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  • Title: Montreal cognitive assessment in assessing clinical severity and white matter hyperintensity in Alzheimer's disease with normal control comparison.
    Author: Chang YT, Chang CC, Lin HS, Huang CW, Chang WN, Lui CC, Lee CC, Lin YT, Chen CH, Chen NC.
    Journal: Acta Neurol Taiwan; 2012 Jun; 21(2):64-73. PubMed ID: 22879115.
    Abstract:
    PURPOSE: Use Taiwanese version of the Montreal Cognitive Assessment (MoCA) in evaluating patients in different stages of Alzheimer's disease (AD) and correlate with white matter change. METHODS: Ninety-seven normal controls (NC), 52 very-mild AD (clinical dementia rating [CDR] = 0.5), 48 mild AD (CDR = 1) and 38 moderate AD (CDR = 2) patients were enrolled for the MoCA, Mini- Mental State Examination (MMSE) and the Cognitive Assessment Screening Instrument (CASI). White matter hyperintensities (WMHs) on brain MRI were visually rated and classified as deep or periventricular WMHs. RESULTS: In NC group, education (β = 0.326) but not age (β = -0.183, p = 0.069), was significantly related to MoCA score. However, while we added two points to the AD patients with less than 6 years education, the effects of education disappeared as compared with those of 7 years of education. For all educational levels, the cutoff value of MoCA for very-mild AD was 22/23 (sensitivity = 82.7%, specificity = 87.6%). No significant differences were found in the areas under the curves that differentiated NC from the patients with AD for MoCA and MMSE (differences = 0.008, p = 0.490), or for MoCA and CASI (differences = 0.023, p = 0.082). Total WMHs, frontal deep and periventricular WMHs were inversely correlated with the attention and delayed-recall subdomain. CONCLUSION: The MoCA is a good clinical tool for screening very-mild stage AD if the educational effects are carefully considered. The correlation between the executive subdomains with the frontal WMHs also makes it a useful tool for detecting subtle WMHs.
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