Scientific Publications Database

Article Title: Predicting High Health Care Resource Utilization in a Single-payer Public Health Care System: Development and Validation of the High Resource User Population Risk Tool
Authors: Rosella, Laura C.; Kornas, Kathy; Yao, Zhan; Manuel, Douglas G.; Bornbaum, Catherine; Fransoo, Randall; Stukel, Therese
Journal: MEDICAL CARE Volume 56 Issue 10
Date of Publication:2018
Abstract:
Background:A large proportion of health care spending is incurred by a small proportion of the population. Population-based health planning tools that consider both the clinical and upstream determinants of high resource users (HRU) of the health system are lacking.Objective:To develop and validate the High Resource User Population Risk Tool (HRUPoRT), a predictive model of adults that will become the top 5% of health care users over a 5-year period, based on self-reported clinical, sociodemographic, and health behavioral predictors in population survey data.Research Design:The HRUPoRT model was developed in a prospective cohort design using the combined 2005 and 2007/2008 Canadian Community Health Surveys (CCHS) (N=58,617), and validated using the external 2009/2010 CCHS cohort (N=28,721). Health care utilization for each of the 5 years following CCHS interview date were determined by applying a person-centered costing algorithm to the linked health administrative databases. Discrimination and calibration of the model were assessed using c-statistic and Hosmer-Lemeshow (HL) (2) statistic.Results:The best prediction model for 5-year transition to HRU status included 12 predictors and had good discrimination (c-statistic=0.8213) and calibration (HL (2)=18.71) in the development cohort. The model performed similarly in the validation cohort (c-statistic=0.8171; HL (2)=19.95). The strongest predictors in the HRUPoRT model were age, perceived general health, and body mass index.Conclusions:HRUPoRT can accurately project the proportion of individuals in the population that will become a HRU over 5 years. HRUPoRT can be applied to inform health resource planning and prevention strategies at the community level.