Related Experiment Videos
Social environment, ethnicity and schizophrenia. A case-control study
Rosemarie Mallett1, Julian Leff, Dinesh Bhugra
1Social Psychiatry Section, Institute of Psychiatry, De Crespigny Park, London, SE5 8AF, UK.
Social Psychiatry and Psychiatric Epidemiology
|July 12, 2002
Summary
Socio-environmental factors like unemployment and childhood separation from parents are linked to higher schizophrenia rates in African-Caribbeans in Britain. These factors distinguish them from other ethnic groups and controls, suggesting a need for further research into social influences on schizophrenia.
Area of Science:
- Psychiatry
- Epidemiology
- Sociology
Background:
- Genetic and neurodevelopmental factors alone do not fully explain schizophrenia.
- Reportedly increased schizophrenia incidence among the African-Caribbean population in Britain warrants investigation into socio-environmental influences.
Purpose of the Study:
- To identify socio-environmental factors distinguishing African-Caribbean schizophrenia patients from white British and Asian patients, and from normal population controls.
- To explore potential environmental contributors to the elevated schizophrenia rates in the African-Caribbean community.
Main Methods:
- A matched case-control study conducted in London (1991-1993).
- Inclusion criteria: first-onset psychosis (ages 18-64).
- Data collected using Present State Examination (PSE) and CATEGO for diagnosis; comparisons made on demographic and socio-environmental measures between 100 patients (38 African-Caribbean, 38 white, 24 Asian) and 100 controls.
Main Results:
- Unemployment, living alone, and childhood separation from parents differentiated African-Caribbean cases from controls and other ethnic groups.
- Unemployment was significantly associated with high schizophrenia rates in African-Caribbeans (OR 5.5).
- Early separation from both parents as a minor was a significant distinguishing factor (OR 5.0), not attributable to premorbid schizophrenia or parental psychosis.
Conclusions:
- Unemployment and early parental separation are key socio-environmental factors distinguishing African-Caribbeans with schizophrenia.
- These findings highlight the importance of socio-environmental variables in schizophrenia etiology and research.
- Further focus on social determinants is recommended for schizophrenia research, particularly within minority ethnic groups.