Author Contributions: Drs Ho and Rumsfeld 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: Ho, Peterson,
Wang, Fihn, Larsen, Jesse, Rumsfeld.
Acquisition of data: Wang, Fihn.
Analysis and interpretation of data: Ho, Peterson, Wang, Magid, Rumsfeld.
Drafting of the manuscript: Ho, Rumsfeld.
Critical revision of the manuscript for important intellectual content: Ho, Peterson, Wang, Magid, Fihn, Larsen,
Statistical analysis: Wang.
Obtained funding: Fihn.
Administrative, technical, or material support: Fihn, Jesse.
Study supervision: Fihn, Larsen, Jesse,
Financial Disclosures: Dr Peterson reported receiving honoraria and research support from the partnership between Bristol-Myers Squibb and Sanofi. No other authors reported financial disclosures.
Funding/Support: This study was supported by the Quality Enhancement Research Initiative (Cardiac Care Follow-up Clinical Study, MRC 03-334) of the US Department of Veterans Affairs.
Dr Ho is supported by VA Health Services Research and Development Career Development Award. Dr Peterson is supported by an RO1 grant from the National Institute on Aging.
Role of the Sponsor: The US Department of Veterans Affairs was not involved in the design and conduct of the study, collection, management, analysis, and interpretation of the data; or in the preparation, review, or approval of the manuscript.
Disclaimer: The views expressed in this article are those of the authors and do not necessarily represent the views of the US Department of Veterans Affairs. Dr Peterson, a JAMA contributing editor, was not involved in the editorial review or decision to publish this article.
Additional Contributions: We acknowledge the contribution of Jack Haeflich, whose keen observations on antiplatelet therapy were the stimulus for this study. He was not compensated for his contribution.