Accepted for Publication: August 17, 2013.
Published Online: December 2, 2013. doi:10.1001/jamainternmed.2013.11944.
Study concept and design: Barreto-Filho, Krumholz.
Acquisition of data: Krumholz.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: Barreto-Filho, Krumholz.
Critical revision of the manuscript for important intellectual content: Wang, Rathore, Spatz, Ross, Curtis, Nallamothu, Normand, Krumholz.
Statistical analysis: Wang, Spatz, Normand.
Obtained funding: Krumholz.
Administrative, technical, and material support: Krumholz.
Study supervision: Krumholz.
Conflict of Interest Disclosures: Drs Ross and Krumholz work under contract with the Centers for Medicare & Medicaid Services to develop and maintain performance measures. Dr Ross is a member of a scientific advisory board for FAIR Health, and Dr Krumholz is chair of a cardiac scientific advisory board for UnitedHealth. Drs Ross and Krumholz are the recipients of a research grant from Medtronic, through Yale University, to develop methods of clinical trial data sharing. No other disclosures were reported.
Funding/Support: This study was funded by grant 1U01HL105270-04 (Center for Cardiovascular Outcomes Research at Yale University) from the National Heart, Lung, and Blood Institute. Dr Barreto-Filho is supported by grant 3436-10-1 from the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Ministry of Education, Brazil, and the Federal University of Sergipe, Sergipe, Brazil. Dr Ross is supported by grants K08 AG032886 and K08 AG038336 from the National Institute on Aging and by the American Federation for Aging Research through the Paul B. Beeson Career Development Award Program, respectively.
Role of the Sponsors: The sponsors had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.