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Research Letter |

Changes in Insurance Coverage Among Hospitalized Nonelderly Adults After Medicaid Expansion in Michigan

Matthew M. Davis, MD, MAPP1; Achamyeleh Gebremariam, MS2; John Z. Ayanian, MD, MPP1
[+] Author Affiliations
1Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor
2Child Health Evaluation and Research Unit, University of Michigan Health System, Ann Arbor
JAMA. 2016;315(23):2617-2618. doi:10.1001/jama.2016.6303.
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This study uses Michigan Inpatient Database data to describe proportions of insured and uninsured, nonelderly patients hospitalized in Michigan before and after Medicaid expansion in 2014.

Expanded insurance coverage through the Affordable Care Act (ACA) may reduce the burden of uncompensated care for hospitals. Recent reports have indicated that rates of uninsurance among hospitalized adults have declined as coverage expanded in 2014.14 However, no peer-reviewed publications have assessed statewide trends in coverage with ACA-sponsored expansion and also examined between-hospital differences in coverage trends.

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Changes in the Proportion of Discharges for Nonelderly Adults Discharged From 130 Acute Care Hospitals in Michigan: 2014 vs 2012-2013

For each hospital, the value shown was calculated as [percentage of hospital discharges for uninsured patients in 2014] − [mean percentage of hospital discharges for uninsured patients in 2012 and 2013].

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