC risk (p = 0.035). Most participants reported being likely to purchase health-promoting foods in the future. In addition, participants reported being likely to select foods that were labeled as protective against CRC.

CONCLUSIONS

Behavioral interventions exist that are focused on preventing and managing type II diabetes among food shelf users. Building off such interventions and incorporating behavioral economics components (such as nudges and product labels) has the potential to reduce food shelf customers' heightened risk and management of CRC.

Customer Characteristics and Shopping Patterns Associated with Healthy and Unhealthy Purchases at Small and Non-traditional Food Stores

Small and non-traditional food stores (e.g., corner stores) are often the most accessible source of food for residents of lower income urban neighborhoods in the U.S. Although healthy options are often limited at these stores, little is known about customers who purchase healthy, versus less healthy, foods/beverages in these venues. We conducted 661 customer intercept interviews at 105 stores (corner stores, gas marts, pharmacies, dollar stores) in Minneapolis/St. Paul, Minnesota, assessing all food and beverage items purchased. We defined three categories of "healthy" and four categories of "unhealthy" purchases. Interviews assessed customer characteristics [e.g., demographics, body-mass index (BMI)]. We examined associations between healthy versus unhealthy purchases categories and customer characteristics. Overall, 11% of customers purchased ≥1 serving of healthy foods/beverages in one or more of the three categories: 8% purchased fruits/vegetables, 2% whole grains, and 1% non-/low-fat dairy. Seventy-one percent of customers purchased ≥1 serving of unhealthy foods/beverages in one or more of four categories: 46% purchased sugar-sweetened beverages, 17% savory snacks, 15% candy, and 13% sweet baked goods. Male (vs. female) customers, those with a lower education levels, and those who reported shopping at the store for convenience (vs. other reasons) were less likely to purchase fruits/vegetables. Unhealthy purchases were more common among customers with a BMI ≥30 kg/m² (vs. lower BMI). Results suggest intervention opportunities to increase healthy purchases at small and non-traditional food stores, particularly interventions aimed at male residents, those with lower education levels and residents living close to the store.

Perceptions of a healthier neighborhood food environment linked to greater fruit and vegetable purchases at small and non-traditional food stores

The aim of this study was to examine associations between perceived neighborhood food environments and food purchasing at small and non-traditional food stores. Intercept interviews of 661 customers were conducted in 105 small and non-traditional food stores. We captured (1) customer perceptions of the neighborhood food environment, (2) associations between customer perceptions and store-level characteristics, and (3) customers' perceptions and shopping behaviors. Findings suggest that customers with more favorable perceptions of the neighborhood food environment were more likely to purchase fruits and vegetables, despite no significant association between perceptions of the neighborhood and objectively measured store characteristics.

Food Hardship and Obesity in a Sample of Low-Income Immigrants

Very little work has examined the relationship between food hardship (having inconsistent financial resources to buy food) and obesity among immigrant groups. A cross-sectional study was conducted in a low-income, multi-racial/ethnic adult sample in greater Boston, MA (n = 828). Modified Poisson regression models estimated the association between food hardship obesity (BMI ≥ 30) among adults reporting food hardship; interactions were tested by place of birth. Body mass index (BMI) was based on anthropometric height and weight. In adjusted models, those experiencing food hardship were more likely to be obese (RR 1.17, CI 1.07, 1.29) than those not experiencing food hardship. Participants from Haiti reporting food hardship were more likely to be obese than those not reporting hardship (RR 1.58, CI 1.23, 2.04); this was not the case among other groups (US born, Puerto Rican, Latin American, Other). The relationship between food hardship and weight may vary among immigrant subgroups.

Association between store food environment and customer purchases in small grocery stores, gas-marts, pharmacies and dollar stores

Background

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.

Methods

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.

Results

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.

Conclusions

Strategies addressing both customer demand and the availability of healthy food may be necessary to improve customer purchases.

