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Morbid Risk of Schizophrenia in First-Degree Relatives of White and African–Caribbean Patients with Psychosis

Published online by Cambridge University Press:  02 January 2018

G. Hutchinson ,
N. Takei ,
T. A. Fahy ,
D. Bhugra ,
C. Gilvarry ,
P. Moran ,
R. Mallett ,
P. Sham ,
J. Leff  and
R. M. Murray
G. Hutchinson
Affiliation:
Department of Psychological Medicine, Institute of Psychiatry, London
N. Takei
Affiliation:
Department of Psychological Medicine, Institute of Psychiatry, London
T. A. Fahy
Affiliation:
Maudsley Hospital, London
D. Bhugra
Affiliation:
Department of Social Psychiatry, Institute of Psychiatry, London
C. Gilvarry
Affiliation:
Department of Psychological Medicine, Institute of Psychiatry, London
P. Moran
Affiliation:
Maudsley Hospital, London
R. Mallett
Affiliation:
MRC Unit, Institute of Psychiatry, London
P. Sham
Affiliation:
Department of Psychological Medicine, Institute of Psychiatry, London
J. Leff
Affiliation:
MRC Unit, Institute of Psychiatry, London
R. M. Murray*
Affiliation:
Institute of Psychiatry and King's College Hospital, London
*
Professor R. M. Murray, Institute of Psychiatry and King's College Hospital, De Crespigny Park, Denmark Hill, London SE5 8AF
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Abstract

Background

The high rate of schizophrenia among the second-generation African–Caribbean population in Britain has prompted much concern and speculation. Sugarman and Craufurd have reported that the morbid risk in the siblings of second-generation African–Caribbean schizophrenic patients was unusually high compared with that of the siblings of White patients.

Method

We sought to replicate these findings by comparing the morbid risk for schizophrenia in the first-degree relatives of 111 White and 73 African–Caribbean psychotic probands. The latter comprised 35 first-generation (bom in the Caribbean) and 38 second-generation (born in Britain) probands.

Results

The morbid risk for schizophrenia was similar for the parents and siblings of White and first-generation African–Caribbean patients, and for the parents of the second-generation African–Caribbean probands. However, the siblings of second-generation African–Caribbean psychotic probands had a morbid risk for schizophrenia that was seven times that of their White counterparts (P=0.007); similarly, the siblings of second-generation African–Caribbean schizophrenic probands had a morbid risk for schizophrenia that was four times that of their White counterparts (P=0.05).

Conclusions

These findings replicate those of the earlier report of Sugarman and Craufurd, and suggest either that the second-generation African–Caribbean population in Britain is particularly vulnerable to some environmental risk factors for schizophrenia, or that some environmental factors act selectively on this population in Britain.

Type
Papers
Information
The British Journal of Psychiatry , Volume 169 , Issue 6 , December 1996 , pp. 776 - 780
Copyright
Copyright © 1996 The Royal College of Psychiatrists 

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References

American Psychiatric Association (1980) Diagnostic and Statistical Manual of Mental Disorders, (3rd edn) (DSM–III) Washington, DC: APA.Google Scholar
Andreasen, N. C., Rice, J., Endicott, J., et al (1986) The family history approach to diagnosis. How useful is it? Archives of General Psychiatry, 43, 421–429.Google Scholar
Bhugra, D., Leff, J., Mallett, R., et al (1996) Incidence and outcome of schizophrenia in whites, African–Caribbeans and Asians in London. British Medical Journal, in press.Google Scholar
Davies, N., Sham, P. C., Gilvarry, C., et al (1996) A comparison of family history and family study method. Report from the Camberwell Collaborative Psychosis Study. Schizophrenia Research. In press.Google Scholar
Endicott, J., Andreasen, N. & Spitzer, R. L. (1975) Family History–Research Diagnostic Criteria. New York, NY: New York State Psychiatric Institute.Google Scholar
Glover, G. R. (1989) Differences in psychiatric admission patterns between Caribbeans from different islands. Social Psychiatry and Psychiatric Epidemiology, 24, 209–211.Google ScholarPubMed
Gottesman, I. I. (1991) Schizophrenia Genesis: The Origin of Madness. New York, NY: W. H. Freeman.Google Scholar
Harrison, G., Owens, D., Holton, A., et al (1988) A prospective study of severe mental disorder in Afro-Caribbean patients. Psychological Medicine, 18, 643–657.CrossRefGoogle ScholarPubMed
Hickling, F. W. & Rodgers-Johnson, P. (1995) The incidence of first contact schizophrenia in Jamaica. British Journal of Psychiatry, 167, 193–196.Google Scholar
Jones, P. B., Bebbington, P., Foerster, A., et al (1993) Premorbid social underachievement in schizophrenia. Results from the Camberwell Collaborative Psychosis Study. British Journal of Psychiatry, 162, 65–71.Google Scholar
Kendler, K. S. & Roy, M. A. (1995) Validity of a diagnosis of lifetime major depression obtained by personal interview versus family history. American Journal of Psychiatry, 152, 1608–1614.Google Scholar
Littlewood, R. & Lipsedge, M. (1981) Some social and phenomenological characteristics of psychotic immigrants. Psychological Medicine, 11, 289–302.Google Scholar
McGuffin, P., Farmer, A. & Harvey, I. (1991) A polydiagnostic application of operational criteria in studies of psychotic illness: development and reliability of the OPCRIT system. Archives of General Psychiatry, 48, 764–770.Google Scholar
McKenzie, K. J., Van Os, J., Fahy, T. A., et al (1995) Psychosis with good prognosis in Afro-Caribbeans now living in the United Kingdom. British Medical Journal, 311, 1325–1328.Google Scholar
McKenzie, K. J., & Murray, R. M. (1997) Risk factors for psychosis among Afro-Caribbeans in Britain. In Ethnicity: An Agenda for Mental Health (eds Bhugra, D. & Bahl, V.). London: Gaskell, in press.Google Scholar
Murray, R. M., O'Callaghan, E., Castle, D. J., et al (1992) A neurodevelopmental approach to the classification of schizophrenia. Schizophrenia Bulletin, 18, 319–332.Google Scholar
Roy, M.-A., Walsh, D. & Kendler, K. S. (1996) Accuracies and inaccuracies of the family history method: a multivariate approach. Acta Psychiatrica Scandinavica, 93, 224–234.Google Scholar
Sham, P., Jones, P. B., Russell, A., et al (1994) Age at onset, sex, and familial psychiatric morbidity in schizophrenia. Camberwell Collaborative Psychosis. British Journal of Psychiatry, 165, 466–473.Google Scholar
Slater, E. & Cowie, V. (1971) The Genetics of Mental Disorders. London: Oxford University Press.Google Scholar
Spitzer, R. L., Endicott, J. & Robins, E. (1975) Research Diagnostic Criteria (RDC) for a Selected Group of Functional Disorders (2nd edn). New York, NY: New York State Psychiatric Institute.Google Scholar
Sugarman, P. A. & Craufurd, D. (1994) Schizophrenia in the Afro-Caribbean community. British Journal of Psychiatry, 164, 474–480.CrossRefGoogle ScholarPubMed
Wessely, S., Castle, D., Der, G., et al (1991) Schizophrenia and Afro-Caribbeans: a case-control study. British Journal of Psychiatry, 159, 795–801.Google Scholar
Wing, J. K., Cooper, J. E. & Sartorius, N. (1974) Measurement and Classification of Psychiatric Symptoms. Cambridge: Cambridge University Press.Google Scholar
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