Accepted for Publication: August 29, 2011.
Published Online: November 28, 2011. doi:10.1001/archinternmed.2011.569
Author Contributions: Drs Khawaja and Ting and Mssrs Lennon and Slusser had full access to all 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: Khawaja, Shah, Alkatib, Holmes, Bell, and Ting. Acquisition of data: Alkatib, Holmes, and Ting. Analysis and interpretation of data: Khawaja, Shah, Lennon, Slusser, Alkatib, Rihal, Gersh, Montori, Bell, Curtis, Krumholz, and Ting. Drafting of the manuscript: Khawaja, Alkatib, Rihal, Montori, Holmes, and Ting. Critical revision of the manuscript for important intellectual content: Khawaja, Shah, Lennon, Slusser, Alkatib, Rihal, Gersh, Montori, Bell, Curtis, Krumholz, and Ting. Statistical analysis: Khawaja, Lennon, and Slusser. Obtained funding: Ting. Administrative, technical, and material support: Khawaja, Alkatib, Rihal, and Ting. Study supervision: Holmes, Bell, and Ting.
Financial Disclosure: Dr Krumholz chairs a cardiac scientific advisory board for United Healthcare and is the recipient of a research grant from Medtronic Inc through Yale University.
Funding/Support: This study was funded by the Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota. Dr Krumholz is supported by grant U01-HL105270-02 (Center for Cardiovascular Outcomes Research at Yale University) from the National Heart, Lung, and Blood Institute.