Trial registration

ClinialTrials.gov: NCT02774330. Registered May 4, 2016 (retrospectively registered).

Electronic supplementary material

The online version of this article (doi:10.1186/s12966-017-0531-x) contains supplementary material, which is available to authorized users.

School-Based Obesity-Prevention Policies and Practices and Weight-Control Behaviors among Adolescents

BACKGROUND

The promotion of healthy eating and physical activity within school settings is an important component of population-based strategies to prevent obesity; however, adolescents may be vulnerable to weight-related messages, as rapid development during this life stage often leads to preoccupation with body size and shape.

OBJECTIVE

This study examines secular trends in secondary school curricula topics relevant to the prevention of unhealthy weight-control behaviors; describes cross-sectional associations between weight-related curricula content and students' use of weight-control behaviors; and assesses whether implementation of school-based obesity-prevention policies/practices is longitudinally related to students' weight-control behaviors.

DESIGN

The Minnesota School Health Profiles and Minnesota Student Survey (grades 9 and 12) data were used along with National Center for Education Statistics data to examine secular trends, cross-sectional associations (n=141 schools), and longitudinal associations (n=42 schools).

MAIN OUTCOME MEASURES

Students self-reported their height and weight along with past-year use of healthy (eg, exercise), unhealthy (eg, fasting), and extreme (eg, use laxatives) weight-control behaviors.

STATISTICAL ANALYSES PERFORMED

Descriptive statistics, generalized estimating equations, and generalized linear regression models accounting for school-level demographics.

RESULTS

There was no observable pattern during the years 2008 to 2014 in the mean number of curricula topics addressing unhealthy weight-control behaviors, despite an increase in the prevalence of curricula addressing acceptance of body-size differences. Including three vs fewer weight-control topics and specifically including the topic of eating disorders in the curricula was related to a lower school-level percent of students using any extreme weight-control behaviors. In contrast, an overall measure of implementing school-based obesity-prevention policies/practices (eg, prohibited advertising) was unrelated to use of unhealthy or extreme behaviors.

CONCLUSIONS

Results suggest obesity-prevention policies/practices do not have unintended consequences for student weight-control behaviors and support the importance of school-based health education as part of efforts to prevent unhealthy behaviors.

Healthfulness of Foods Advertised in Small and Nontraditional Urban Stores in Minneapolis-St. Paul, Minnesota, 2014

Introduction

Shopping at small food stores, such as corner stores and convenience stores, is linked with unhealthful food and beverage purchases, poor diets, and high risk of obesity. However, information on how foods and beverages are marketed at small stores is limited. The objective of this study was to examine advertisements and product placements for healthful and less healthful foods and beverages at small stores in Minneapolis–St. Paul, Minnesota.

Methods

We conducted in-store audits of 119 small and nontraditional food retailers (corner/small grocery stores, food–gas marts, pharmacies, and dollar stores) randomly selected from licensing lists in Minneapolis–St. Paul in 2014. We analyzed data on exterior and interior advertisements of foods and beverages and product placement.

Results

Exterior and interior advertisements for healthful foods and beverages were found in less than half of stores (exterior, 37% [44 of 119]; interior, 20% [24 of 119]). Exterior and interior advertisements for less healthful items were found in approximately half of stores (exterior, 46% [55 of 119]); interior, 66% [78 of 119]). Of the 4 store types, food–gas marts were most likely to have exterior and interior advertisements for both healthful and less healthful items. Corner/small grocery stores and dollar stores had fewer advertisements of any type. Most stores (77%) had at least 1 healthful item featured as an impulse buy (ie, an item easily reached at checkout), whereas 98% featured at least 1 less healthful item as an impulse buy.

Conclusion

Findings suggest imbalanced advertising and product placement of healthful and less healthful foods and beverages at small food stores in Minneapolis–St. Paul; less healthful items were more apt to be featured as impulse buys. Future interventions and polices should encourage reductions in advertisements and impulse-buy placements of unhealthful products, particularly in food–gas marts, and encourage advertisements of healthful products.

