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Abstract

The factor structure of the Brief Psychiatric Rating Scale (BPRS) is well established with young psychiatric patients. A study by Overall and Beller showed, however, that its factor structure was different with geropsychiatric patients. Although the BPRS has been used in assessing the behavioral characteristics of patients with probable Alzheimer's disease (AD), its factor structure has not been established with these patients. The present study investigated the factor structure of the BPRS among patients with clinically diagnosed AD by (NINCDS/ADRDA) criteria. The scale had limited usefulness with outpatients with mild AD. The factor structure obtained was similar to that found with other patient groups, but a unique factor, including the items Tension and Uncooperativeness, probably reflects the behavioral and psychological agitation characteristic of some AD patients. We recommend caution be taken in generalizing data from younger psychiatric samples to older adult patients with dementia.

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The Factor Structure of the Brief Psychiatric Rating Scale in Alzheimer's Disease

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