The U.S. food system is rapidly changing, including the growth of mass merchandisers and dollar stores, which may impact the quality of packaged food purchases (PFPs). Furthermore, diet-related disparities exist by socioeconomic status (SES) and rural residence. We use data from the 2010–2018 Nielsen Homescan Panel to describe the nutritional profiles of PFPs by store type and to assess whether these vary by household urbanicity and SES. Store types include grocery stores, mass merchandisers, club stores, online shopping, dollar stores, and convenience/drug stores. Food and beverage groups contributing the most calories at each store type are estimated using survey-weighted means, while the associations of urbanicity and SES with nutritional quality are estimated using multivariate regression. We find that households that are customers at particular store types purchase the same quality of food regardless of urbanicity or SES. However, we find differences in the quality of foods between store types and that the quantity of calories purchased at each store type varies according to household urbanicity and SES. Rural shoppers tend to shop more at mass merchandisers and dollar stores with less healthful PFPs. We discuss implications for the types of store interventions most relevant for improving the quality of PFPs.
Background
Since 2003–4, the United States has seen large declines in sugar-sweetened beverage (SSB) intake overall, especially among non-Hispanic white (NHW) subpopulations. However, obesity prevalence has not shown comparable declines in the 2 highest SSB-consuming groups, adolescents and young adults. Little is understood about the quality of the diet excluding SSBs (non-SSB diet).
Objectives
The objective of this study was to evaluate differences in non-SSB diet quality in SSB consumers and nonconsumers in adolescents and young adults and in the 3 major race/ethnic subgroups.
Methods
This study utilized data from the NHANES, a cross-sectional, nationally representative survey of the US population. Data from 6426 participants aged 12–29 y from the NHANES (2009–2014) was included. Quality of the non-SSB diet was measured using the 2015 Healthy Eating Index (HEI). Multivariate linear regressions controlled for sociodemographic characteristics and included interactions by race/ethnicity [NHWs, non-Hispanic blacks (NHBs), Hispanics]. Individuals were classified as non-, low- (<10% of daily calories), or high-SSB consumers (≥10% of daily calories), according to the US Dietary Guidelines added sugar intake recommendation.
Results
Non-SSB HEI scores differed among SSB consumer groups (53 for adolescent nonconsumers compared with 46 for high consumers, P < 0.001; 57 for young adult nonconsumers compared with 45 for high consumers, P < 0.001), although all scores were low and require improvement. Among NHBs, significant differences in non-SSB HEI were found only between non- and low-SSB consumers. In Hispanics, associations varied by age group, with significant differences found for young adults but no association found for adolescents.
Conclusions
Low non-SSB HEI scores in SSB consumers suggest that reducing SSB consumption alone will not be a sufficient strategy for improving dietary quality in adolescents and young adults. Future policies must also consider improving the non-SSB diet.
Objective:
To determine whether disparities exist in the nutritional quality of packaged foods and beverage purchases (PFPs) by household income, education, and race/ethnicity and if they changed over time.
Design:
We used Nielsen Homescan, a nationally representative household panel, from 2008-2018 (n=672,821 household-year observations). Multivariate, multilevel regressions were used to model the association between sociodemographic groups and a set of nutritional outcomes of public health interest, including nutrients of concern (sugar, saturated fat, sodium) and calories from specific food groups (fruits, non-starchy vegetables, processed meats, sugar-sweetened beverages and junk foods).
Setting:
Household panel survey
Participants:
Approximately 60,000 households each year from the United States.
Results:
Disparities were found by income and education for most outcomes, and widened for purchases of fruits, vegetables, and the percent of calories from sugar between 2008 and 2018. The magnitude of disparities was largest by education. Disparities between Black and White households include the consumption of processed meats and the percent calories from sugar, while no disparities between White and Hispanic households were found. Disparities have been largely persistent, as any significant changes over time have been substantively small.
Conclusions:
Policies to improve the healthfulness of packaged foods must be expanded beyond SSB taxes and future research should focus on what mediates the relationship between education and diet so as not to exacerbate disparities.
SNAP participants had poorer diet quality from consumption of AH food than did nonparticipants. Future research should focus on interventions to improve the healthfulness of grocery store purchases as a mechanism to improve dietary quality of SNAP participants.
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