Accepted for Publication: August 25, 2015.
Published Online: March 25, 2015. doi:10.1001/jamasurg.2014.3171.
Study concept and design: Crawshaw, Chien, Delaney.
Acquisition, analysis, or interpretation of data: Crawshaw, Chien, Augestad.
Drafting of the manuscript: All authors.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Chien.
Obtaining funding: Delaney.
Administrative, technical, or material support: Chien, Delaney.
Study supervision: Augestad, Delaney.
Conflict of Interest Disclosures: Mr Chien reports being an employee of Covidien. No other disclosures were reported.
Funding/Support:Covidien provided funding for data downloaded for this study as well as unrestricted statistical support. Funding for the collection, management, analysis, and interpretation of the data for this study was provided by Covidien.
Role of the Funder/Sponsor: Covidien had no role in the preparation, review, or approval of the manuscript and in the decision to submit the manuscript for publication.
Additional Contributions: Lobat Hashemi, MS, Michael Morseon, MBA, and Santosh Agarwal, BPharm, MS, Covidien, provided support in data collection and analysis.