Accepted for Publication: June 18, 2012.
Published Online: September 17, 2012. doi:10.1001/archinternmed.2012.4268
Author Contributions: Drs Shreibati and Baker 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: Shreibati and Mell. Acquisition of data: Baker. Analysis and interpretation of data: Shreibati, Hlatky, and Mell. Drafting of the manuscript: Shreibati. Critical revision of the manuscript for important intellectual content: Shreibati, Baker, Hlatky, and Mell. Statistical analysis: Shreibati. Obtained funding: Hlatky. Administrative, technical, and material support: Baker. Study supervision: Hlatky and Mell.
Financial Disclosure: None reported.
Funding/Support: This study was funded by the Stanford Cardiovascular Institute, Stanford, California, and the American Heart Association, Dallas, Texas.
Role of the Sponsors: The Stanford Cardiovascular Institute and the American Heart Association had no role in the design and conduct of the study; the collection, management, analysis, and interpretation of the data; or the preparation, review, or approval of the manuscript.
Previous Presentation: Research for this article was presented as a poster at the American Heart Association Quality of Care and Outcomes Research 2012 Scientific Sessions; May 11, 2012; Atlanta, Georgia.