Accepted for Publication: March 3, 2011.
Published Online: May 9, 2011. doi:10.1001/archinternmed.2011.206
Author Contributions: Drs Kistler and Walter 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: Walter. Acquisition of data: Kistler, Lee, and Walter. Analysis and interpretation of data: Kistler, Kirby, Lee, Casadei, and Walter. Drafting of the manuscript: Kistler and Walter. Critical revision of the manuscript for important intellectual content: Kirby, Lee, Casadei, and Walter. Statistical analysis: Kistler and Kirby. Obtained funding: Walter. Administrative, technical, and material support: Casadei.
Financial Disclosure: None reported.
Funding/Support: Work for this research was supported by the VA Quality Scholars Program, National Institute on Aging grant T32 AG000212-16, Agency for Healthcare Research and Quality Mentored Career Development Program in Comparative Effectiveness Development grant K12 HS19468-01, the Cecil G. Sheps Center for Health Services Research, and the Lineberger Cancer Center at the University of North Carolina at Chapel Hill (Dr Kistler); and by VA Health Services Research and Development grant IIR-04-427 and National Cancer Institute grant 1R01CA134425 (Dr Walter).
Role of the Sponsors: The funding institutions had no role in the design, conduct, or analysis of this study or in the decision to submit the manuscript for publication.