Published Online: May 14, 2012. doi:10.1001/archinternmed.2012.1416
Author Contributions: Dr Seabury 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: Jena, Chandra, Lakdawalla, and Seabury. Acquisition of data: Seabury. Analysis and interpretation of data: Jena, Chandra, and Seabury. Drafting of the manuscript: Jena, Chandra, Lakdawalla, and Seabury. Critical revision of the manuscript for important intellectual content: Jena, Chandra, and Seabury. Statistical analysis: Jena, Chandra, Lakdawalla, and Seabury. Obtained funding: Seabury. Administrative, technical, and material support: Seabury. Study supervision: Jena, Chandra and Seabury.
Financial Disclosure: None reported.
Funding/Support: Dr Chandra was supported by National Institute on Aging (NIA) grant P01 AG19783-02; Dr Lakdawalla, by NIA grants 7R01AG031544 and 1RC4AG039036-01 and the NIA Roybal Center at the University of Southern California (5P30AG024968); and Dr Seabury, by NIA grant 7R01AG031544.
Role of the Sponsors: The funding agencies had no role in the design and conduct of the study; in the collection, analysis, and interpretation of the data; or in the preparation, review, or approval of the manuscript.