Author Contributions: Dr Arora 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. Study concept and design: Yoder, Staisiunas, Meltzer, Knutson, and Arora. Acquisition of data: Yoder, Staisiunas, Meltzer, Knutson, and Arora. Analysis and interpretation of data: Yoder, Meltzer, Knutson, and Arora. Drafting of the manuscript: Yoder, Staisiunas, Knutson, and Arora. Critical revision of the manuscript for important intellectual content: Yoder, Staisiunas, Meltzer, Knutson, and Arora. Statistical analysis: Yoder, Meltzer, and Arora. Obtained funding: Staisiunas, Meltzer, and Arora. Administrative, technical, and material support: Yoder, Staisiunas, Meltzer, Knutson, and Arora. Study supervision: Staisiunas, Meltzer, and Arora.
Financial Disclosure: None reported.
Funding/Support: We acknowledge funding by the National Institute on Aging through a Short-Term Aging-Related Research Program (1T35AG028785-01A1), National Institute on Aging career development award (1K23AG033763-01A1), a midcareer career development award (1 K24 AG031326-01), a Program Project (PO1 AG-11412), and the Agency for Healthcare Research and Quality Centers for Education and Research on Therapeutics (1U18HS016967-01).
Role of the Sponsors: The sponsors had no role in the design or conduct of the study; collection, management, analysis, or interpretation of the data; or preparation, review, or approval of the manuscript.
Previous Presentation: The data were previously presented at the 2011 Society of Hospital Medicine Annual Meeting; May 11, 2011; Dallas, Texas.
Additional Contributions: We thank Eve Van Cauter, PhD, of the Sleep, Metabolism, and Health Center at the University of Chicago for her support on this project.