Health

Expanding Medicaid eligibility may improve blood pressure, glucose control


In the 26 states that expanded Medicaid eligibility by January 2014, federally qualified health centers observed reductions in uninsured patients and improvements in hypertension and glucose measurements, particularly among Black and Hispanic patients.

Medicaid expansion under the Affordable Care Act has been linked with better quality of care and service capacity at federally qualified heath centers (FQHCs), but there is little evidence of the long-term impact of this expansion on FQHCs nationwide. A new study led by a School of Public Health researcher has found that Medicaid expansion is associated with a reduction in uninsurance, as well as improvements in blood pressure and glucose control measures, at FQHCs in the five years after the expansions were implemented. These improvements were highest among Black and Hispanic patients.

According to the study, published in the journal JAMA Health Forum, FQHCs in the 26 states (including Washington, DC) that expanded Medicaid eligibility by January 2014 experienced a 9.2-percentage point (PP) reduction in uninsured patients compared to FQHCs in states that chose not to expand Medicaid, from January 2014 to December 2018. The researchers also observed a 1.6-PP and 1.8-PP increase in blood pressure and glucose control measurements, respectively, in expansion states compared to nonexpansion states. The improvements were highest among Black and Hispanic patients.

“Our results suggest that over the longer-run, expanding Medicaid eligibility may improve key chronic disease health outcomes for low-income, marginalized populations, which is an important consideration for the 12 states that have not yet adopted Medicaid expansion,” says Megan Cole Brahim, lead author and an assistant professor of health law, policy & management. FHQCs serve 1 in 5 Medicaid enrollees and 1 in 3 people whose income falls below the federal poverty line.

Cole and colleagues analyzed national data on annual patient and operational characteristics, quality-of-care measures, and more for 946 FQHCs in Medicaid expansion and nonexpansion states, serving nearly 19 million patients per year. In the expansion states, the uninsurance rate decreased from approximately 42 percent in 2012 to 21 percent in 2018, while the uninsured rate for patients in nonexpansion states declined from 52 percent to 42 percent.

The researchers observed significant associations between expansion and health outcome measures over the long versus short-term during the five-year period. By year 5, expansion was associated with a 2.4-PP overall increase in hypertension control in comparison to nonexpansion states. The comparative increase was even steeper among Black patients, at 3.4-PP, and Hispanic patients, at 3.0-PP. Similarly, improvements in diabetes control in expansion states-;measured by the percentage of patients with hemoglobin A1c (blood sugar levels) of 9 percent of less-;was comparatively higher among Black patients, at 3.9-PP, and Hispanic patients, at 2.8-PP, versus the overall five-year comparative increase of 1.8-PP.

Once a patient gains health insurance coverage, associated health outcomes likely don’t improve overnight. It takes time for patients to become better connected to care and care management, while gaining access to prescription medications. It also takes time for FQHCs to invest new patient revenue into things that improve quality of care.”


Megan Cole Brahim, Lead Author

Despite these longer-term improvements, racial and ethnic disparities among Black and Hispanic populations persist post-expansion, so efforts to expand insurance coverage should be accompanied by policy and programmatic changes that address structural racism and other systemic inequities, the researchers say.

“We have a good sense that these disparities are reflective of the political, economic, and social systems we live in that do not currently provide equal opportunities for health on the basis of skin color,” says co-author Timothy Levengood, a doctoral student in the Department of Health Law, Policy & Management. “Whether you can afford to regularly see a doctor and keep these conditions in check contributes substantially to whether you will develop these chronic conditions or die from them. It’s important to study relevant policy changes to these systems to combat these disparities and to craft a more equitable society for all Americans.”

Source:

Journal reference:

Cole, M.B., et al. (2021) Association of Medicaid Expansion with Five-Year Changes in Hypertension and Diabetes Outcomes at Federally Qualified Health Centers. JAMA Health Forum. doi.org/10.1001/jamahealthforum.2021.2375.

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