National Healthcare Quality and Disparities Report
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AHRQ Research Studies
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Research Studies is a compilation of published research articles funded by AHRQ or authored by AHRQ researchers.
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1 to 2 of 2 Research Studies DisplayedMellor JM, McInerney M, Garrow RC
The impact of Medicaid expansion on spending and utilization by older low-income Medicare beneficiaries.
This study examined indirect spillover effects of Affordable Care Act (ACA) Medicaid expansions to working-age adults on health care coverage, spending, and utilization by older low-income Medicare beneficiaries. The authors used data from the 2010-2018 Health and Retirement Study survey linked to annual Medicare beneficiary summary files. They estimated individual-level difference-in-differences models of total spending for inpatient, institutional outpatient, physician/professional provider services; inpatient stays, outpatient visits, physician visits; and Medicaid and Part A and B Medicare coverage. They also compared changes in outcomes before and after Medicaid expansion in expansion versus nonexpansion states. The sample included low-income respondents aged 69 and older with linked Medicare data, enrolled in full-year traditional Medicare, and living in the community. ACA Medicaid expansion was associated with a 9.8 percentage point increase in Medicaid coverage, a 4.4 percentage point increase in having any institutional outpatient spending, and a positive but statistically insignificant 2.4 percentage point change in Part B enrollment.
AHRQ-funded; HS025422.
Citation: Mellor JM, McInerney M, Garrow RC .
The impact of Medicaid expansion on spending and utilization by older low-income Medicare beneficiaries.
Health Serv Res 2023 Oct; 58(5):1024-34. doi: 10.1111/1475-6773.14155..
Keywords: Medicaid, Medicare, Low-Income, Healthcare Utilization, Healthcare Costs, Health Insurance
Ndumele CD, Sommers BD, Trivedi AN
The ACA's 65th birthday challenge: moving from Medicaid to Medicare.
Following the Affordable Care Act’s coverage expansion, many newly-insured older enrollees will lose Medicaid coverage on their 65th birthday and transition from Medicaid to Medicare as their primary insurer. This article discusses the transition in primary health insurance coverage that includes changes to benefits, patient cost-sharing, and provider reimbursement, which could have profound consequences on the use of health services and associated health outcomes for low-income seniors.
AHRQ-funded; HS021291.
Citation: Ndumele CD, Sommers BD, Trivedi AN .
The ACA's 65th birthday challenge: moving from Medicaid to Medicare.
J Gen Intern Med 2015 Nov;30(11):1704-6. doi: 10.1007/s11606-015-3328-0..
Keywords: Health Insurance, Medicare, Elderly, Low-Income