Published Online: October 6, 2014. doi:10.1001/jamainternmed.2014.5225.
Study concept and design: Linder, Doctor, Friedberg, Meeker, Fox.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Linder, Fox.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Linder, Friedberg, Reyes Nieva, Birks.
Obtained funding: Linder, Doctor, Meeker, Fox.
Administrative, technical, or material support: Linder, Doctor, Reyes Nieva.
Study supervision: Linder, Reyes Nieva.
Conflict of Interest Disclosures: None reported.
Funding/Support: This work was supported by grant RC4 AG039115 from the National Institutes of Health/National Institute on Aging.
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 decision to submit the manuscript for publication.
Previous Presentations: This study was presented in part at AcademyHealth; June 24, 2013; Baltimore, Maryland; and at IDWeek; October 4, 2013; San Francisco, California.
Additional Contributions: Dwan Pineros, BA, Geisel School of Medicine at Dartmouth, provided assistance with the data analysis. He did not receive financial compensation.