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dc.contributor.authorDafny, Leemore Sharon
dc.contributor.authorGruber, Jonathan
dc.date.accessioned2017-06-26T17:26:52Z
dc.date.available2017-06-26T17:26:52Z
dc.date.issued2015-02
dc.identifier.issn2332-3493
dc.identifier.issn2332-3507
dc.identifier.urihttp://hdl.handle.net/1721.1/110260
dc.description.abstractFirst-year insurer participation in the Health Insurance Marketplaces (HIMs) established by the Affordable Care Act is limited in many areas of the country. There are 3.9 participants, on (population-weighted) average, in the 395 ratings areas spanning the 34 states with federally facilitated marketplaces (FFMs). Using data on the plans offered in the FFMs, together with predicted market shares for HIM participants (estimated using 2011 insurer-state market shares in the individual insurance market), we study the impact of competition on premiums. We exploit variation in ratings-area-level competition induced by UnitedHealthcare's decision not to participate in any of the FFMs. We estimate that the second-lowest-price silver premium (which is directly linked to federal subsidies) would have decreased by 5.4 percent, on average, had UnitedHealthcare participated. If all insurers active in each state's individual insurance market in 2011 had participated in all ratings areas in that state's HIM, we estimate this key premium would be 11.1% lower and 2014 federal subsidies would be reduced by $1.7 billion.en_US
dc.language.isoen_US
dc.publisherMIT Pressen_US
dc.relation.isversionofhttp://dx.doi.org/10.1162/ajhe_a_00003en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceMIT Pressen_US
dc.titleMore Insurers Lower Premiumsen_US
dc.typeArticleen_US
dc.identifier.citationDafny, Leemore, Jonathan Gruber, and Christopher Ody. “More Insurers Lower Premiums.” American Journal of Health Economics 1, no. 1 (January 2015): 53–81. © 2015 American Society of Health Economists and Massachusetts Institute of Technologyen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Economicsen_US
dc.contributor.mitauthorDafny, Leemore Sharon
dc.contributor.mitauthorGruber, Jonathan
dc.relation.journalAmerican Journal of Health Economicsen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsDafny, Leemore; Gruber, Jonathan; Ody, Christopheren_US
dspace.embargo.termsNen_US
dc.identifier.orcidhttps://orcid.org/0000-0002-9877-3065
mit.licensePUBLISHER_POLICYen_US
mit.metadata.statusComplete


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