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Background: Federally qualified health centers (FQHCs) have become safety-net providers of dental services for low-income patients. The authors examined the effects of the Patient Protection and Affordable Care Act Medicaid expansions, according to level of dental benefits, on the number of visits for dental services at FQHCs., Methods: The authors used publicly available facility-level data on 1,400 FQHCs across the United States from the 2011 through 2019 Uniform Data System. The authors used an event-study difference-in-difference design to examine the effects of expanding Medicaid in 2014, according to the level of dental benefits, compared with nonexpansion states. Outcomes included the number of dental visits for any dental service and separately for preventive and other services. Regression models adjusted for the demographic characteristics of the FQHC's patient population, county-level factors, and center and year fixed effects., Results: Expanding Medicaid with extensive dental benefits has increased the number of dental visits provided at FQHCs in 2014 through 2019 from 2013 by 1,329 to 7,647 visits per FQHC on average compared with FQHCs in nonexpansion states. There was an increase in visits for both preventive and other dental services. In contrast, there was no evidence of such an increase from expanding Medicaid with limited or emergency-only dental benefits., Conclusions: Expanding Medicaid eligibility with extensive dental benefits has increased the number of dental visits at FQHCs, including for both preventive and other dental services., Practical Implications: As safety-net providers, FQHCs might be able to provide more oral health care for low-income patients after Medicaid expansions that offer extensive dental benefits., (Copyright © 2023 American Dental Association. Published by Elsevier Inc. All rights reserved.)

Background: Congress eliminated the individual mandate penalty of the Affordable Care Act (ACA) effective January 1, 2019., Objective: To examine the effects of repealing the ACA mandate penalty on private health insurance coverage and marketplace enrollment by leveraging state-based mandates in Massachusetts and New Jersey., Research Design: We employ synthetic control and difference-in-differences methods to compare insurance and enrollment changes separately in Massachusetts and New Jersey, which had insurance mandates effective in 2019, to other states without such mandates., Subjects: Adults aged 18-64 years with income of 150-300% and above 300% of the Federal Poverty Level who participated in the 2016-2019 American Community Survey (ACS) and adults aged 18-64 enrolled in insurance marketplaces based on state-level data from the 2016-2021 Marketplace Open Enrollment Period Public Use Files (MOEP-PUF)., Measures: Any insurance, individually purchased coverage, and employer-sponsored coverage from the ACS and marketplace enrollment from the MOEP-PUF., Results: Changes in any coverage, individually purchased coverage, and employer-sponsored coverage rates are relatively small (generally in the range of 1-2 percentage points) and statistically nonsignificant in both Massachusetts and New Jersey compared with states without mandates. Furthermore, there is no discernable difference by eligibility for marketplace subsidies based on income level in the ACS data. Similarly, estimates for changes in marketplace enrollment are also small overall and statistically nonsignificant., Conclusion: Private insurance coverage rates and marketplace enrollment for adults 18-64 do not appear to have changed thus far owing to the 2019 repeal of the ACA individual mandate penalty., Competing Interests: The authors declare no conflict of interest., (Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.)

We examine the Affordable Care Act Medicaid expansion effects on self-rated health status over 5 years. The study uses data from the Behavioral Risk Factor Surveillance System for 2011-2018 and a difference-in-differences design. There is improvement in health status on a 1 to 5 point scale from poor to excellent health among individuals below 100% of the federal poverty line by 0.031, 0.068, 0.031, 0.064, and 0.087 points in 2014, 2015, 2016, 2017, and 2018, respectively. Changes in 2015, 2017, and 2018 are statistically significant ( p < .05), and the 2014 change is marginally significant. The difference between 2014 and 2018 effects is statistically significant ( p < .05). In most years, we cannot distinguish changes in days not in good physical or mental health from no effect. Overall, there is only minimal evidence for effects intensifying over time, suggesting that health gains thus far have mostly occurred early on due to unmet needs among those previously uninsured.

