The incidence of first‐onset psychotic symptoms and paranoid ideation in a representative population sample followed from age 70–90 years. Relation to mortality and later development of dementia
- 20 November 2006
- journal article
- research article
- Published by Wiley in International Journal of Geriatric Psychiatry
- Vol. 22 (6), 520-528
- https://doi.org/10.1002/gps.1696
Abstract
Background Limited data are available on the incidence of psychotic symptoms in the elderly. Objective To elucidate the incidence of first-onset psychotic symptoms in the elderly and their relation to mortality and later development of dementia. Method A population-sample (n = 392) born 1901–1902 was assessed from age 70–90 with psychiatric examinations, medical record reviews and from age 85, also with key-informant interviews. Individuals developing dementia were excluded. Result The cumulative incidence of first-onset psychotic symptoms was 4.8% (8.0% including key-informant reports in the total sample) and 19.8 % in those who survived to age 85. Sixty-four percent of those with first-onset hallucinations later developed dementia, compared to 30% of those with delusions and 25% of those without psychotic symptoms. Conclusions One fifth of non-demented elderly who survives up to age 85 develops first-onset psychotic symptoms. Hallucinations predict dementia, but most elderly individuals with first-onset psychotic symptoms do not develop dementia. Copyright © 2006 John Wiley & Sons, Ltd.This publication has 26 references indexed in Scilit:
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