Author Contributions: Drs Ross and Krumholz had full access to all of the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Ross, Gross, Grant, Daniels, Krumholz.
Acquisition of data: Ross, Hong, Gibbons, Krumholz.
Analysis and interpretation of data: Ross, Gross, Desai, Daniels, Hachinski, Gibbons, Gardner, Krumholz.
Drafting of the manuscript: Ross, Krumholz.
Critical revision of the manuscript for important intellectual content: Ross, Gross, Desai, Hong, Grant, Daniels, Hachinski, Gibbons, Gardner, Krumholz.
Statistical analysis: Ross, Gross, Desai, Krumholz.
Administrative, technical, or material support: Ross, Hong, Krumholz.
Study supervision: Krumholz.
Financial Disclosures: None reported.
Funding/Support: The American Heart Association was involved in the collection of the data and approved the manuscript but provided no financial or material support for the work. This project was not directly supported by any external grants or funds. Dr Ross is a scholar in the Robert Wood Johnson Clinical Scholars Program at Yale University sponsored by the Robert Wood Johnson Foundation.
Role of the Sponsor: Neither the American Heart Association nor the Robert Wood Johnson Foundation had any role in the design and conduct of the study; management, analysis, or interpretation of the data; or preparation or review of the manuscript.
Previous Presentation: Presented at the International Congress on Peer Review and Biomedical Publication; September 16, 2005; Chicago, Ill.