Author Contributions: Dr Borden had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Borden, Redberg, Spertus.
Acquisition of data: Borden, Redberg, Dai, Kaltenbach, Spertus.
Analysis and interpretation of data: Borden, Redberg, Mushlin, Spertus.
Drafting of the manuscript: Borden, Spertus.
Critical revision of the manuscript for important intellectual content: Borden, Redberg, Mushlin, Dai, Kaltenbach, Spertus.
Statistical analysis: Dai, Kaltenbach.
Obtained funding: Borden, Spertus.
Administrative, technical, or material support: Borden.
Study supervision: Redberg, Mushlin, Spertus.
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Dr Borden reported participating in a one-time advisory board meeting for Kowa Company Ltd. Dr Redberg reported being a member of the FDA Circulatory System Devices Panel and a member of the California Technology Assessment Forum. Dr Spertus reported being the principal investigator of a contract from the American College of Cardiology to analyze its National Cardiovascular Data Registry (NCDR) and having a contract from the American College of Cardiology Foundation to analyze the NCDR registry, although his team did not perform the analyses for this study. No other authors reported financial disclosures.
Funding/Support: This work was supported by the NCDR, an initiative of the American College of Cardiology Foundation. Dr Borden is funded through a Nanette Laitman Clinical Scholar in Public Health award at the Weill Cornell Medical College. Dr Mushlin is funded in part by cooperative agreement U18 HS016075 from the Agency for Healthcare Research and Quality.
Role of the Sponsor: The NCDR had no role in the design and conduct of the study, in the analysis or interpretation of the data, or in the preparation of the manuscript; however, NCDR participated in the collection and management of the data, as well as in the review and approval of the manuscript.
Disclaimer: The views expressed in this article are solely the responsibility of the authors and do not necessarily represent the official views of the Agency for Healthcare Research and Quality or the NCDR (or its associated professional societies identified at http://www.ncdr.com). Dr Redberg, editor of the Archives of Internal Medicine, had no role in the evaluation of or decision to publish this article.
Additional Contributions: Tracy Y. Wang, MD, MHS (Duke Clinical Research Institute, Duke University, Durham, North Carolina), provided data support and advice. Dr Wang receives research grant support from the American College of Cardiology National Cardiovascular Data Registry.
This article was corrected for errors on May 17, 2011.