Accepted for Publication: June 17, 2013.
Published Online: December 18, 2013. doi:10.1001/jamasurg.2013.3654.
Study concept and design: Chang, Varela, Eagon, Colditz.
Acquisition of data: Chang, Stoll.
Analysis and interpretation of data: Chang, Stoll, Song, Varela, Colditz.
Drafting of the manuscript: Chang, Stoll, Varela.
Critical revision of the manuscript for important intellectual content: Chang, Stoll, Song, Eagon, Colditz.
Statistical analysis: Chang, Stoll, Song, Varela, Colditz.
Obtained funding: Chang, Colditz.
Administrative, technical, or material support: Chang, Stoll, Colditz.
Study supervision: Chang, Eagon, Colditz.
Conflict of Interest Disclosures: None reported.
Funding/Support: This publication was made possible by grants KM1CA156708-01 and U54 CA 155496 through the National Cancer Institute at the National Institutes of Health and grant K01 HS022330 through the Agency for Healthcare Research and Quality. Funding from the Foundation for Barnes-Jewish Hospital also supported this research. Dr Colditz is supported by an American Cancer Society Clinical Research Professorship.
Role of the Sponsor: The sponsors 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 conclusions and opinions presented herein are solely the responsibility of the authors and do not necessarily represent the official views the National Institutes of Health or the Barnes-Jewish Hospital Foundation.
Additional Contributions: We thank Carol Murray, MLIS, Bernard Becker Medical Library at the Washington University in St Louis, Missouri, who helped develop search strategies and performed computerized searches. We also thank Helen Dakin, PhD, at the Health Economics Research Centre, University of Oxford, for providing computer codes to help understand using WinBUGS to perform MTC meta-analysis. We acknowledge Jennifer Rowley, Ellen Murray, BA, Misty Lewis, MSW, Amanda Calhoun, BA, and Nikki Freeman, MA, for performing substantive data extraction and table editing. Finally, we thank Jean Wang, MD, in the Division of Gastroenterology and Michael Awad, MD, PhD, in the Department of Surgery, Washington University School of Medicine, for helpful conversation regarding complications associated with bariatric surgery.