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Cost Patterns of Multiple Chronic Conditions: A Novel Modeling Approach Using a Condition Hierarchy

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  • Lida Anna Apergi

    (Robert H. Smith School of Business, University of Maryland, College Park, Maryland 20742)

  • Margrét Vilborg Bjarnadóttir

    (Robert H. Smith School of Business, University of Maryland, College Park, Maryland 20742)

  • John S. Baras

    (Institute for Systems Research, University of Maryland, College Park, Maryland 20740)

  • Bruce L. Golden

    (Robert H. Smith School of Business, University of Maryland, College Park, Maryland 20742)

Abstract

Healthcare cost predictions are widely used throughout the healthcare system. However, predicting these costs is complex because of both uncertainty and the complex interactions of multiple chronic diseases: chronic disease treatment decisions related to one condition are impacted by the presence of the other conditions. We propose a novel modeling approach inspired by backward elimination, designed to minimize information loss. Our approach is based on a cost hierarchy: the cost of each condition is modeled as a function of the number of other, more expensive chronic conditions the individual member has. Using this approach, we estimate the additive cost of chronic diseases and study their cost patterns. Using large-scale claims data collected from 2007 to 2012, we identify members that suffer from one or more chronic conditions and estimate their total 2012 healthcare expenditures. We apply regression analysis and clustering to characterize the cost patterns of 69 chronic conditions. We observe that the estimated cost of some conditions (for example, organic brain problem) decreases as the member’s number of more expensive chronic conditions increases. Other conditions, such as obesity and paralysis, demonstrate the opposite pattern; their contribution to the overall cost increases as the member’s number of other more serious chronic conditions increases. The modeling framework allows us to account for the complex interactions of multimorbidity and healthcare costs and, therefore, offers a deeper and more nuanced understanding of the cost burden of chronic conditions, which can be utilized by practitioners and policy makers to plan, design better intervention, and identify subpopulations that require additional resources. More broadly, our hierarchical model approach captures complex interactions and can be applied to improve decision making when the enumeration of all possible factor combinations is not possible, for example, in financial risk scoring and pay structure design.

Suggested Citation

  • Lida Anna Apergi & Margrét Vilborg Bjarnadóttir & John S. Baras & Bruce L. Golden, 2024. "Cost Patterns of Multiple Chronic Conditions: A Novel Modeling Approach Using a Condition Hierarchy," INFORMS Joural on Data Science, INFORMS, vol. 3(1), pages 49-67, April.
  • Handle: RePEc:inm:orijds:v:3:y:2024:i:1:p:49-67
    DOI: 10.1287/ijds.2022.0010
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