Virginia expanded Medicaid under the Affordable Care Act beginning in January 2019, which substantially increased income eligibility up to 138% of the federal poverty level (FPL) for both childless adults and parents. In this study, we examined the effects of Virginia's Medicaid expansion in 2019 on health insurance coverage, access to care, and health status by employing a difference-in-differences and a synthetic control design. The study included data on health insurance from the 2016-2020 American Community Survey (ACS) and data on access to care and health status come from the 2016-2020 Behavioral Risk Factors Surveillance System (BRFSS). The samples from ACS and BRFSS were limited to non-elderly adults with income below 138% of the FPL. Separate models were estimated for individuals below 100% of FPL, and those within 100-138% of FPL. The Virginia Medicaid expansion was associated with a 9-11 percentage-point increase in Medicaid coverage rate and a 7-8 percentage-point increase in the insured rate among individuals below 100% FPL, in the first two years of expansion. There was a larger increase in Medicaid coverage among individuals within 100-138% of FPL which also led to a larger increase in the insured rate in 2020. Both income groups showed no changes in private coverage after the expansion in Virginia. We also found a decline in delaying necessary medical visits due to cost for individuals below 100% FPL in 2019 and for individuals within 100-138% FPL in 2020. There was overall no discernable change in health status outcomes. Virginia's 2019 Medicaid expansion substantially increased insurance coverage among poor adults with suggestive early evidence for improved access. The findings highlight the missed opportunity for other states that have not yet decided to expand their Medicaid programs to improve coverage and access among their low-income individuals.

Racial and ethnic disparities in adults' access to dental care have persisted for decades. We examined how recent Affordable Care Act Medicaid expansions that included coverage of dental services for adults affected racial and ethnic disparities in dental services use. Using Medical Expenditure Panel Survey data from the period 2011-18, we compared changes in dental services use for low-income non-Hispanic Black and Hispanic adults with changes in use for low-income non-Hispanic White adults. We found that expansions including extensive dental benefits were associated with narrowed racial and ethnic disparities in dental care visits and use of preventive and treatment services. For non-Hispanic Black and Hispanic adults, after Medicaid expansion with extensive dental benefits there was an 8-percentage-point increase in their likelihood of dental visits in a given year when compared with non-Hispanic White adults. This represents a reduction from preexpansion disparities by 75 percent for non-Hispanic Black adults and 50 percent for Hispanic adults. This disparity decline is due to both an increase in dental services use among non-Hispanic Black and Hispanic adults and little change occurring among non-Hispanic White adults. In contrast, no decline in disparities was seen in states with less generous dental benefits. Overall, rates of dental care among low-income adults continue to be low across racial and ethnic groups, indicating other key access barriers to dental care and persistent unmet oral health needs.

Objectives: This study explores the heterogeneity in effects of the 2014 Affordable Care Act (ACA) Medicaid expansions on insurance coverage, health care access, and health status of low-income women with dependent children by pre-expansion state-level income eligibility. Materials and Methods: We employ a quasiexperimental difference-in-differences design comparing outcome changes in Medicaid expansion states to nonexpansion states. We estimate effects separately for three groups of expansion states based on pre-expansion (2013) parent income eligibility: low pre-expansion eligibility (<90% of federal poverty level [FPL]), high eligibility (90% to <138% FPL), and full eligibility (≥138% FPL). Study samples include women with dependent children below 138% FPL from the 2011 to 2018 American Community Survey for the insurance outcomes, and from the 2011 to 2018 Behavioral Risk Surveillance System for the access and health outcomes. Results: There is stark heterogeneity in changes of health insurance and health care access by pre-expansion income eligibility levels. In comparison to Medicaid non-expansion states, there are large increases in insured rate (9 percentage-points) and Medicaid coverage (16 percentage-points) in expansion states with low pre-expansion eligibility. Insurance changes are much smaller in states with high or full pre-expansion eligibility. Changes in access largely mirror those in coverage. There are no significant changes in health status regardless of pre-expansion eligibility. Conclusions: The ACA Medicaid expansions increased coverage and access for low-income women with dependent children primarily in states with low pre-expansion parent eligibility, and therefore, reduced differences in these outcomes between expansion states.

