Accepted for Publication: November 8, 2014.
Published Online: February 23, 2015. doi:10.1001/jamainternmed.2014.8273.
Study concept and design: Brown, Valenta, Fisman, Daneman.
Acquisition, analysis, or interpretation of the data: Brown, Simor, Daneman.
Drafting of the manuscript: Brown.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Brown.
Obtained funding: Brown, Fisman.
Administrative, technical, or material support: Brown, Valenta, Simor, Daneman.
Study supervision: Fisman, Daneman.
Conflict of Interest Disclosures: Dr Simor reported receiving honoraria for speaking on behalf of Optimer Pharmaceuticals Inc Canada (now Cubist Pharmaceuticals). No other disclosures were reported.
Funding/Support: This study was supported by a doctoral research award from the Canadian Institutes for Health Research (Dr Brown).
Role of the Funder/Sponsor: The funding source 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 the decision to submit the manuscript for publication.
Additional Contributions: Marion Elligsen, BScPhm, developed the infection prevention and control database and aided in antimicrobial coding. Dariusz Pajak, BASc, CPHI(C), provided important information on hospital ward configuration.