Sep 16, 2010

The continuum of psychotic symptoms in the general population: a cross-national study

Schizophrenia Bulletin
Roberto NuevoJosé L Ayuso-Mateos

Abstract

To identify the cross-national prevalence of psychotic symptoms in the general population and to analyze their impact on health status. The sample was composed of 256,445 subjects (55.9% women), from nationally representative samples of 52 countries worldwide participating in the World Health Organization's World Health Survey. Standardized and weighted prevalence of psychotic symptoms were calculated in addition to the impact on health status as assessed by functioning in multiple domains. Overall prevalences for specific symptoms ranged from 4.80% (SE = 0.14) for delusions of control to 8.37% (SE = 0.20) for delusions of reference and persecution. Prevalence figures varied greatly across countries. All symptoms of psychosis produced a significant decline in health status after controlling for potential confounders. There was a clear change in health impact between subjects not reporting any symptom and those reporting at least one symptom (effect size of 0.55). The prevalence of the presence of at least one psychotic symptom has a wide range worldwide varying as much as from 0.8% to 31.4%. Psychotic symptoms signal a problem of potential public health concern, independent of the presence of a full diagnosis of psychosis, as t...Continue Reading

Mentioned in this Paper

Delusions
World Health Organization
Hallucinations, Visual, Unformed
Psychotic Disorders
Public Health Domain
Schizophreniform Disorders
Psychotic Symptom
Transcultural Studies

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