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We followed 65 patients with probable Alzheimer's disease, who were initially mildly to moderately impaired, with semiannual assessments of cognitive and functional performance for up to 4 years. Scores on the Mini Mental State Examination and a combination of instrumental and self-maintenance scale of activities of daily living were regressed on time of(More)
Sixty patients with Parkinson's disease were administered a battery of neuropsychological tests. Using regression data from a matched normal control sample, age- and education-residualized test scores were obtained for the patients. Three clusters of patients were identified: those with both verbal memory and visuospatial reasoning disorders (n = 24), those(More)
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