Historical Research

Background

Obamacare (the Affordable Care Act) was signed into law in March 2010. Research articles published prior to January 20, 2017, are archived on this page for historical interest only. Their conclusions and recommendations may not reflect the official position of the U.S. Department of Health & Human Services today, especially with respect to the consequences of Obamacare.

Publications

2017

• Did Consumers Respond to Changes in Gross Premiums or to Changes in Premiums Net of Tax Credits When Making Health Plan Choices in the 2016 ACA Marketplaces

• Medicaid Expansion Impacts on Insurance Coverage and Access to Care

• Effects of the Affordable Care Act on Safety Net Hospitals

• National Health Service Corps: An Extended Analysis

• Evidence Indicates a Range of Challenges for Puerto Rico  Health Care System

• Nearly 900,000 Puerto Ricans May Lose Health Coverage When Medicaid Funds Run Out

• Continuing Progress on the Opioid Epidemic: The Role of the Affordable Care Act 

• Health Insurance Coverage for Americans with Pre Existing Conditions The Impact of the Affordable Care Act
   

2016

• Health Insurance Marketplace Cost Sharing Reduction Subsidies by Zip Code and County 2016

• Compilation of State Data on the Affordable Care Act

• Health Plan Choice and Premiums in the 2017 Health Insurance Marketplace

• Health Insurance Marketplace Enrollment Projections for 2017

• Rural Hospital Participation and Performance in Value-Based Purchasing and Other Delivery System Reform Initiatives

• People Who Currently Buy Individual Market Coverage Could Be Eligible for ACA Subsidies

• Affordable Care Act Has Led to Historic, Widespread Increase in Health Insurance Coverage

• The Effect of Medicaid Expansion on Marketplace Premiums

• The Effect of Shopping and Premium Tax Credits on the Affordability of Marketplace Coverage

• Impacts Of The Affordable Care Act's Medicaid Expansion On Insurance Coverage And Access To Care

• The Affordable Care Act: Promoting Better Health for Women​

• Impact of the Affordable Care Act Coverage Expansion on Rural and Urban Populations.

• Impact of the ACA on Small Businesses - Testimony before the US Senate Committee on Small Business and Entrepreneurship

• Marketplace Premiums after Shopping, Switching, and Premium Tax Credits, 2015-2016

• Health Insurance Marketplaces 2016 Open Enrollment Period: Final Enrollment Report, ASPE Issue Brief, March 2016

• Plan Selections by ZIP Code and County in the Health Insurance Marketplace: March 2016

• Health Insurance Coverage and the Affordable Care Act, 2010-2016

• Health Insurance Marketplace 2016: Average Premium After Advance Premium Tax Credits In The 38 States Using The Healthcare.Gov Eligibility And Enrollment Platform

• Health Insurance Marketplaces 2016 Open Enrollment Period: January Enrollment Report, ASPE Issue Brief, January 2016

• Plan Selections by ZIP Code in the Health Insurance Marketplace January 2016
   

2015

• Community Action Agency Activities in Affordable Care Act Outreach and Enrollment: Insights from Case Studies

• Estimates of the QHP Eligible Uninsured by Designated Market Area for the Third Open Enrollment Period

• Health Plan Choice and Premiums in the 2016 Health Insurance Marketplace

• Consumer Decisions Regarding Health Plan Choices, in the 2014 and 2015 Marketplaces

• How Many Individuals Might Have Marketplace Coverage at the End of 2016?

• Health Insurance Marketplace: Uninsured Populations Eligible to Enroll for 2016

• Health Insurance Coverage and the Affordable Care Act

• Competition and Choice in the Health Insurance Marketplaces, 2014-2015: Impact on Premiums (PDF-11 Pages)

• Plan Selections by County in the Health Insurance Marketplace (UPDATED)

• Building the Nation's Health Care Workforce (PDF-9 Pages)

• Outreach and Enrollment for LGBT Individuals: Promising Practices from the Field

• The Affordable Care Act is Improving Access to Preventive Services for Millions of Americans (PDF-3 Pages)

• Medicare Spending Growth Since 2009 (PDF-2 Pages)

• Plan Selections by ZIP Code in the Health Insurance Marketplace

• The Economic Impacts of Medicaid Expansion, Uncompensated Care Costs and the Affordable Care Act

• Medicaid Enrollment and the Affordable Care Act (PDF-1 Page)

• Health Insurance Coverage and the Affordable Care Act

• Health Insurance Marketplace 2015 Open Enrollment Period: March Enrollment Report (PDF-73 pages)

