Impact of state Medicaid expansion on cross‐sector health and social service networks: Evidence from a longitudinal cohort study

Author:

Hogg‐Graham Rachel1ORCID,Mamaril Cezar B.2ORCID,Benitez Joseph A.13ORCID,Gatton Kelsey1,Mays Glen P.4

Affiliation:

1. Department of Health Management and Policy College of Public Health, University of Kentucky Lexington Kentucky USA

2. Department of Kinesiology and Community Health, College of Applied Health Sciences University of Illinois at Urbana‐Champaign Champaign Illinois USA

3. Department of Health Management and Policy, College of Public Health University of Kentucky Lexington Kentucky USA

4. Department of Health Systems, Management, and Policy, Colorado School of Public Health University of Colorado Anschutz Campus Aurora Colorado USA

Abstract

AbstractObjectiveTo examine the impact of state Medicaid expansion on the delivery of population health activities in cross‐sector health and social services networks. Community networks are multisector, interorganizational networks that provide services ranging from the direct provision of individual social services to the implementation of population‐level initiatives addressing community outcomes.Data SourcesWe used data measuring the composition of cross‐sector population health networks 2006–2018 National Longitudinal Survey of Public Health Systems (NALSYS) linked with the Area Health Resource File.Study DesignA difference‐in‐differences approach was used to examine the impact of expansion on organization engagement in population health activities and network structure.Data Collection/Extraction MethodsStratified random sampling of local public health jurisdictions in the United States. We restricted our data to jurisdictions serving populations of 100,000 or more and states that had NALSYS observations across all time periods, resulting in a final sample size of 667.Principal FindingsResults from our adjusted difference‐in‐differences estimates indicated that Medicaid expansion was associated with a 2.3 percentage point increase in the density of population health networks (p < 0.10). Communities in states that expanded Medicaid experienced significant increases in the participation of local public health, local government, hospital, nonprofit, insurer, and K‐12 schools. Of the organizations with significant increases in expansion communities, nonprofits (7.7 percentage points, p < 0.01), local public health agencies (6.5 percentage points, p < 0.01), hospitals (5.8 percentage points, p < 0.01), and local government agencies (6.0 percentage points, p < 0.05) had the largest gains.ConclusionsOur study found increases in cross‐sector participation in population health networks in states that expanded Medicaid compared with nonexpansion states, suggesting that additional coverage gains are associated with positive changes in population health network structure.

Funder

Agency for Healthcare Research and Quality

Robert Wood Johnson Foundation

Publisher

Wiley

Subject

Health Policy

Reference35 articles.

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