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Incidence of schizophrenia and other psychoses in ethnic minority groups: results from the MRC AESOP Study

Fearon, Paul and Kirkbride, James B. and Morgan, Craig and Dazzan, Paola and Morgan, Kevin D. and Lloyd, Tuhina and Hutchinson, Gerard and Tarrant, Jane and Fung, Wai Lun Alan and Holloway, John and Mallett, Rosemarie M. and Harrison, Glynn and Leff, Julian and Jones, Peter B. and Murray, Robin M. (2006) Incidence of schizophrenia and other psychoses in ethnic minority groups: results from the MRC AESOP Study. Psychological Medicine, 36 (11). pp. 1541-1550. ISSN 0033-2917

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Official URL: http://dx.doi.org/10.1017/S0033291706008774

Abstract

Background. The incidence of schizophrenia in the African-Caribbean population in England is reported to be raised. We sought to clarify whether (a) the rates of other psychotic disorders are increased, (b) whether psychosis is increased in other ethnic minority groups, and (c) whether particular age or gender groups are especially at risk. Method. We identified all people (n=568) aged 16-64 years presenting to secondary services with their first psychotic symptoms in three well-defined English areas (over a 2-year period in Southeast London and Nottingham and a 9-month period in Bristol). Standardized incidence rates and incidence rate ratios (IRR) for all major psychosis syndromes for all main ethnic groups were calculated. Results. We found remarkably high IRRs for both schizophrenia and manic psychosis in both African-Caribbeans (schizophrenia 9.1, manic psychosis 8.0) and Black Africans (schizophrenia 5.8, manic psychosis 6.2) in men and women. IRRs in other ethnic minority groups were modestly increased as were rates for depressive psychosis and other psychoses in all minority groups. These raised rates were evident in all age groups in our study. Conclusions. Ethnic minority groups are at increased risk for all psychotic illnesses but African- Caribbeans and Black Africans appear to be at especially high risk for both schizophrenia and mania. These findings suggest that (a) either additional risk factors are operating in African- Caribbeans and Black Africans or that these factors are particularly prevalent in these groups, and that (b) such factors increase risk for schizophrenia and mania in these groups.

Item Type:Article
Research Community:University of Westminster > Social Sciences, Humanities and Languages, School of
ID Code:4110
Deposited On:01 Jun 2007
Last Modified:11 Aug 2010 15:32

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