• Integrating Health and Human Services Programs and Reaching Eligible Individuals under the Affordable Care Act: Final Report (PDF-37 Pages)

• Health Insurance Marketplace 2015: Average Premiums After Advance Premium Tax Credits Through January 30 in 37 States Using the Healthcare.Gov Platform (PDF-7 Pages)

• Health Insurance Marketplace 2015 Open Enrollment Period: January Enrollment Report (PDF-44 Pages)

• 2015 Plan Selections by ZIP Code in the Health Insurance Marketplace

• The Affordable Care Act: Advancing the Health of Women and Children (PDF-7 Pages) 
   

2014

• Health Insurance Marketplace 2015 Open Enrollment Period: December Enrollment Report (PDF-33 Pages)

• Health Plan Choice and Premiums in the 2015 Health Insurance Marketplace (PDF-24 Pages)

• How Many Individuals Might Have Marketplace Coverage After the 2015 Open Enrollment Period? (PDF 5 Pages)

• Survey Data on Health Insurance Coverage for 2013 and 2014 (PDF-15 Pages)

• Impact of Insurance Expansion on Hospital Uncompensated Care Costs (PDF-26 Pages)

• Health Insurance Issuer Participation and New Entrants in the Health Insurance Marketplace in 2015 (PDF-8 Pages)

• Rate Review Annual Report for Calendar Year 2013 (PDF-9 Pages)

• Plan Selections by ZIP Code in the Health Insurance Marketplace

• Increased Coverage of Preventive Services with Zero Cost Sharing under the Affordable Care Act (PDF-8 Pages)

• Premium Affordability, Competition, and Choice in the Health Insurance Marketplace, 2014 (PDF-26 Pages)

• Effects of Implementing State Insurance Market Reform, 2011-2012 (PDF-71 Pages)

• Trends in Premiums in the Small Group and Individual Insurance Markets, 2008-2011 (PDF-84 Pages)

• Health Insurance Marketplace: Summary Enrollment Report (PDF-45 Pages)

• Addendum to the Health Insurance Marketplace: March Enrollment Report

• Second Addendum to the Health Insurance Marketplace Summary Enrollment Report

• Health Insurance Marketplace: Summary Enrollment Report Infographic

• Health Insurance Marketplace: Summary Enrollment Report: State Profile

• The Medicare Advantage Program in 2014 (PDF-15 Pages)

• The Eligible Uninsured in Texas: 6 in 10 Could Receive Health Insurance Marketplace Tax Credits, Medicaid or CHIP (PDF Version, 6 pages)

• ASPE/OMH Research Brief - Eligible Uninsured Asian Americans, Native Hawaiians, and Pacific Islanders: 8 in 10 Could Receive Health Insurance Marketplace Tax Credits,Medicaid or CHIP (PDF Version, 12 pages)

• Common Sports Injuries: Incidence and Average Charges, (PDF Version, 5 pages)

• Health Insurance Marketplace: March Enrollment Report; For the period: October 1, 2013 - March 1, 2014 (PDF-26 Pages) 

• Addendum to the Health Insurance Marketplace: March Enrollment Report (PDF-28 Pages) 

• Marketplace Open Enrollment Process by the Numbers Fifth Reporting Period: October 1, 2013 through March 1, 2014 

• Health Insurance Marketplace: February 2014 Enrollment Report (PDF-53 Pages) 

• Marketplace Open Enrollment Process by the Numbers Fourth Reporting Period: October 1, 2013 through February 1, 2014 

• Eligible Uninsured Latinos: 8 in 10 Could Receive Health Insurance Marketplace Tax Credits, Medicaid or CHIP (PDF-11 Pages)

• Children’s Health Coverage on the 5th Anniversary of CHIPRA (PDF-5 Pages) 

• Health Insurance Marketplace: January 2014 Enrollment Report (PDF-29 Pages)

• Marketplace Open Enrollment Process by the Numbers Third Reporting Period: October 1st through December 28th

2013

• Environmental Scan to Identify the Major Research Questions and Metrics for Monitoring the Effects of the Affordable Care Act on Safety Net Hospitals (PDF-34 Pages)

• Health Insurance Marketplace: December Enrollment Report (PDF-15 Pages)

• Marketplace Open Enrollment Process by the Numbers Second Reporting Period: October 1st through November 30th

• Eligible Uninsured African Americans: 6 in 10 Could Receive Health Insurance Marketplace Tax Credits, Medicaid or CHIP (PDF-11 Pages)

