Study concept and design: Sanford, Carroll, Breyer.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Sanford, Breyer.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Sanford, McCulloch, Breyer.
Obtained funding: Breyer.
Administrative, technical, or material support: Callcut, Carroll, Breyer.
Study supervision: Breyer.
Conflict of Interest Disclosures: The authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Dr Breyer reported serving on an advisory board for American Medical Systems. No other disclosures were reported.
Funding/Support: Dr Breyer is supported by grant K12DK083021 from the National Institute of Diabetes and Digestive and Kidney Diseases. Dr Callcut is supported by grant 8KL2TR000143-09 from the National Institutes of Health.
Role of the Funder/Sponsor: The National Institute of Diabetes and Digestive and Kidney Diseases and the National Institutes of Health had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Additional Contributions: We thank Thomas Schroeder, MS, from the National Electronic Injury Surveillance System (NEISS) for his assistance with the current NEISS sample; no compensation was received.