Accepted for Publication: July 16, 2012.
Published Online: January 21, 2013. doi:10.1001/jamainternmed.2013.1868
Author Contributions: Dr Lin 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: Lin and Simonsick. Acquisition of data: Yaffe, Harris, Purchase-Helzner, Satterfield, Ayonayon, and Simonsick. Analysis and interpretation of data: Lin, Yaffe, Xia, Xue, Ayonayon, Ferrucci, and Simonsick. Drafting of the manuscript: Lin. Critical revision of the manuscript for important intellectual content: Lin, Yaffe, Xia, Xue, Harris, Purchase-Helzner, Satterfield, Ayonayon, Ferrucci, and Simonsick. Statistical analysis: Xia and Xue. Obtained funding: Lin. Administrative, technical, or material support: Lin, Yaffe, Harris, Purchase-Helzner, Satterfield, Ayonayon, Ferrucci, and Simonsick. Study supervision: Lin and Simonsick.
Health ABC Principal Investigators and Staff:Clinical sites: University of Pittsburgh, Pittsburgh, Pennsylvania: Anne B. Newman, MD, MPH, principal investigator, and Diane Ives, study coordinator; University of Tennessee, Memphis: Suzanne Satterfield, MD, DrPH, principal investogator, and Jan Elam, study coordinator; Health ABC Coordinating Center: Steven R. Cummings, MD, and Michael C. Nevitt, PhD, principal investigators, Susan M. Rubin, MPH, project director; Sponsor: Tamara B. Harris, MD, and Melissa E. Garcia, MPH, National Institute on Aging (project office).
Conflict of Interest Disclosures: Dr Lin reports being a consultant to Pfizer and an unpaid speaker for Cochlear Europe, a cochlear implant manufacturer.
Funding/Support: This study was funded by contracts N01-AG62101, N01-AG62103, and N01-AG62106 and grant R01-AG028050 from the National Institute on Aging and The Johns Hopkins Older Americans Independence Center under contract P30-AG02133 from the National Institute on Aging (Dr Xue) and by grants R01-NR012459 from the National Institute of Nursing Research and K23DC011279 from the National Institute on Deafness and Other Communication Disorders and by a Triological Society/American College of Surgeons Clinician Scientist Award (Dr Lin).
Role of the Sponsors: The Intramural Research Program of the National Institute on Aging participated in the design and conduct of the study; in the collection, analysis, and interpretation of the data; and in the preparation, review, and approval of the manuscript.