The Relationship Between Children's Medicaid/CHIP Income Eligibility Expansions and Children's Medicaid/CHIP Participation Rates
Wagnerman, Karina Haym
Between 2005 and 2012, there was a wave of state income eligibility expansions for children in Medicaid and the Children's Health Insurance Program (CHIP) with most occurring between 2007 and 2009. This study uses state-year panel data and a fixed effects specification to study the relationship between children's Medicaid/CHIP income eligibility expansions and children's Medicaid/CHIP participation rates. The analysis indicates that income eligibility expansions in Medicaid/CHIP have a small effect, if any, on program participation. Any potential impact seems to be greatest in states where it is most needed; specifically, in those states with a higher uninsurance rate among children. State policymakers may find these results valuable as they are considering whether to expand Medicaid under the Affordable Care Act, which allows states to expand Medicaid coverage to all low-income Americans in households with incomes below 138% of the federal poverty line (FPL).
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