• Health Insurance Marketplace: November Enrollment Report (PDF-28 Pages)

• Marketplace Open Enrollment Process by the Numbers First Reporting Period: October 1st through November 2nd

• Nearly 5 in 10 Uninsured Single Young Adults Eligible for the Health Insurance Marketplace Could Pay $50 or Less Per month for Coverage in 2014 (PDF-8 Pages)

• Health Insurance Marketplace Premiums for 2014 (PDF-15 Pages)

• New Census Estimates Show 3 Million more Americans had Health Insurance Coverage in 2012 (PDF-7 Pages)

• Fifty-Six Percent of The Uninsured Could Pay $100 or Less per Month for Coverage in 2014 (PDF-6 Pages)

• U.S. Department of Health and Human Services: Rate Review Annual Report September 2013 (PDF-16 Pages)

• The Affordable Care Act and Adolescents (PDF-8 Pages)

• Market Competition Works: Proposed Silver Premiums in the 2014 Individual Market Are Substantially Lower than Expected (PDF Version, 6 pages)  

• Market Competition Works: Proposed Silver Premiums in the 2014 Individual and Small Group Markets Are Nearly 20% Lower than Expected, (PDF Version, 12 pages)  

• Seventy-one million additional Americans are receiving preventive services coverage without cost-sharing under the Affordable Care Act, (PDF Version, 4 pages) 

• Modified Adjusted Gross Income (MAGI) Income Conversion Methodologies (PDF-49 Pages)

• Health Insurance Premium Increases in the Individual Market Since the Passage of the Affordable Care Act (PDF Version, 8 pages) 

• Affordable Care Act Expands Mental Health and Substance Use Disorder Benefits and Federal Parity Protections for 62 Million Americans,  (PDF Version, 4 pages)  

• Growth in Medicare Spending per Beneficiary Continues to Hit Historic Lows (PDF Version, 6 pages)

2012

• Estimated Savings of $5,000 to Each Medicare Beneficiary from Enactment Through 2022 Under the Affordable Care Act  (PDF Version, 5 pages)

• Overview of the Uninsured in the United States: A Summary of the 2012 Current Population Survey Report (PDF-6 Pages) 

• 47 Million Women Will Have Guaranteed Access To Women's Preventive Services With Zero Cost-Sharing Under The Affordable Care Act (PDF-5 Pages)

• Number of Young Adults Gaining Insurance Due to the Affordable Care Act Now Tops 3 Million (PDF version, 2 pages)

• The Affordable Care Act and Asian Americans and Pacific Islanders (PDF version, 8 pages)

• The Affordable Care Act and African Americans (PDF version, 6 pages)  

• The Affordable Care Act and Latinos (PDF version, 7 pages).
  En español (PDF-7 Páginas)

• Uninsured Young Adults and the Affordable Care Act (PDF-2 Pages)

• The Affordable Care Act and Women (PDF version, 2 pages)  

• The Affordable Care Act and Participation Rates in Medicaid (PDF-7 Pages)

• Expanded Insurance Coverage For Young Adults of All Races and Ethnicities (PDF-2 Pages)

• 105 Million Americans No Longer Face Lifetime Limits on Health Benefits   (PDF version, 6 pages)

• ACA and Preventive Services Coverage Without Cost-Sharing (PDF-4 Pages)

• The Cost of Covering Contraceptives through Health Insurance 

• Medicare Beneficiary Savings and the Affordable Care Act  (PDF Version, 4 pages)  

2011

• At Risk:  Pre-Existing Conditions Could Affect 1 in 2 Americans (PDF version, 10 pages)

• The Affordable Care Act and Children (PDF-7 Pages)

• Comparing Health Benefits Across Markets (PDF-7 Pages)

• Essential Health Benefits:  Individual Market Coverage (PDF version, 2 pages)

• Variation and Trends in Medigap Premiums  (PDF version, 38 pages)  

• 2.5 Million Young Adults Gain Health Insurance Due to the Affordable Care Act  (PDF version, 2 pages)

• Actuarial Value and Employer-Sponsored Insurance (PDF version, 12 pages)

• One Million Young Adults Gain Health Insurance in 2011 Because of the Affordable Care Act (PDF version, 3 pages)

• Overview of the Uninsured in the United States (PDF version, 5 pages) 

• The Value of Health Insurance:  Few of the Uninsured Have Adequate Resources to Pay Potential Hospital Bills (PDF-10 Pages)