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Geographic Equity in Hospital Utilization: Canadian Evidence Using a Concentration-Index Approach

Author

Listed:
  • Jeremiah Hurley

    () (Department of Economics, Centre for Health Economics and Policy Analysis, Department of Clinical Epidemiology and Biostatistics, McMaster University)

  • Michel Grignon

    () (Department of Economics, Centre for Health Economics and Policy Analysis, Department of Health, Aging and Society, McMaster University)

  • Li Wang

    () (Centre for Health Economics and Policy Analysis, Department of Clinical Epidemiology and Biostatistics, McMaster University)

  • Tara McGrath

    (Accelerated Economics Training Program, Government of Canada)

Abstract

Distance-related geographic barriers challenge the ability of health systems to allocate health care resources equitably according to need. The paper adapts the concentration-index approach, commonly used for measuring income-related equity, to assess distance-related equity in hospital utilization in the province of Ontario, Canada. The analysis is based on individual-level data from the Canadian Community Health Survey, which provides information on respondents’ hospital utilization, health status, demographic, socio-economic status and location, merged with data on Ontario hospitals, and a geo-coded measure of each respondent’s distance to the nearest general acute-care hospital. We find no evidence of a relationship between distance to the nearest hospital and either the probability of hospitalization or the annual number of hospital nights. Supplementary analyses provide insight into hypothesized pathways between distance and hospitalization. Although having a regular medical doctor is positively associated with distance to the nearest hospital, controlling for this does not affect the estimated distance-hospitalization relationship. Both the size and occupancy rate of the nearest hospital are correlated with distance and are strongly related to the probability of hospitalization, but again controlling for these factors did not affect the estimated relationship between hospital use and distance to the nearest hospital. We do, however, find a strong positive gradient between the probability of hospitalization and distance to the nearest large hospital. This gradient is driven by the fact that, for most of those far from a large hospital, the nearest hospital is small with a low occupancy rate. Calculation of the distance-related horizontal inequity index confirms no distance-related inequity in hospital utilization when distance is measured to the nearest hospital of any size; however, when distance is instead measured to the nearest large hospital, we observe large, pro-distance inequity. These distance-use relationships are not captured by traditional geographic measures based on measures of urbanization/ruralness.

Suggested Citation

  • Jeremiah Hurley & Michel Grignon & Li Wang & Tara McGrath, 2008. "Geographic Equity in Hospital Utilization: Canadian Evidence Using a Concentration-Index Approach," Centre for Health Economics and Policy Analysis Working Paper Series 2008-03, Centre for Health Economics and Policy Analysis (CHEPA), McMaster University, Hamilton, Canada.
  • Handle: RePEc:hpa:wpaper:200803
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    Keywords

    hospital utilization; equity; geography;

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