Successful customer intercept interview recruitment outside small and midsize urban food retailers

BACKGROUND

Customer intercept interviews are increasingly used to characterize food purchases at retail food outlets and restaurants; however, methodological procedures, logistical issues and response rates using intercept methods are not well described in the food environment literature. The aims of this manuscript were to 1) describe the development and implementation of a customer intercept interview protocol in a large, NIH-funded study assessing food purchases in small and midsize food retailers in Minneapolis and St. Paul, Minnesota, 2) describe intercept interview response rates by store type and environmental factors (e.g., neighborhood socioeconomic status, day/time, weather), and 3) compare demographic characteristics (e.g., gender, race/ethnicity) of participants versus non-participants.

METHODS

After a pilot phase involving 28 stores, a total of 616 interviews were collected from customers exiting 128 stores in fall 2014. The number of eligible customers encountered per hour (a measure of store traffic), participants successfully recruited per hour, and response rates were calculated overall and by store type, neighborhood socio-economic status, day and time of data collection, and weather. Response rates by store type, neighborhood socio-economic status, time and day of data collection, and weather, and characteristics of participants and non-participants were compared using chi-square tests.

RESULTS

The overall response rate was 35 %, with significantly higher response rates at corner/small grocery stores (47 %) and dollar stores (46 %) compared to food-gas marts (32 %) and pharmacies (26 %), and for data collection between 4:00-6:00 pm on weekdays (40 %) compared to weekends (32 %). The distribution of race/ethnicity, but not gender, differed between participants and non-participants (p < 0.01), with greater participation rates among those identified as Black versus White.

CONCLUSIONS

Customer intercept interviews can be successfully used to recruit diverse samples of customers at small and midsize food retailers. Future community-based studies using customer intercept interviews should collect data sufficient to report response rates and consider potential differences between the racial/ethnic composition of the recruited sample and the target population.

Lack of Healthy Food in Small-Size to Mid-Size Retailers Participating in the Supplemental Nutrition Assistance Program, Minneapolis-St. Paul, Minnesota, 2014

Introduction

The US Department of Agriculture has stocking criteria for healthy foods among Supplemental Nutrition Assistant Program (SNAP)-authorized retailers. Increased access to healthy food could improve diet quality among SNAP participants, which has implications for chronic disease prevention. The objective of this study was to quantify healthy foods stocked in small-size to mid-size retailers who are authorized under SNAP but not under the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC).

Methods

We used formative, cross-sectional data from a large policy evaluation to conduct secondary analyses. Store audits were conducted in 2014 in 91 randomly selected, licensed food stores in Minneapolis and St. Paul, Minnesota. Supermarkets and retailers participating in WIC, which are required to stock healthy foods, were excluded as were other stores not reasonably expected to stock staple foods, such as specialty stores or produce stands. Availability of milk, fruits, vegetables, and whole-grain–rich foods was assessed.

Results

The 91 stores studied were corner stores, food–gas marts, dollar stores, and pharmacies. More than half carried 1 or more varieties of fat-free or low-fat milk, fresh or canned fruit, and whole-grain–rich cereal. However, only one-third stocked 1 or more varieties of fresh vegetables and only one-quarter stocked whole-grain–rich products, such as whole-grain-rich bread (26%) or tortillas (21%) or brown rice (25%). Few stores stocked at least 2 varieties of each product.

Conclusions

Many stores did not stock a variety of healthy foods. The US Department of Agriculture should change policies to improve minimum stocking requirements for SNAP-authorized retailers.

