Comparison of prior authorization across insurers: cross sectional evidence from Medicare Advantage.

"data availability statement additional data are available at https://github com/ravigupta-github ."

"data availability statement additional data are available at https://github com/ravigupta-github ."

"Competing interests: All authors have completed the ICMJE uniform disclosure form at www.icmje.org/coi_disclosure.pdf and declare: support from the US Department of Veterans Affairs for the submitted work; RG reports receiving consulting fees from Alosa Health and Sunday Health for unrelated work; JF is employed by Medidata Solutions, which played no role in the development or publication of this paper; ALS reports receiving speaking fees from VBID Health and is an employee of the Veterans Health Administration; no other financial relationships with any organizations that might have an interest in the submitted work in the previous three years. The statements, findings, conclusions, and views expressed in this article are those of the authors and do not necessarily reflect those of the US Department of Veteran Affairs or the US government."

"Contributors: RG and AS contributed to the design of the study. RG, JF, and AS directed the analyses, which were conducted by RG and JF. All authors contributed to interpreting the results. RG and AS drafted the manuscript. All authors critically revised the manuscript for important intellectual content. RG is the guarantor. The corresponding author attests that all listed authors meet authorship criteria and that no others meeting the criteria have been omitted.Funding: This work was supported by grant IK2HX003634 from the US Department of Veterans Affairs (Office of Research and Development Career Development Award). The funders had no role in considering the study design or in the collection, analysis, interpretation of data, writing of the report, or decision to submit the article for publication.Competing interests: All authors have completed the ICMJE uniform disclosure form at www.icmje.org/coi_disclosure.pdf and declare: support from the US Department of Veterans Affairs for the submitted work; RG reports receiving consulting fees from Alosa Health and Sunday Health for unrelated work; JF is employed by Medidata Solutions, which played no role in the development or publication of this paper; ALS reports receiving speaking fees from VBID Health and is an employee of the Veterans Health Administration; no other financial relationships with any organizations that might have an interest in the submitted work in the previous three years. The statements, findings, conclusions, and views expressed in this article are those of the authors and do not necessarily reflect those of the US Department of Veteran Affairs or the US government.The lead author affirms that this manuscript is an honest, accurate, and transparent account of the study being reported; that no important aspects of the study have been omitted; and that any discrepancies from the study as planned have been explained.Dissemination to participants and related patient communities: We plan to disseminate our work publicly through a variety of venues, including lay press coverage, social media, press releases and blog posts by the authors’ affiliated organizations, and presentations at virtual and in-person conferences.Provenance and peer review: Not commissioned; externally peer reviewed. Funding: This work was supported by grant IK2HX003634 from the US Department of Veterans Affairs (Office of Research and Development Career Development Award). The funders had no role in considering the study design or in the collection, analysis, interpretation of data, writing of the report, or decision to submit the article for publication."