Accepted for Publication: April 19, 2013.
Published Online: December 11, 2013. doi:10.1001/jamasurg.2013.3977.
Study concept and design: All authors.
Acquisition of data: Glance.
Analysis and interpretation of data: Glance, Osler, Mukamel, Dick.
Drafting of the manuscript: Glance.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Glance, Osler, Mukamel, Dick.
Obtained funding: Glance, Mukamel.
Administrative, technical, or material support: Glance, Meredith.
Study supervision: Glance.
Conflict of Interest Disclosures: None reported.
Funding/Support: This project was supported by grant RO1 HS 16737 from the Agency for Healthcare Research and Quality.
Role of the Sponsor: The Agency for Healthcare Research and Quality had no role in the design and conduct of the study; collection, management, analysis, or interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Disclaimer: The views presented in this manuscript are those of the authors and may not reflect those of the Agency for Healthcare Research and Quality. These data were obtained from the American College of Surgeons National Trauma Data Bank, which is not responsible for any analyses, interpretations, or conclusions.