Published Online: June 10, 2013. doi:10.1001/jamainternmed.2013.6627.
Study concept and design: Brown, Mitchell.
Acquisition of data: Brown, Bharel, Grande.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: Brown, Grande, Mitchell.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Brown, Kiely.
Obtained funding: Mitchell.
Administrative, technical, and material support: Grande, Mitchell.
Study supervision: Bharel and Mitchell.
Conflict of Interest Disclosures: None reported.
Funding/Support: This work was supported by National Institutes of Health grant NIH-NIA T32 AG000212 and the John A. Hartford Foundation. Dr Mitchell was supported by National Institutes of Health grant NIH-NIA K24 AG033640.
Additional Contributions: Mit Patel, MD (Department of Medicine, St Elizabeth’s Medical Center, Boston, Massachusetts), Kevin L. Ard, MD, MPH (Department of Medicine, Brigham and Women’s Hospital, Boston), Deborah Blazey-Martin, MD, MPH (Department of Medicine, Tufts Medical Center, Boston), and Daniella Floru, MD (Division of Geriatric Medicine, Lemuel Shattuck Hospital, Boston) completed medical record reviews and provided comments on the manuscript.