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Distributional Changes in U.S. Sugar-Sweetened Beverage Purchases, 2002-2014
Pourya Valizadeh1, Barry M Popkin2, Shu Wen Ng2
1Carolina Population Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
American Journal of Preventive Medicine
|May 5, 2020
Summary
U.S. households reduced sugar-sweetened beverage purchases significantly. While racial disparities narrowed, income disparities in purchases persisted from 2002 to 2014.
Area of Science:
- Public Health
- Nutrition Science
- Health Policy
Background:
- U.S. policies aim to decrease sugar-sweetened beverage (SSB) consumption.
- Limited research exists on trends in SSB purchase distributions and disparities among subpopulations.
Purpose of the Study:
- To analyze changes in total SSB purchases and major subtypes from 2002-2014.
- To examine these trends across different purchase levels (low, moderate, high) and demographic groups.
Main Methods:
- Utilized longitudinal Nielsen Homescan Panel data (2002-2014) for U.S. households.
- Defined SSBs as caloric non-alcoholic beverages with added sugars.
- Employed longitudinal quantile regression to model purchase trends (kcal/day/capita) across distributions.
Main Results:
- Households significantly reduced SSB purchases across all levels.
- High purchasers showed smaller relative but larger absolute reductions.
- Racial/ethnic disparities narrowed, but income disparities persisted.
Conclusions:
- Meaningful reductions in SSB purchases occurred across all U.S. household levels.
- Improvements in racial/ethnic disparities were observed, while income disparities remained.
- Findings highlight the complex patterns in SSB consumption and associated disparities.
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