Accepted for Publication: April 15, 2013.
Published Online: October 16, 2013. doi:10.1001/jamasurg.2013.3953.
Study concept and design: Padwal, Klarenbach, Sharma, Majumdar.
Acquisition of data: Padwal.
Analysis and interpretation of data: Padwal, Wang, Sharma, Karmali, Birch, Majumdar.
Drafting of the manuscript: Padwal, Wang.
Critical revision of the manuscript for important intellectual content: Padwal, Klarenbach, Sharma, Karmali, Birch, Majumdar.
Statistical analysis: Padwal, Wang, Majumdar.
Obtained funding: Padwal, Majumdar.
Administrative, technical, and material support: Padwal, Sharma, Karmali, Birch.
Study supervision: Padwal.
Conflict of Interest Disclosures: Drs Padwal, Klarenbach, Sharma, and Majumdar are supported by an alternative funding plan from the Government of Alberta and the University of Alberta. Dr Sharma is supported by an Alberta Health Services Chair in Obesity Research and Management. Drs Klarenbach and Majumdar hold salary support awards from Alberta Heritage Foundation for Medical Research and Alberta Innovates-Health Solutions. Dr Majumdar holds the Endowed Chair in Patient Health Management of the Faculties of Medicine and Dentistry and Pharmacy and Pharmaceutical Sciences, University of Alberta. Dr Karmali has received honoraria from and has consulted for Ethicon Endo-Surgery, Covidien, and Gore (bariatric surgery equipment manufacturers). Dr Birch has received research funding from Johnson and Johnson and Ethicon Endo-Surgery and has consulted for Johnson and Johnson, Ethicon Endo-Surgery, Covidien, Bard, Baxter, and Olympus. No other disclosures were reported.
Funding/Support: This study was supported by research grants 106572 and 86642 from the Canadian Institutes of Health Research.
Role of the Sponsor: The Canadian Institutes of Health Research 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.
Disclaimer: This study is based in part on data from the GPRD obtained under license from the UK Medicines and Healthcare Products Regulatory Agency. However, the interpretation and conclusions contained in this study are those of the authors alone.
Previous Presentation: This study was presented at the Third Annual Canadian Obesity Summit; May 3, 2013; Vancouver, British Columbia, Canada.