National Healthcare Quality and Disparities Report
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AHRQ Research Studies Date
Topics
- Access to Care (12)
- Ambulatory Care and Surgery (1)
- Behavioral Health (2)
- Cancer (2)
- Cancer: Breast Cancer (2)
- Cancer: Colorectal Cancer (1)
- Cancer: Lung Cancer (1)
- Cardiovascular Conditions (1)
- Case Study (1)
- Children's Health Insurance Program (CHIP) (2)
- Children/Adolescents (4)
- Chronic Conditions (1)
- Community Partnerships (1)
- Dental and Oral Health (1)
- Healthcare Costs (3)
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- Healthcare Utilization (3)
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- Health Services Research (HSR) (1)
- Low-Income (3)
- Maternal Care (1)
- (-) Medicaid (26)
- Medical Expenditure Panel Survey (MEPS) (3)
- Medicare (1)
- Medication (3)
- Patient-Centered Outcomes Research (1)
- Payment (1)
- (-) Policy (26)
- Pregnancy (1)
- Quality Measures (1)
- Quality of Care (1)
- Racial and Ethnic Minorities (1)
- Sexual Health (1)
- Substance Abuse (1)
- Surgery (1)
- Tobacco Use (1)
- Tobacco Use: Smoking Cessation (1)
- Uninsured (9)
- Women (3)
- Young Adults (1)
AHRQ Research Studies
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Research Studies is a compilation of published research articles funded by AHRQ or authored by AHRQ researchers.
Results
1 to 25 of 26 Research Studies DisplayedLarson AE, Hoopes M, Angier H
Private/marketplace insurance in community health centers 5 years post-affordable care act in Medicaid expansion and non-expansion states.
This study compared differences in private/marketplace insurance in community health centers (CHCs) 5 years post-Affordable Care Act (ACA) in Medicaid expansion and non-expansion states. Electronic health record data from 702,663 patients in clinics across 20 states was used to explore trends in private/market insurance post-expansion and whether CHC patients retain private/marketplace insurance. The authors found that patients in non-expansion state CHCs relied more heavily on private/marketplace insurance than patients in expansive states and had increased visits from 2014 through 2018. There was a more pronounced seasonal variation in private/marketplace-insured visits too. A greater percentage of those who in non-expansion states did not retain private/marketplace insurance become uninsured, while those in expansion states gained other types of health insurance.
AHRQ-funded; HS024270.
Citation: Larson AE, Hoopes M, Angier H .
Private/marketplace insurance in community health centers 5 years post-affordable care act in Medicaid expansion and non-expansion states.
Prev Med 2020 Dec;141:106271. doi: 10.1016/j.ypmed.2020.106271..
Keywords: Medicaid, Health Insurance, Access to Care, Policy
Hudson JL, Moriya AS
AHRQ Author: Hudson JL
The role of marketplace policy on welcome mat effects for children eligible for Medicaid or the Children's Health Insurance Program.
This study examined the role of marketplace policy on “welcome mat” effects for children eligible for Medicaid or the Children’s Health Insurance Program (CHIP). Data from the American Community Survey from 2013-2018 was used to estimate the relationship between Marketplace policy and increases in Medicaid/CHIP coverage among pre-ACA eligible children after the implementation of the Affordable Care Act (ACA). The sample included non-disabled citizen children ages 0-18 at 139-250% federal poverty level who were Medicaid/CHIP-eligible before and after implementation of the ACA. Marketplace policies and enrollment were compared in expansion states versus non-expansion states. Public coverage did increase more in states that empowered their Marketplace to enroll publicly-eligible applicants directly into Medicaid/CHIP. This was driven by enrollment policy, not by choice of state-based versus federal-based Marketplaces. Welcome mats were largest in expansion states and increases ranged from 9 to 13 percentage points in enrollment.
AHRQ-authored.
Citation: Hudson JL, Moriya AS .
The role of marketplace policy on welcome mat effects for children eligible for Medicaid or the Children's Health Insurance Program.
Inquiry 2020 Jan-Dec;57:46958020952920. doi: 10.1177/0046958020952920..
Keywords: Children/Adolescents, Children's Health Insurance Program (CHIP), Medicaid, Health Insurance, Policy, Uninsured, Access to Care
Khouja T, Burgette JM, Donohue JM
Association between Medicaid expansion, dental coverage policies for adults, and children's receipt of preventive dental services.