Background: Low-income adults in the United States have historically had poor access to dental services largely due to limited dental coverage., Objective: We examined the effects of recent Medicaid income-eligibility expansions under the Affordable Care Act on dental visits separately for preventive care and treatments., Research Design: We used restricted data from the 2011 to 2016 Medical Expenditure Panel Survey with state geocodes. The main analytical sample included nearly 21,000 individuals who were newly eligible for Medicaid. We employed a quasi-experimental difference-in-differences design to identify the impact of the state Medicaid expansions effective in 2014 on dental services use by the level of state Medicaid dental benefit for the newly eligible., Results: Expanding Medicaid in 2014 with extensive or limited dental coverage increased preventive dental visits and use of major dental treatments by over 5 percentage-points in 2014 and 2015. The increase in preventive visits continued in 2016 in expanding states with extensive coverage, while increase in major dental treatments continued in 2016 in expanding states with limited coverage. There is some but less consistent evidence of an increase in dental treatment with emergency-only coverage., Conclusions: Medicaid expansions with dental coverage beyond emergency-only services have increased access of the newly eligible low-income adults to dental treatments and preventive services, with extensive coverage showing continuing increase in preventive services use 3 years after the expansion. With limited coverage, there is some evidence of individuals needing to stretch treatments over a longer period. Providing comprehensive dental coverage can address unmet dental needs and improve oral health among low-income adults.

Background: Recent studies of the impacts of the Affordable Care Act (ACA) Medicaid expansions on cancer screening use have mostly found insignificant effects. We posit that these findings mask meaningful heterogeneity in impacts depending on availability of primary care providers., Objective: This study examined the impacts of the ACA Medicaid expansions on cancer screening use separately by state-level supply of primary care providers., Research Design: We used data from the 2012 and 2016 Behavioral Risk Factor Surveillance System surveys to measure use of mammograms, Pap smear tests, blood stool tests, and sigmoidoscopy/colonoscopy for age groups recommended receiving these tests. The main analytical sample included 24,878-31,890 individuals with household income below 138% Federal Poverty Line. We used a difference-in-differences design comparing pre-post expansion changes in cancer screening use between expanding and nonexpanding states separately for 2 state groups defined by the median proportion of the state population residing in primary health professional shortage areas: low primary care provider supply (above median) and high supply (below median)., Results: Medicaid expansions were associated with significant increases in mammograms (11.4 percentage-points), Pap smear tests (6.9 percentage-points), and sigmoidoscopy/colonoscopy use (8.3 percentage-points) in states with high supply of primary care providers. In contrast, effects were small and insignificant in low supply states., Conclusions: ACA Medicaid expansions were associated with increased cancer screening use only in states with high supply of primary care providers. Improving access for Medicaid beneficiaries in provider shortage areas may require coupling coverage expansions with supply-side interventions to increase provider availability.

Background: Prior research of the impacts of the Patient Protection and Affordable Care Act (PPACA) on children's health coverage has been largely descriptive and focused on the Medicaid expansions., Objective: This study examined the causal impacts of the PPACA Medicaid expansions and of the PPACA as a whole on children's health coverage through 2016., Research Design: We utilized quasiexperimental difference in differences designs to estimate the Medicaid expansion and overall PPACA effects. The first model compared coverage changes between Medicaid expanding and nonexpanding states by household income level. The second model identified the overall PPACA effects by estimating coverage changes across differences in pre-PPACA area-level uninsured rates in expanding states for which the identifying assumptions were valid. We used data from the American Community Survey for years 2011 through 2016 for 3,630,988 children aged 0-18 years living in the 50 states and District of Columbia., Results: The PPACA Medicaid expansions led to gains in public coverage for children at ≤405% federal poverty line especially in 2015-2016. Gains were largest for children at 138%-255% federal poverty line (~4 percentage-point increase in 2016). These gains however were mostly due to switching from private to public coverage (ie, crowd-out effects). As a whole however, the PPACA reduced children's uninsured rate in Medicaid-expanding states by about 3 percentage-points in 2016., Conclusions: The PPACA resulted in a meaningful decline in children's uninsured rate in Medicaid-expanding states. PPACA provisions targeting private coverage take-up offset crowd-out effects of the Medicaid expansions resulting in lower children's uninsured rates.