Abstract
The Alzheimer’s Disease Neuroimaging Initiative (ADNI) is a large multi-center study designed to develop optimized methods for acquiring longitudinal neuroimaging, cognitive, and biomarker measures of AD progression in a large cohort of patients with Alzheimer’s disease (AD), patients with Mild Cognitive Impairment, and healthy controls. Detailed neuropsychological testing was conducted on all participants. We examined the factor structure of the ADNI Neuropsychological Battery across older adults with differing levels of clinical AD severity based on the Clinical Dementia Rating Scale (CDR). Confirmatory factor analysis (CFA) of 23 variables from 10 neuropsychological tests resulted in five factors (memory, language, visuospatial functioning, attention, and executive function/processing speed) that were invariant across levels of cognitive impairment. Thus, these five factors can be used as indicators of cognitive function in older adults who are participants in ADNI.
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Acknowledgements
We gratefully acknowledge a conference grant from the National Institute on Aging (R13AG030995, PI: Dan Mungas) that facilitated data analysis for this project.
Dr. Park was supported by a grant from the National Institute of Aging (R01 AG031252 PI: Sarah Farias). Dr. Gross was supported by a National Institutes of Health Translational Research in Aging fellowship (T32 AG023480, PI: Lewis Lipsitz) and a grant from the National Institute on Aging (P01 AG031720 PI: Sharon Inouye). Dr. McLaren was supported by National Institute on Aging grants AG036694 (PI: Reisa Sperling) and AG027171 (PI: Alireza Atri). Dr. Pa was supported by the National Institute on Aging (K01 AG034175, PI: Dr. Pa). Dr. Johnson was supported by a grant from the National Institute of Aging grant AG022538 (PI: Johnson). Dr. Manly was supported by National Institute on Aging grants AG028786 (PI: Manly) and AG037212 (PI: Mayeux).
Data collection and sharing for this project was funded by the Alzheimer’s Disease Neuroimaging Initiative (ADNI) (National Institutes of Health Grant U01 AG024904). ADNI is funded by the National Institute on Aging, the National Institute of Biomedical Imaging and Bioengineering, and through generous contributions from the following: Abbott; Alzheimer’s Association; Alzheimer’s Drug Discovery Foundation; Amorfix Life Sciences Ltd.; AstraZeneca; Bayer HealthCare; BioClinica, Inc.; Biogen Idec Inc.; Bristol-Myers Squibb Company; Eisai Inc.; Elan Pharmaceuticals Inc.; Eli Lilly and Company; F. Hoffmann-La Roche Ltd and its affiliated company Genentech, Inc.; GE Healthcare; Innogenetics, N.V.; Janssen Alzheimer Immunotherapy Research & Development, LLC.; Johnson & Johnson Pharmaceutical Research & Development LLC.; Medpace, Inc.; Merck & Co., Inc.; Meso Scale Diagnostics, LLC.; Novartis Pharmaceuticals Corporation; Pfizer Inc.; Servier; Synarc Inc.; and Takeda Pharmaceutical Company. The Canadian Institutes of Health Research is providing funds to support ADNI clinical sites in Canada. Private sector contributions are facilitated by the Foundation for the National Institutes of Health (www.fnih.org). The grantee organization is the Northern California Institute for Research and Education, and the study is coordinated by the Alzheimer’s Disease Cooperative Study at the University of California, San Diego. ADNI data are disseminated by the Laboratory for Neuro Imaging at the University of California, Los Angeles. This research was also supported by NIH grants P30 AG010129, K01 AG030514, and the Dana Foundation.
The contents do not represent the views of the Dept. of Veterans Affairs, the United States Government, or any other funding entities.
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Data used in preparation of this article were obtained from the Alzheimer’s Disease Neuroimaging Initiative (ADNI) database (adni.loni.ucla.edu). As such, the investigators with the ADNI contributed to the design and implementation of ADNI and/or provided data but did not participate in the analysis or writing of this report. A complete listing of ADNI investigators can be found at: http://adni.loni.ucla.edu/wpcontent/uploads/how_to_apply/ADNI_Acknowledgement_List.pdf
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Correlation Matrix for Neuropsychological Tests by Group (n=819) (DOCX 90 kb)
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Park, L.Q., Gross, A.L., McLaren, D.G. et al. Confirmatory factor analysis of the ADNI neuropsychological battery. Brain Imaging and Behavior 6, 528–539 (2012). https://doi.org/10.1007/s11682-012-9190-3
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DOI: https://doi.org/10.1007/s11682-012-9190-3