Researchers examined whether low-income children's use of preventive dental services is linked to variation in state Medicaid policies that affect parents' access to dental care in Medicaid. Using MEPS data along with Area Health Resources File and Medicaid adult dental coverage policies, they found no change in children's receipt of preventive dental care associated with Medicaid expansions in states that covered vs did not cover preventive dental services for adults. They concluded that factors other than parental access to dental benefits through Medicaid may be more salient determinants of preventive dental care use among low-income children.
AHRQ-funded; HS026727.
Citation: Khouja T, Burgette JM, Donohue JM .
Association between Medicaid expansion, dental coverage policies for adults, and children's receipt of preventive dental services.
Health Serv Res 2020 Oct;55(5):642-50. doi: 10.1111/1475-6773.13324..
Keywords: Medical Expenditure Panel Survey (MEPS), Children/Adolescents, Dental and Oral Health, Medicaid, Health Insurance, Low-Income, Access to Care, Policy
Roberts ET, Nimgaonkar A, Aarons J
New evidence of state variation in Medicaid payment policies for dual Medicare-Medicaid enrollees.
The authors developed the first longitudinal database of state Medicaid policies for paying the cost sharing in Medicare Part B for services provided to dual Medicare-Medicaid enrollees (duals), and an index summarizing the impact of these policies on payments for physician office services. Information from 2004-2018 was consolidated from online Medicaid policy documents, state laws, and policy data reported to them by state Medicaid programs. The database showed that in 2018 42 states had policies to limit Medicaid payments of Medicare cost sharing when Medicaid’s fee schedule was lower than Medicare’s. This was an increase from 36 such states in 2004. In most states, combined Medicare and Medicare payments for evaluation and management services provided to duals averaged 78% of the Medicare allowed amount for these services.
AHRQ-funded; HS026727.
Citation: Roberts ET, Nimgaonkar A, Aarons J .
New evidence of state variation in Medicaid payment policies for dual Medicare-Medicaid enrollees.
Health Serv Res 2020 Oct;55(5):701-09. doi: 10.1111/1475-6773.13545..
Keywords: Medicaid, Medicare, Payment, Policy, Healthcare Costs, Health Insurance
Cha P, Brindis CD
Early Affordable Care Act Medicaid: coverage effects for low- and moderate-income young adults.
This study examined the effects of early Medicaid expansions on low- and moderate-income young adults. They used the American Community Survey 2008-2013 to study three early expansion states: California, Connecticut and Minnesota. Results shows that Medicaid expansion reduced uninsurance in all three states and increased public insurance in California and Minnesota. Young men benefitted more than young women, who historically tend to be uninsured.
AHRQ-funded; HS022241.
Citation: Cha P, Brindis CD .
Early Affordable Care Act Medicaid: coverage effects for low- and moderate-income young adults.
J Adolesc Health 2020 Sep;67(3):425-31. doi: 10.1016/j.jadohealth.2020.05.029..
Keywords: Young Adults, Policy, Medicaid, Uninsured, Access to Care
Zuvekas SH, McClellan CB, Ali MM
AHRQ Author: Zuvekas SH, McClellan CB
Medicaid expansion and health insurance coverage and treatment utilization among individuals with a mental health condition.
AHRQ-authored.
Citation: Zuvekas SH, McClellan CB, Ali MM .
Medicaid expansion and health insurance coverage and treatment utilization among individuals with a mental health condition.
J Ment Health Policy Econ 2020 Sep 1;23(3):151-82..
Keywords: Medical Expenditure Panel Survey (MEPS), Behavioral Health, Medicaid, Health Insurance, Access to Care, Healthcare Utilization, Policy, Uninsured
Akincigil A, Mackie TI, Cook S
Effectiveness of mandatory peer review to reduce antipsychotic prescriptions for Medicaid-insured children.
This retrospective observation study examined the effectiveness of mandatory peer review to reduce antipsychotic prescriptions for Medicaid-insured children. Data was analyzed from Medicaid Analytical eXtracts (MAX) with administrative claims from 2006-2011 in Washington State. Within two years of policy implementation, prescription prevalence decreased from 6.17 to 4.04 while the synthetic control group remained stable at 6.47. The results show the effectiveness of the peer review program.
