Published Online: February 18, 2013. doi:10.1001/jamainternmed.2013.2732
Author Contributions: All authors had full access to all of the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Au, Khandwala, and Stelfox. Acquisition of data: Au. Analysis and interpretation of data: Au, Khandwala, and Stelfox. Drafting of the manuscript: Au, Khandwala, and Stelfox. Critical revision of the manuscript for important intellectual content: Au and Stelfox. Statistical analysis: Khandwala. Obtained funding: Stelfox. Administrative, technical, and material support: Stelfox. Study supervision: Stelfox.
Conflict of Interest Disclosures: None reported.
Funding/Support: This project was supported by an establishment grant from Alberta Innovates. Dr Stelfox is supported by a New Investigator Award from the Canadian Institutes of Health Research and a Population Health Investigator Award from Alberta Innovates.
Role of the Sponsors: The funding sources had no role in the design, conduct, or reporting of this study.
Previous Presentation: This study was presented at the 41st Critical Care Congress; February 4, 2012; Houston, Texas.
Additional Contributions: We thank Barbara Artiuch, MD, and Jessalyn Holidinsky, BSc, for their help with administering the survey instrument and Matthew James, MD, PhD, for his comments on earlier versions of the manuscript.