Accepted for Publication: November 2, 2014.
Published Online: January 26, 2015. doi:10.1001/jamainternmed.2014.7663.
Study concept and design: Gray, Anderson, Dublin, Hanlon, Walker.
Acquisition, analysis, or interpretation of data: Gray, Anderson, Dublin, Hubbard, Walker, Yu, Crane, Larson.
Drafting of the manuscript: Gray, Anderson, Hanlon.
Critical revision of the manuscript for important intellectual content: Gray, Anderson, Dublin, Hubbard, Walker, Yu, Crane, Larson.
Statistical analysis: Anderson, Hubbard, Walker.
Obtained funding: Gray, Crane, Larson.
Administrative, technical, or material support: Hanlon, Crane.
Study supervision: Gray.
Conflict of Interest Disclosures: Dr Dublin reports receiving a Merck/American Geriatrics Society New Investigator Award. Mr Walker reports receiving funding as a biostatistician from a research grant awarded to the Group Health Research Institute from Pfizer. Ms Yu reports receiving funding as a biostatistician from a research grant awarded to the Group Health Research Institute from Amgen. Dr Larson reports receiving royalties from UpToDate. No other disclosures were reported.
Funding/Support: This study was supported by grants R01AG 027017, R01AG037451, P30AG024827, T32 AG021885, and K07AG033174 (Dr Hanlon); grant R03AG042930 (Dr Dublin); and grant U01AG00678 (Dr Larson) from the National Institute on Aging, National Institutes of Health, and by the Branta Foundation (Dr Dublin).
Role of the Funder/Sponsor: The funding sources had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Previous Presentation: This paper was presented at the 2014 Annual American Geriatrics Society Meeting; May 16, 2014; Orlando, Florida,
Additional Contributions: Susan McCurry, PhD, Department of Psychosocial and Community Health, University of Washington, Wayne McCormick, MD, MPH, Department of Medicine, University of Washington, and James Bowen, MD, Swedish Neuroscience Institute, Seattle, Washington, participated in multidisciplinary consensus committee meetings that determined study participants’ dementia status. These individuals did not receive compensation for their role.