AHRQ-funded; HS026001.
Citation: Akincigil A, Mackie TI, Cook S .
Effectiveness of mandatory peer review to reduce antipsychotic prescriptions for Medicaid-insured children.
Health Serv Res 2020 Aug;55(4):596-603. doi: 10.1111/1475-6773.13297..
Keywords: Children/Adolescents, Medication, Medicaid, Policy
Myers CD, Gordon HG, Kim HM
Does group deliberation mobilize? The effect of public deliberation on willingness to participate in politics.
Proponents of public deliberation suggest that engaging in deliberation increases deliberators' subsequent participation in other forms of politics. In this paper, the authors evaluate this "deliberative participation hypothesis" using data drawn from a deliberative field experiment in which members of medically underserved communities in Michigan deliberated in small groups about the design of that state's Medicaid program.
AHRQ-funded; HS023566.
Citation: Myers CD, Gordon HG, Kim HM .
Does group deliberation mobilize? The effect of public deliberation on willingness to participate in politics.
Polit Behav 2020 Jun;42(2):557-80. doi: 10.1007/s11109-018-9507-z..
Keywords: Policy, Medicaid
Darney BG, Jacob RL, Hoopes M
Evaluation of Medicaid expansion under the Affordable Care Act and contraceptive care in US community health centers.
This study examined whether Medicaid expansion under the Affordable Care Act increased contraceptive use for women who are underserved in the US health care safety net. The authors used electronic health record (EHR) data from a clinical research network of community health centers across 24 states. The sample included all female patients ages 15 to 44 years at risk for pregnancy with an ambulatory care visit. The study compared receipt of contraception before (2013) vs immediately after (2014) and then in 2016 after a longer period of Medicaid expansion. The sample included 310,132 women from expansion states and 234,508 women from nonexpansion states. There was an associated increase in long-acting reversible contraceptive method prescriptions among women in the expansion states, with adolescents having the largest increase.
AHRQ-funded; HS025155.
Citation: Darney BG, Jacob RL, Hoopes M .
Evaluation of Medicaid expansion under the Affordable Care Act and contraceptive care in US community health centers.
JAMA Netw Open 2020 Jun;3(6):e206874. doi: 10.1001/jamanetworkopen.2020.6874..
Keywords: Medicaid, Women, Policy, Sexual Health
Maclean JC, Halpern MT, Hill SC
AHRQ Author: Hill SC
The effect of Medicaid expansion on prescriptions for breast cancer hormonal therapy medications.
The purpose of this study was to quantify the effects of the Affordable Care Act Medicaid expansion on prescriptions for effective breast cancer hormonal therapies (tamoxifen and aromatase inhibitors) among Medicaid enrollees. Data from the Medicaid State Drug Utilization Database was used. Findings showed that Medicaid expansion may have had a meaningful impact on the ability of lower-income women to access effective hormonal therapies used to treat breast cancer.
AHRQ-authored.
Citation: Maclean JC, Halpern MT, Hill SC .
The effect of Medicaid expansion on prescriptions for breast cancer hormonal therapy medications.
Health Serv Res 2020 Jun;55(3):399-410. doi: 10.1111/1475-6773.13289..
Keywords: Medicaid, Cancer: Breast Cancer, Cancer, Medication, Policy, Women, Healthcare Utilization, Access to Care, Health Insurance
Bailey SR, Marino M, Ezekiel-Herrera D
Tobacco cessation in Affordable Care Act Medicaid expansion states versus non-expansion states.
This study examined whether states that expanded Medicaid eligibility under the ACA had increased smoking quit rates, tobacco cessation medication orders, and greater health care utilization compared to patients in non-expansion states. The researchers used electronic health record (EHR) data from 219 community health centers (CHCs) in 10 states that expanded Medicaid as of January 2014. They identified patients aged 19-64 with tobacco use status in their records within six months prior to ACA Medicaid expansion and 1 or more visits. They found that patients in expansion states had increased adjusted odds of quitting, having a medication ordered and having follow-up visits compared to patients in non-expansion states.
AHRQ-funded; HS024270.
Citation: Bailey SR, Marino M, Ezekiel-Herrera D .
Tobacco cessation in Affordable Care Act Medicaid expansion states versus non-expansion states.
Nicotine Tob Res 2020 Jun;22(6):1016-22. doi: 10.1093/ntr/ntz087..
