Following the Patient Protection and Affordable Care Act, Medicaid eligibility in the United States expanded to include low-income adults. One key challenge for organizations and providers serving the Medicaid population was predicting if and how this change would alter the composition of enrollees. This study characterized demographics, socioeconomic challenges, and health of the expansion and non-expansion Medicaid populations in a metropolitan area in Oregon using a survey and Medicaid claims. Results showed that the expansion population has more men and non-English speakers than the non-expansion population. They also have greater education and employment, but face similar socioeconomic challenges including struggling to meet basic needs and housing instability. This study also found comparable self-reported physical and mental health, but lower prevalence of physical or mental health diagnoses and several ambulatory care reactive conditions including hypertension, obesity, and type 2 diabetes. The authors concluded that expansion and non-expansion populations differ in sex, language, education, employment, and health, but they face similar socioeconomic challenges. This information is useful for organizations coordinating and providing care to Medicaid members so they can understand the needs of the population and set appropriate population health management strategies.
Keywords: Affordable Care Act; Coordinated Care Organization; Medicaid; Oregon; health policy; public health; socioeconomic challenges.