Disparities persist in nutrition policies and practices in Minnesota secondary schools

Access to healthy foods among secondary school students is patterned by individual-level socioeconomic status, but few studies have examined how school nutrition policies and practices are patterned by school-level characteristics. The objective of our study was to examine school nutrition policies and practices by school characteristics (eg, location, racial/ethnic composition, and free/reduced priced lunch eligibility) in Minnesota secondary schools between 2008 and 2012. Data from the 2008 to 2012 Minnesota School Health Profiles survey were used to assess school nutrition policies and practices, and National Center for Educational Statistics data were used for school characteristics (n=505 secondary schools). Nutrition policies and practices included the availability of low-nutrient, energy dense (LNED) items, strategies to engage students in healthy eating, and restrictions on advertisements of LNED products in areas around the school. Among school-level characteristics, school location was most strongly related to school nutrition policies. Across all years, city schools were less likely than town/rural schools to have vending machines/school stores (prevalence difference [PD] -13.7, 95% CI -25.0 to -2.3), and less likely to sell sport drinks (PD -36.3, 95% CI -51.8 to -20.7). City schools were also more likely to prohibit advertisements for LNED products in school buildings (PD 17.7, 95% CI 5.5 to 29.9) and on school grounds (PD 15.6, 95% CI 1.7 to 29.5). Between 2008 and 2012, the prevalence of some healthy eating policies/practices (eg, limiting salty snacks, offering taste testing, and banning unhealthy food advertisements in school publications) declined in city schools only, where these policies/practices had previously been more common. Monitoring of these trends is needed to understand the influence of these policies on student outcomes across school settings.

The relationship between diet and perceived and objective access to supermarkets among low-income housing residents

In the U.S., supermarkets serve as an important source of year-round produce (Chung & Myers, 1999), and yet access to supermarkets may be scarce in "food deserts," or poor, urban areas that lack sources of healthy, affordable food (Cummins & Macintyre, 2002). This study examined objective distance to the nearest supermarket and participant-report of supermarket access in relation to fruit and vegetable intake. Street-network distance to the closest supermarket was calculated using GIS mapping. Perceived access was assessed by a survey question asking whether participants had a supermarket within walking distance of home. Cross-sectional survey data were collected from 828 low-income housing residents in three urban areas in greater-Boston. Generalized estimating equations were used to estimate the association between perceived and objective supermarket access and diet. Fruit and vegetable consumption was low (2.63 servings/day). Results suggest that most low-income housing residents in greater-Boston do not live in "food deserts," as the average distance to a supermarket was 0.76 km (range 0.13-1.22 km). Distance to a supermarket was not associated with fruit and vegetable intake (p = 0.22). Perceived supermarket access was strongly associated with increased fruit and vegetable intake (0.5 servings/day) after controlling for socio-demographic covariates (p < 0.0001). Patterns of mismatch between perceived and objective measures revealed that mismatch between the two measures were high (31.45%). Those who did not report a supermarket within walking distance from home despite the objective presence of a supermarket within 1 km consumed significantly fewer fruits and vegetables (0.56 servings/day) than those with a supermarket who reported one, even after controlling for socio-demographic variables (p = 0.0008). Perceived measures of the food environment may be more strongly related to dietary behaviors than objective ones, and may incorporate components of food access not captured in objective measures.

The local food environment and diet: a systematic review

Despite growing attention to the problem of obesogenic environments, there has not been a comprehensive review evaluating the food environment-diet relationship. This study aims to evaluate this relationship in the current literature, focusing specifically on the method of exposure assessment (GIS, survey, or store audit). This study also explores 5 dimensions of "food access" (availability, accessibility, affordability, accommodation, acceptability) using a conceptual definition proposed by Penchansky and Thomas (1981). Articles were retrieved through a systematic keyword search in Web of Science and supplemented by the reference lists of included studies. Thirty-eight studies were reviewed and categorized by the exposure assessment method and the conceptual dimensions of access it captured. GIS-based measures were the most common measures, but were less consistently associated with diet than other measures. Few studies examined dimensions of affordability, accommodation, and acceptability. Because GIS-based measures on their own may not capture important non-geographic dimensions of access, a set of recommendations for future researchers is outlined.