Keywords: Tobacco Use: Smoking Cessation, Tobacco Use, Substance Abuse, Medication, Medicaid, Policy, Healthcare Utilization, Access to Care, Health Insurance
Tilhou AS, Huguet N, DeVoe J
The Affordable Care Act Medicaid Expansion positively impacted community health centers and their patients.
In this paper, the investigators summarized their results to-date as experts in investigating the impact of the Patient Protection and Affordable Care Act (ACA) Medicaid expansion on Community Health Centers (CHCs) and the patients they serve. They found the ACA Medicaid expansion increased access to care and preventive services, primarily in Medicaid expansion states. Rates of physical and mental health conditions rose substantially from pre- to post-ACA in expansion states, suggesting underdiagnosis pre-ACA.
AHRQ-funded; HS024270.
Citation: Tilhou AS, Huguet N, DeVoe J .
The Affordable Care Act Medicaid Expansion positively impacted community health centers and their patients.
J Gen Intern Med 2020 Apr;35(4):1292-95. doi: 10.1007/s11606-019-05571-w..
Keywords: Policy, Medicaid, Access to Care, Uninsured, Health Insurance
Takvorian SU, Oganisian A, Mamtani R
Association of Medicaid expansion under the Affordable Care Act with insurance status, cancer stage, and timely treatment among patients with breast, colon, and lung cancer.
The effect of the Patient Protection and Affordable Care Act's Medicaid expansion on cancer care delivery and outcomes is unknown. Patients with cancer are a high-risk group for whom treatment delays are particularly detrimental. The objective of this study was to examine the association between Medicaid expansion and changes in insurance status, stage at diagnosis, and timely treatment among patients with incident breast, colon, and non-small cell lung cancer.
AHRQ-funded; HS026116.
Citation: Takvorian SU, Oganisian A, Mamtani R .
Association of Medicaid expansion under the Affordable Care Act with insurance status, cancer stage, and timely treatment among patients with breast, colon, and lung cancer.
JAMA Netw Open 2020 Feb 5;3(2):e1921653. doi: 10.1001/jamanetworkopen.2019.21653.
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Keywords: Cancer: Breast Cancer, Cancer: Colorectal Cancer, Cancer: Lung Cancer, Cancer, Health Insurance, Medicaid, Policy, Health Services Research (HSR)
Gordon SH, Sommers BD, Wilson IB
Effects of Medicaid expansion on postpartum coverage and outpatient utilization.
Timely postpartum care is associated with lower maternal morbidity and mortality, yet fewer than half of Medicaid beneficiaries attend a postpartum visit. Using Medicaid claims data for 2013-2015 from Colorado, which expanded Medicaid under the Affordable Care Act, and Utah, which did not, the authors conclude that expansion may promote the stability of postpartum coverage and increase the use of postpartum outpatient care in the Medicaid program.
AHRQ-funded; HS025560.
Citation: Gordon SH, Sommers BD, Wilson IB .
Effects of Medicaid expansion on postpartum coverage and outpatient utilization.
Health Aff 2020 Jan;39(1):77-84. doi: 10.1377/hlthaff.2019.00547..
Keywords: Medicaid, Pregnancy, Women, Access to Care, Maternal Care, Ambulatory Care and Surgery, Policy, Healthcare Delivery
DeLia D, Yedidia MJ
The policy and practice legacy of the New Jersey Medicaid ACO Demonstration Project.
This paper examined the New Jersey Medicaid Accountable Care Organization (ACO) Demonstration and what was learned from the Demonstration. The Demonstration did not lead to a sustainable accountable care financing model as hoped for. Instead, the ACOs evolved into community health coalitions focused on a wide range of activities in partnership with state government, private health systems, community leaders, and MCOs. Policy parameters are currently being developed by the state to reposition the ACOs as regional partners to implement state-directed population health initiatives.
AHRQ-funded; HS023493.
Citation: DeLia D, Yedidia MJ .
The policy and practice legacy of the New Jersey Medicaid ACO Demonstration Project.
J Ambul Care Manage 2020 Jan/Mar;43(1):2-10. doi: 10.1097/jac.0000000000000308..
