The factor structure of the Cornell Scale for Depression in Dementia among probable Alzheimer's disease patients

Author(s): Ownby, R. L., Barker, W. W., Duara, R.

Journal/Book: Amer J Geriatr Psychiatr. 1998; 6: 1400 K St NW, Washington, DC 20005. Amer Psychiatric Association. 212-220.

Abstract: The authors rated 137 outpatients with probable Alzheimer's disease (AD) on the Cornell Scale for Depression in Dementia (CSDD) as part of routine evaluation, Principal-factors analysis with varimax rotation resulted in a four-factor solution that accounted for 431% of the common variance. The four factors included general depression (lack of reactivity to pleasant events, poor self-esteem, pessimism, loss of interest, physical complaints, psychomotor retardation, sadness); rhythm disturbances (difficulty failing asleep, multiple night awakenings, early morning awakenings, weight loss, diurnal variation of mood); agitation/psychosis (agitation, mood-congruent delusions, suicide); and negative symptoms (appetite loss, weight loss, lack of energy, loss of interest, lack of reactivity to pleasant events). The observed factor structure showed moderate concordance with the five symptom clusters proposed in the original presentation of the CSDD.

Note: Article Harwood DG, Mt Sinai Med Ctr, Wien Ctr Alzheimers Dis & Memory Disorders, 4300 Alton Rd, Miami Beach,FL 33140 USA

Keyword(s): MINI-MENTAL-STATE; SYMPTOMS; HALLUCINATIONS; PSYCHOSIS

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