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Am J Psychiatry 1994; 151:1646-1649
Copyright © 1994 by American Psychiatric Association
Clinical symptoms associated with age at onset in Alzheimer's disease
BA Lawlor, TM Ryan, J Schmeidler, RC Mohs and KL Davis
Department of Psychiatry, Mount Sinai Medical Center, New York.
OBJECTIVE: The aim of the study was to examine the relationship between age
at onset of Alzheimer's disease and demographic and clinical
characteristics in a large cohort of patients with Alzheimer's disease.
METHOD: The subjects were 104 patients meeting the criteria for Alzheimer's
disease of the National Institute of Neurological and Communicative
Disorders and Stroke. The relationships of age at disease onset to
cognitive and noncognitive variables and to rate of progression were
explored by using multiple regression analysis. RESULTS: Earlier disease
onset was associated with the presence of greater language and praxis
difficulties and with the development of higher depression scores during
the follow-up study period but not with faster disease progression.
CONCLUSIONS: These findings suggest that in Alzheimer's disease, which is a
clinically heterogeneous illness, younger age at onset may be related to
the presence of more prominent language and praxis impairment and to
development of greater depression during the disease course.
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