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Facility Attractiveness and Social Vulnerability Impacts on Spatial Accessibility to Opioid Treatment Programs in South Carolina

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  • Parisa Bozorgi

    (Department of Environmental Health Sciences, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
    South Carolina Department of Health and Environmental Control (SCDHEC), Columbia, SC 29201, USA)

  • Jan M. Eberth

    (Rural and Minority Health Research Center, Arnold School of Public Health, University of South Carolina, Columbia, SC 29210, USA
    Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA)

  • Jeannie P. Eidson

    (South Carolina Department of Health and Environmental Control (SCDHEC), Columbia, SC 29201, USA)

  • Dwayne E. Porter

    (Department of Environmental Health Sciences, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA)

Abstract

Opioid dependence and opioid-related mortality have been increasing in recent years in the United States. Available and accessible treatments may result in a reduction of opioid-related mortality. This work describes the geographic variation of spatial accessibility to opioid treatment programs (OTPs) and identifies areas with poor access to care in South Carolina. The study develops a new index of access that builds on the two-step floating catchment area (2SFCA) method, and has three dimensions: a facility attractiveness index, defined by services rendered incorporated into the Huff Model; a facility catchment area, defined as a function of facility attractiveness to account for variable catchment size; and a Social Vulnerability Index (SVI) to account for nonspatial factors that mitigate or compound the impacts of spatial access to care. Results of the study indicate a significant variation in access to OTPs statewide. Spatial access to OTPs is low across the entire state except for in a limited number of metropolitan areas. The majority of the population with low access (85%) live in areas with a moderate-to-high levels of social vulnerability. This research provides more realistic estimates of access to care and aims to assist policymakers in better targeting disadvantaged areas for OTP program expansion and resource allocation.

Suggested Citation

  • Parisa Bozorgi & Jan M. Eberth & Jeannie P. Eidson & Dwayne E. Porter, 2021. "Facility Attractiveness and Social Vulnerability Impacts on Spatial Accessibility to Opioid Treatment Programs in South Carolina," IJERPH, MDPI, vol. 18(8), pages 1-13, April.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:8:p:4246-:d:537748
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    References listed on IDEAS

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    1. Jianhua Ni & Jinyin Wang & Yikang Rui & Tianlu Qian & Jiechen Wang, 2015. "An Enhanced Variable Two-Step Floating Catchment Area Method for Measuring Spatial Accessibility to Residential Care Facilities in Nanjing," IJERPH, MDPI, vol. 12(11), pages 1-15, November.
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    Cited by:

    1. Sauer, Jeffery & Stewart, Kathleen, 2023. "Geographic information science and the United States opioid overdose crisis: A scoping review of methods, scales, and application areas," Social Science & Medicine, Elsevier, vol. 317(C).
    2. Karima Lalani & Christine Bakos-Block & Marylou Cardenas-Turanzas & Sarah Cohen & Bhanumathi Gopal & Tiffany Champagne-Langabeer, 2022. "The Impact of COVID-19 on Opioid-Related Overdose Deaths in Texas," IJERPH, MDPI, vol. 19(21), pages 1-13, October.
    3. Jabrullah Ab Hamid & Muhamad Hanafiah Juni & Rosliza Abdul Manaf & Sharifah Norkhadijah Syed Ismail & Poh Ying Lim, 2023. "Spatial Accessibility of Primary Care in the Dual Public–Private Health System in Rural Areas, Malaysia," IJERPH, MDPI, vol. 20(4), pages 1-21, February.

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