Author Contributions: Dr Chan 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: Chan, Spertus.
Acquisition of Data: Spertus.
Statistical Analysis: Kennedy.
Analysis and interpretation of data: Chan, Patel, Klein, Krone, Dehmer, Kennedy, Nallamothu, Weaver, Masoudi, Rumsfeld, Brindis, Spertus.
Drafting of the manuscript: Chan, Spertus.
Critical revision of the manuscript for important intellectual content: Chan, Patel, Klein, Krone, Dehmer, Kennedy, Nallamothu, Weaver, Masoudi, Rumsfeld, Brindis, Spertus.
Study Supervision: Chan, Spertus.
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Dr Chan reported receiving support from a Career Development Grant Award (K23HL102224) from the National Heart, Lung, and Blood Institute (NHLBI) to examine the appropriateness of percutaneous coronary intervention in the United States. Dr Spertus reported having a contract from the American College of Cardiology (ACC) to analyze National Cardiovascular Data Registry (NCDR) data. Drs Brindis, Masoudi, and Rumsfeld reported receiving salary support from the ACC. No other authors reported disclosures.
Funding/Support: The NCDR CathPCI Registry is an initiative of the ACC Foundation and the Society for Cardiovascular Angiography and Interventions. This study was supported by the NCDR.
Role of the Sponsors: Neither the NHLBI nor the ACC were involved in the design and conduct of the study; the analysis and interpretation of the data; or the preparation and review of the manuscript. Because the ACC oversees the NCDR, it funded the collection of data in the CathPCI Registry, and the final manuscript was approved by the NCDR.
Disclaimer: The manuscript was reviewed for content by an NCDR Research and Publications committee prior to journal submission. However, the views expressed in this article represent those of the author(s) and do not necessarily represent the official views of the NCDR or its associated professional societies, identified at http://www.ncdr.com/webncdr/common/.