Medicaid coverage is not enough to manage diabetes, shows study

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Medicaid expansion through the Affordable Care Act has insured millions of low-income people in the United States, improving outcomes for patients with many different diseases.

But expansion alone has not been enough to improve outcomes for patients with diabetes, according to a new Boston University School of Public Health (BUSPH) study.

Published in the American Journal of Preventive Medicine, the study finds an increase in insurance coverage, ability to see a physician, and foot examinations among patients with diabetes in states that expanded Medicaid.

However, the study did not find significant changes in follow-up examinations, care, or treatment for diabetes, pointing to the need for other structural changes.

"There are likely many steps between having health insurance and successfully getting treatment for diabetes--including providers needing to recognize the importance of screening and patients needing to implement rigorous lifestyle changes," says study lead author Dr. Lily Yan, who was a master of science in population health student at BUSPH while working on the study and is now a global health research fellow at Weill Cornell Medicine.

"While having health insurance through a program like Medicaid expansion may be necessary for better health, it may not be sufficient alone."

The researchers used data from the Behavioral Risk Factor Surveillance System from 2008 through 2018 to compare 24 states that expanded Medicaid as of 2018 and 16 states that had not. The study included all non-pregnant, Medicaid-eligible residents of these states with self-reported diabetes.

The study examined diabetes outcomes using the "continuum of care" model of successful diabetes management: Screening would ideally lead to diagnosis, then linkage to care for the disease, then treatment, and ultimately control of the disease.

The researchers found improvements the beginning of the continuum in the first years following a state's Medicaid expansion: Health insurance coverage rates for people with diabetes increased by 7.2 percentage points, and as a result the ability to afford a physician increased by 5.5 percentage points.

This in turn led to a 5.3-percentage point increase in diabetic foot examinations by healthcare providers. A few years after expansion, the researchers also found a 7.2-percentage point increase in self-administered foot examinations.

The researchers also found an increase in linkage to care among Hispanic patients. However, the researchers found no statistically significant improvement overall in linkage to care, lifestyle changes and self-monitoring of conditions, or treatment.

Medicaid coverage on its own is not enough to manage diabetes. Our policymakers should think about insurance coverage and beyond: supporting behavioral interventions, bolstering healthcare workforces, and addressing the underlying socioeconomic determinants of health."

Dr. Kiersten Strombotne, Study Senior Author and Assistant Professor, Health Law, Policy & Management, Boston University School of Public Health

Journal reference:

Yan, L. D., et al. (2020) Impact of Expanded Medicaid Eligibility on the Diabetes Continuum of Care Among Low-Income Adults: A Difference-in-Differences Analysis. American Journal of Preventive Medicine.


The opinions expressed here are the views of the writer and do not necessarily reflect the views and opinions of News Medical.
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