Accepted for Publication: January 16, 2013.
Author Contributions: Dr Tak had full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. All authors made substantial contributions to the manuscript and attest to the validity and legitimacy of the data, as well as its interpretation.
Study concept and design: Tak and Meltzer.
Acquisition of data: Meltzer.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: All authors.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: All authors.
Obtained funding: Meltzer.
Administrative, technical, and material support: Meltzer.
Study supervision: Meltzer.
Published Online: May 27, 2013. doi:10.1001/jamainternmed.2013.6048.
Conflict of Interest Disclosures: None reported.
Funding/Support: This work was funded by grant U18 HS016967-01 from the Agency for Healthcare Quality and Research through the Hospital Medicine and Economics Center for Education and Research in Therapeutics (Dr Meltzer), by grant 1 K24 AG031326-01 from the National Institute of Aging through a Midcareer Career Development Award (Dr Meltzer), and by grant KM1 CA156717 from the National Cancer Institute (principal investigator Dr Meltzer and awardee Dr Ruhnke).
Role of the Sponsor: The funding sources had no role in the design or conduct of the study; the collection, management, analysis, or interpretation of the data; or the preparation, review, or approval of the manuscript.