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Identifying homelessness using health information exchange data.

John Zech1, Gregg Husk2, Thomas Moore3

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|February 12, 2015
PubMed
Summary

Identifying homeless patients using health information exchange data revealed approximately 1% were likely homeless. Registration practices varied significantly, highlighting a need for standardized data collection to improve care coordination for this vulnerable population.

Keywords:
health care costshealth care reformhealth information exchangehomelessness

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Area of Science:

  • Health Informatics
  • Public Health
  • Healthcare Access

Background:

  • Homeless patients face significant health disparities and higher healthcare utilization.
  • Effective care coordination for homeless individuals requires systematic identification methods.
  • Federal interest is growing in addressing the healthcare needs of the homeless population.

Purpose of the Study:

  • To analyze address data from a health information exchange (Healthix) to identify patterns indicative of homelessness.
  • To assess the feasibility of using existing health data for identifying homeless patient populations.

Main Methods:

  • Utilized address data from Healthix, a New York City health information exchange.
  • Categorized patients as likely homeless based on registration at hospitals, shelters, places of worship, or addresses with homelessness-related keywords.
  • Analyzed data from September 30, 2008, to July 19, 2013.

Main Results:

  • Identified 78,460 out of 7,854,927 patients (1%) as likely homeless.
  • Observed considerable variation in patient registration practices across different healthcare sites.
  • Highlighted the potential of health information exchange data for identifying vulnerable populations.

Conclusions:

  • Health information exchange data can identify a substantial number of likely homeless patients.
  • Significant variations in registration practices necessitate improvements for accurate patient identification.
  • Standardized data fields for housing status are recommended for better record matching and care coordination.
  • Further validation is required to confirm the housing status of identified individuals.