Accepted for Publication: June 27, 2011.
Published Online: September 26, 2011. doi:10.1001/archinternmed.2011.447
Author Contributions: Study concept and design: Hillier, Pedula, Black, Cummings, and Browner. Acquisition of data: Hillier, Pedula, Cauley, Black, Cummings, and Browner. Analysis and interpretation of data: LeBlanc, Hillier, Pedula, Rizzo, Cawthon, Fink, Cauley, Bauer, and Browner. Drafting of the manuscript: LeBlanc, Rizzo, and Black. Critical revision of the manuscript for important intellectual content: LeBlanc, Hillier, Pedula, Cawthon, Fink, Cauley, Bauer, Black, Cummings, and Browner. Statistical analysis: Pedula, Rizzo, and Browner. Obtained funding: Hillier, Cauley, Cummings, and Browner. Administrative, technical, and material support: Pedula, Rizzo, Cauley, Cummings, and Browner.
Financial Disclosure: None reported.
Funding/Support: This study was supported by Public Health Service grants 2 R01 AG027574-22A1, R01 AG005407, R01 AG027576-22, 2 R01 AG005394-22A1, AG05407, AG05394, AR35583, AR35582, and AR35584 from the National Institute of Arthritis and Musculoskeletal and Skin Diseases and the National Institute on Aging. In addition, Dr LeBlanc is supported by grant K23-RR020049 from the National Center for Research Resources.
Role of the Sponsor: The SOF investigators were completely independent of the funding source to design and conduct the study including data.
Additional Contributions: Martie Sucec, BA, provided editorial assistance, and Desirée Pheister assisted with manuscript preparation.