Accepted for Publication: July 7, 2011.
Published Online: September 12, 2011. doi:10.1001/archneurol.2011.221
Author Contributions:Study concept and design: Wingo and Cutler. Acquisition of data: Wingo, Lah, and Levey. Analysis and interpretation of data: Wingo, Lah, Levey, and Cutler. Drafting of the manuscript: Wingo and Cutler. Critical revision of the manuscript for important intellectual content: Wingo, Lah, Levey, and Cutler. Statistical analysis: Wingo and Cutler. Obtained funding: Lah, Levey, and Cutler. Administrative, technical, and material support: Wingo. Study supervision: Wingo, Lah, Levey, and Cutler.
Financial Disclosure: None reported.
Funding/Support: This work was supported by Department of Veteran Affairs grant CDA1-002-09F (Dr Wingo), National Institute on Aging/National Institutes of Health grants P50 AG025688 (Dr Levey) and U01 AG016976 (Walter A. Kukull, PhD, for the National Alzheimer's Coordinating Center), and Genome Research Institute/National Institutes of Health grant R01 HG003461 (Dr Cutler).
Additional Contributions: We are grateful to the patients and their families and all ADCs for contributing to this study. We thank Michael Zwick, PhD, and Stephen Warren, PhD, for helpful criticisms on early drafts of the manuscript.