Accepted for Publication: November 13, 2014.
Published Online: February 2, 2015. doi:10.1001/jamainternmed.2014.7756.
Study concept and design: Greysen, Auerbach, Covinsky.
Acquisition, analysis, or interpretation of data: Greysen, Cenzer, Covinsky.
Drafting of the manuscript: Greysen, Auerbach, Covinsky.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Greysen, Cenzer, Covinsky.
Obtained funding: Greysen, Covinsky.
Administrative, technical, or material support: Covinsky.
Study supervision: Auerbach, Covinsky.
Conflict of Interest Disclosures: None reported.
Funding/Support: Dr Greysen is supported by the National Institutes of Health (NIH), National Institute of Aging (NIA) through the Claude D. Pepper Older Americans Independence Center (grant P30AG021342 NIH/NIA), a Career Development Award (grant 1K23AG045338-01), and the NIH-NIA Loan Repayment Program. Dr Covinsky is supported by the NIA through a K-24 Career Mentoring Award and an R01 from the National Institute for Nursing Research.
Role of the Funder/Sponsor: The funding sources 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: Dr Covinsky is an associate editor of JAMA Internal Medicine but was not involved in the editorial review or the decision to accept the manuscript for publication.
Previous Presentations: This article was presented as a Presidential Poster Finalist and recognized with the New Investigator Award at the 2014 Annual Meeting of the American Geriatrics Society; May 14, 2015; Lake Buena Vista, Florida; and was also presented at the 2014 Annual Meeting of the Society for Hospital Medicine; March 25, 2014; Las Vegas, Nevada.
Additional Contributions: John Boscardin, PhD, Divisions of Biostatistics and Epidemiology and Geriatric Medicine, University of California, San Francisco, provided expert statistical advice. He was not compensated for his contribution.