Keywords: Medicaid, Policy, Health Insurance, Uninsured
Selden TM, Lipton BJ, Decker SL
AHRQ Author: Selden TM, Lipton BJ, Decker SL
Medicaid expansion and marketplace eligibility both increased coverage, with trade-offs in access, affordability.
The researchers found that as of 2015, adults with incomes of 100-138 percent of the federal poverty level had experienced large declines in uninsurance rates in both expansion and nonexpansion states. Adults in expansion and nonexpansion states also experienced similar increases in having a usual source of care and primary care visits, and similar reductions in delayed receipt of medical care due to cost.
AHRQ-authored.
Citation: Selden TM, Lipton BJ, Decker SL .
Medicaid expansion and marketplace eligibility both increased coverage, with trade-offs in access, affordability.
Health Aff 2017 Dec;36(12):2069-77. doi: 10.1377/hlthaff.2017.0830.
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Keywords: Access to Care, Health Insurance, Policy, Low-Income, Medicaid, Uninsured
Charles EJ, Johnston LE, Herbert MA
Impact of Medicaid expansion on cardiac surgery volume and outcomes.
The objective of this study was to evaluate the effect of Medicaid expansion on cardiac surgery volume and outcomes comparing one state that expanded to one that did not. It concluded that Medicaid expansion was associated with fewer uninsured cardiac surgery patients and improved predicted risk scores and morbidity rates. In addition to improving health care financing, Medicaid expansion may positively affect patient care and outcomes.
AHRQ-funded; HS022535.
Citation: Charles EJ, Johnston LE, Herbert MA .
Impact of Medicaid expansion on cardiac surgery volume and outcomes.
Ann Thorac Surg 2017 Oct;104(4):1251-58. doi: 10.1016/j.athoracsur.2017.03.079.
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Keywords: Patient-Centered Outcomes Research, Medicaid, Surgery, Cardiovascular Conditions, Policy
Huguet N, Hoopes MJ, Angier H
Medicaid expansion produces long-term impact on insurance coverage rates in community health centers.
This study assesses changes in insurance status of patients visiting community health centers (CHCs) comparing states that expanded Medicaid to those that did not. Rates of uninsured visits decreased pre- to post- Affordable Care Act with greater drops in expansion (-57 percent) versus nonexpansion (-20 percent) states. Medicaid-insured visits increased 60 percent in expansion states while remaining unchanged in nonexpansion states.
AHRQ-funded; HS024270.
Citation: Huguet N, Hoopes MJ, Angier H .
Medicaid expansion produces long-term impact on insurance coverage rates in community health centers.
J Prim Care Community Health 2017 Oct;8(4):206-12. doi: 10.1177/2150131917709403.
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Keywords: Community Partnerships, Health Insurance, Policy, Medicaid, Uninsured
Gonzales G, Golberstein E, Hill SC
AHRQ Author: Hill, SC; Zuvekas, SH
Psychological distress and enrollment in Medicaid.
Adults with poor mental health may want and need insurance to obtain care, but symptoms may impede enrollment into public health insurance. The enrollment response to Medicaid expansions prior to the Affordable Care Act was stronger for adults symptomatic of psychological distress compared with adults without distress and compared to adults with chronic physical health problems.
AHRQ-authored.
Citation: Gonzales G, Golberstein E, Hill SC .
Psychological distress and enrollment in Medicaid.
J Behav Health Serv Res 2017 Oct;44(4):523-35. doi: 10.1007/s11414-016-9532-9.
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Keywords: Access to Care, Policy, Medicaid, Medical Expenditure Panel Survey (MEPS), Behavioral Health
Hatch B, Marino M, Killerby M
Medicaid's impact on chronic disease biomarkers: a cohort study of community health center patients.
This study assessed changes in biomarkers of chronic disease among community health center (CHC) patients who gained Medicaid coverage with the Oregon Medicaid expansion (2008-2011). It found that patients with uncontrolled chronic conditions experienced objective health improvements over time. In two of three chronic disease cohorts, those who gained Medicaid coverage were more likely to achieve a controlled measurement than those who remained uninsured.
AHRQ-funded; HS024270.
Citation: Hatch B, Marino M, Killerby M .
Medicaid's impact on chronic disease biomarkers: a cohort study of community health center patients.
J Gen Intern Med 2017 Aug;32(8):940-47. doi: 10.1007/s11606-017-4051-9.
