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Social Distancing Associations with COVID-19 Infection and Mortality Are Modified by Crowding and Socioeconomic Status

Author

Listed:
  • Trang VoPham

    (Epidemiology Program, Fred Hutchinson Cancer Research Center, Division of Public Health Sciences, Seattle, WA 98109, USA
    Department of Epidemiology, University of Washington School of Public Health, Seattle, WA 98195, USA)

  • Matthew D. Weaver

    (Departments of Medicine and Neurology, Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, Boston, MA 02115, USA
    Division of Sleep Medicine, Harvard Medical School, Boston, MA 02115, USA)

  • Gary Adamkiewicz

    (Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA)

  • Jaime E. Hart

    (Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
    Department of Medicine, Channing Division of Network Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA)

Abstract

The SARS-CoV-2 virus is a public health emergency. Social distancing is a key approach to slowing disease transmission. However, more evidence is needed on its efficacy, and little is known on the types of areas where it is more or less effective. We obtained county-level data on COVID-19 incidence and mortality during the first wave, smartphone-based average social distancing (0–5, where higher numbers indicate more social distancing), and census data on demographics and socioeconomic status. Using generalized linear mixed models with a Poisson distribution, we modeled associations between social distancing and COVID-19 incidence and mortality, and multiplicative interaction terms to assess effect modification. In multivariable models, each unit increase in social distancing was associated with a 26% decrease ( p < 0.0001) in COVID-19 incidence and a 31% decrease ( p < 0.0001) in COVID-19 mortality. Percent crowding, minority population, and median household income were all statistically significant effect modifiers. County-level increases in social distancing led to reductions in COVID-19 incidence and mortality but were most effective in counties with lower percentages of black residents, higher median household incomes, and with lower levels of household crowding.

Suggested Citation

  • Trang VoPham & Matthew D. Weaver & Gary Adamkiewicz & Jaime E. Hart, 2021. "Social Distancing Associations with COVID-19 Infection and Mortality Are Modified by Crowding and Socioeconomic Status," IJERPH, MDPI, vol. 18(9), pages 1-8, April.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:9:p:4680-:d:544958
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    References listed on IDEAS

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    Cited by:

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    2. Jian Yang & Jian Ming Luo & Rui Yao, 2022. "How Fear of COVID-19 Affects the Behavioral Intention of Festival Participants—A Case of the HANFU Festival," IJERPH, MDPI, vol. 19(4), pages 1-17, February.

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