Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleWhy higher copayments for opioids did not reduce use among Medicare beneficiaries.AuthorsJoyce, Geoffrey; Zhou, Bo; Kaestner, RobertPublicationHealth Economics, 2024, Vol 33, Issue 3, p466ISSN1057-9230Publication typeArticleDOI10.1002/hec.4779