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Keywords: Medicaid, Chronic Conditions, Access to Care, Policy
Decker SL, Lipton BJ, Sommers BD
AHRQ Author: Decker SL, Lipton BJ
Medicaid expansion coverage effects grew in 2015 with continued improvements in coverage quality.
The researchers used detailed federal survey data through 2015 to analyze recent changes in coverage for low-income adults after the expansion associated with the Affordable Care Act's (ACA's) Medicaid expansion in 2014. They found that the uninsurance rate fell in both expansion and nonexpansion states but that it fell significantly more in expansion states.
AHRQ-authored; AHRQ-funded; HS021291.
Citation: Decker SL, Lipton BJ, Sommers BD .
Medicaid expansion coverage effects grew in 2015 with continued improvements in coverage quality.
Health Aff 2017 May;36(5):819-25. doi: 10.1377/hlthaff.2016.1462.
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Keywords: Medicaid, Low-Income, Health Insurance, Uninsured, Policy
Frean M, Gruber J, Sommers BD
Premium subsidies, the mandate, and Medicaid expansion: coverage effects of the Affordable Care Act.
Using premium subsidies for private coverage, an individual mandate, and Medicaid expansion, the Affordable Care Act (ACA) has increased insurance coverage. Win this study, the investigators provide the first comprehensive assessment of these provisions' effects, using the 2012-2015 American Community Survey and a triple-difference estimation strategy that exploits variation by income, geography, and time.
AHRQ-funded; HS021291.
Citation: Frean M, Gruber J, Sommers BD .
Premium subsidies, the mandate, and Medicaid expansion: coverage effects of the Affordable Care Act.
J Health Econ 2017 May;53:72-86. doi: 10.1016/j.jhealeco.2017.02.004..
Keywords: Healthcare Costs, Health Insurance, Policy, Medicaid
Jacobs PD, Hill SC, Abdus S
AHRQ Author: Jacobs PD, Hill SC, Abdus S
Adults are more likely to become eligible for Medicaid during future recessions if their state expanded Medicaid.
The researchers simulated eligibility for Medicaid for the period 2005-14 in two scenarios: assuming that each state's eligibility rules in 2009, the year before passage of the Affordable Care Act (ACA), were in place during the entire study period; and assuming that the ACA's expanded eligibility rules were in place during the entire period for all states. Their simulations showed that the ACA expansion increased Medicaid's responsiveness to changes in unemployment.
AHRQ-authored.
Citation: Jacobs PD, Hill SC, Abdus S .
Adults are more likely to become eligible for Medicaid during future recessions if their state expanded Medicaid.
Health Aff 2017 Jan;36(1):32-39. doi: 10.1377/hlthaff.2016.1076.
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Keywords: Medicaid, Health Insurance, Policy, Healthcare Costs
Decker SL, Lipton BJ
AHRQ Author: Decker SL, Lipton BJ
Most newly insured people in 2014 were long-term uninsured.
This study found that in 2014-after the implementation of most of the Affordable Care Act provisions, including Medicaid expansions in some states and subsidies to purchase Marketplace coverage in all states-adults who had been uninsured for more than three years represented a larger share of the newly insured, compared to adults who had been insured for shorter periods of time.
AHRQ-authored.
Citation: Decker SL, Lipton BJ .
Most newly insured people in 2014 were long-term uninsured.
Health Aff 2017 Jan;36(1):16-20. doi: 10.1377/hlthaff.2016.0984.
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Keywords: Health Insurance, Uninsured, Medicaid, Policy
Sohn H, Timmermans S
Social effects of health care reform: Medicaid expansion under the Affordable Care Act and changes in volunteering.
This article examined whether public health policy interventions result in pro-social behaviors. Specifically, it examined the association between Medicaid and volunteer work. Volunteerism is implicated in individuals' health and well-being yet it is highly correlated with a person's existing socioeconomic resources. The investigators found that increased volunteer work associated with Medicaid was greater among minority groups and narrowed existing ethnic differences in volunteerism in states that expanded Medicaid eligibility.
AHRQ-funded; HS000046.
Citation: Sohn H, Timmermans S .
Social effects of health care reform: Medicaid expansion under the Affordable Care Act and changes in volunteering.
Socius 2017 Jan-Dec;3. doi: 10.1177/2378023117700903..
Keywords: Medicaid, Policy, Racial and Ethnic Minorities