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All subjects in this study were selected from the Alzheimer's Disease Neuroimaging Initiative (ADNI) database (http://adni.loni.usc.edu/). We analyzed data available as of May 2013. ADNI is a comprehensive, multisite longitudinal study designed to identify biomarkers http://www.selleckchem.com/products/Adriamycin.html to predict the progression of MCI and AD. It was launched in 2003 as a public�Cprivate partnership. The MRI data used in this study was obtained at baseline from subjects enrolled in the initial phase (ADNI-1). Study subjects gave written informed consent at enrollment for data collection, storage and use for research. Each participating institution's Institutional Review Board approved the study. The data were anonymized before being made publicly available. At baseline, subjects were medically stable, free from significant neurological and psychiatric conditions, and did not have significant cerebrovascular risk factors. For additional information about ADNI, including data collection and full inclusion and exclusion criteria, see http://www.adni-info.org. Data from four groups of subjects were included in the current study: 127 individuals who were cognitively normal at baseline and remained cognitively normal for at least 3?years (stable normal group); 104 individuals diagnosed with MCI at baseline who retained a diagnosis of MCI for at least 3?years (stable MCI group); 106 individuals who were diagnosed with MCI at baseline and progressed to AD-dementia within 3?years; and 108 participants with a baseline diagnosis of AD-dementia. All participants had an MRI scan at their baseline visit and were http://www.selleckchem.com/products/LBH-589.html administered the Clinical Dementia Rating (CDR) scale (Morris, 1993). The baseline CDR score was 0 for the cognitively normal group, 0.5 for the stable and progressive MCI groups and 0.5�C1 for AD-dementia group. See Table 1 for participant characteristics at baseline. One-way analyses of variance (ANOVAs) https://en.wikipedia.org/wiki/Pentamorphone indicated that there was no age difference across diagnostic groups (p?>?0.6), but that education differed between groups (F?=?7.45, p?
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