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

Roberto Nuevo, Somnath Chatterji, Emese Verdes, Nirmala Naidoo, Celso Arango, José Luis Ayuso-Mateos

Research output: Contribution to journalArticle

Abstract

OBJECTIVE: To identify the cross-national prevalence of psychotic symptoms in the general population and to analyze their impact on health status.

METHOD: 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.

RESULTS: 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).

CONCLUSIONS: 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 they are common and are related to a significant decrement in health status. The presence of at least one psychotic symptom is related to a significant poorer health status, with a regular linear decrement in health depending on the number of symptoms.

Original languageEnglish
Pages (from-to)475-485
Number of pages11
JournalSchizophrenia Bulletin
Volume38
Issue number3
Early online date13 Sep 2010
DOIs
Publication statusPublished - May 2012

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Health Status
Delusions
Population
Psychotic Disorders
Health
Health Surveys
Public Health

Keywords

  • World Health Organization
  • Africa
  • Asia
  • cross-cultural comparison
  • delusions
  • Europe
  • South America
  • hallucinations
  • psychotic disorders
  • prevalence
  • North America

Cite this

Nuevo, R., Chatterji, S., Verdes, E., Naidoo, N., Arango, C., & Ayuso-Mateos, J. L. (2012). The continuum of psychotic symptoms in the general population: a cross-national study. Schizophrenia Bulletin, 38(3), 475-485. https://doi.org/10.1093/schbul/sbq099
Nuevo, Roberto ; Chatterji, Somnath ; Verdes, Emese ; Naidoo, Nirmala ; Arango, Celso ; Ayuso-Mateos, José Luis. / The continuum of psychotic symptoms in the general population : a cross-national study. In: Schizophrenia Bulletin. 2012 ; Vol. 38, No. 3. pp. 475-485.
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abstract = "OBJECTIVE: To identify the cross-national prevalence of psychotic symptoms in the general population and to analyze their impact on health status.METHOD: 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.RESULTS: 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).CONCLUSIONS: 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 they are common and are related to a significant decrement in health status. The presence of at least one psychotic symptom is related to a significant poorer health status, with a regular linear decrement in health depending on the number of symptoms.",
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Nuevo, R, Chatterji, S, Verdes, E, Naidoo, N, Arango, C & Ayuso-Mateos, JL 2012, 'The continuum of psychotic symptoms in the general population: a cross-national study', Schizophrenia Bulletin, vol. 38, no. 3, pp. 475-485. https://doi.org/10.1093/schbul/sbq099

The continuum of psychotic symptoms in the general population : a cross-national study. / Nuevo, Roberto; Chatterji, Somnath; Verdes, Emese; Naidoo, Nirmala; Arango, Celso; Ayuso-Mateos, José Luis.

In: Schizophrenia Bulletin, Vol. 38, No. 3, 05.2012, p. 475-485.

Research output: Contribution to journalArticle

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AU - Nuevo, Roberto

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AU - Arango, Celso

AU - Ayuso-Mateos, José Luis

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N2 - OBJECTIVE: To identify the cross-national prevalence of psychotic symptoms in the general population and to analyze their impact on health status.METHOD: 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.RESULTS: 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).CONCLUSIONS: 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 they are common and are related to a significant decrement in health status. The presence of at least one psychotic symptom is related to a significant poorer health status, with a regular linear decrement in health depending on the number of symptoms.

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KW - South America

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KW - prevalence

KW - North America

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Nuevo R, Chatterji S, Verdes E, Naidoo N, Arango C, Ayuso-Mateos JL. The continuum of psychotic symptoms in the general population: a cross-national study. Schizophrenia Bulletin. 2012 May;38(3):475-485. https://doi.org/10.1093/schbul/sbq099