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Changes in sugar-sweetened beverage consumption in the first two years (2018 – 2020) of San Francisco’s tax: A prospective longitudinal study

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  • Lynn D Silver
  • Alisa A Padon
  • Libo Li
  • Bethany J Simard
  • Thomas K Greenfield

Abstract

Background: Sugar sweetened beverage (SSB) taxes are a promising strategy to decrease SSB consumption, and their inequitable health impacts, while raising revenue to meet social objectives. In 2016, San Francisco passed a one cent per ounce tax on SSBs. This study compared SSB consumption in San Francisco to that in San José, before and after tax implementation in 2018. Methods & findings: A longitudinal panel of adults (n = 1,443) was surveyed from zip codes in San Francisco and San José, CA with higher densities of Black and Latino residents, racial/ethnic groups with higher SSB consumption in California. SSB consumption was measured at baseline (11/17-1/18), one- (11/18-1/19), and two-years (11/19-1/20) after the SSB tax was implemented in January 2018. Average daily SSB consumption (in ounces) was ascertained using the BevQ-15 instrument and modeled as both continuous and binary (high consumption: ≥6 oz (178 ml) versus low consumption:

Suggested Citation

  • Lynn D Silver & Alisa A Padon & Libo Li & Bethany J Simard & Thomas K Greenfield, 2023. "Changes in sugar-sweetened beverage consumption in the first two years (2018 – 2020) of San Francisco’s tax: A prospective longitudinal study," PLOS Global Public Health, Public Library of Science, vol. 3(1), pages 1-19, January.
    • Handle: RePEc:plo:pgph00:0001219
    DOI: 10.1371/journal.pgph.0001219
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