Author Contributions: Dr Stukel had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Stukel, Fisher, Alter, Guttmann, Fung.
Acquisition of data: Stukel.
Analysis and interpretation of data: Stukel, Fisher, Alter, Guttmann, Ko, Fung, Wodchis, Baxter, Earle, Lee.
Drafting of the manuscript: Stukel.
Critical revision of the manuscript for important intellectual content: Stukel, Fisher, Alter, Guttmann, Ko, Fung, Wodchis, Baxter, Earle, Lee.
Statistical analysis: Stukel, Fung, Wodchis.
Obtained funding: Stukel.
Study supervision: Stukel.
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported.
Funding/Support: Funding was provided by an Emerging Team Grant (ETG92248) in Applied Health Services and Policy Research from the Canadian Institutes of Health Research, by a grant from the US National Institute on Aging (1PO1-AG19783-01), and by the Institute for Clinical Evaluative Sciences, which is funded by an annual grant from the Ontario Ministry of Health and Long-Term Care.
Role of the Sponsors: The funding agencies had no role in design and conduct of the study; the collection, management, analysis, and interpretation of the data; or the preparation, review, or approval of the manuscript.
Online-Only Material: The Author Video Interview is available here.
Additional Contributions: We thank Nancy MacCallum, MLIS, and Ashley Corallo, MPH, Institute for Clinical Evaluative Sciences, Toronto, for assistance with manuscript preparation. These individuals received no compensation beyond salary for their contributions.