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Background: There has been much debate about changes in the incidence of schizophrenia.Aims: To identify any changes in incidence of schizophrenia in Camberwell, south-east London, between 1965 and 1997.Method: Research Diagnostic Criteria and DSM-III-R diagnoses were generated for all first contacts by the OPCRIT computer program, and incidence rates of schizophrenia in seven time periods were measured. Indirect standardisation and Poisson models were used to measure the effect of time period and to examine interactions with age and gender.Results: There was a continuous and statistically significant increase in the incidence of schizophrenia, which was greatest in people under 35 years of age and was not gender-specific.Conclusions: The incidence of schizophrenia has doubled in south-east London over the past three decades. [ABSTRACT FROM AUTHOR]

Background: Being born or living in urban areas is associated with high rates of schizophrenia. However, few studies have compared the incidence in urban/rural areas using the same methodology.Aims: To compare service-based incidence rates for schizophrenia in rural Dumfries and Galloway in south-west Scotland with urban Camberwell in south-east London.Method: Using Research Diagnostic Criteria diagnoses from the OPCRIT computer algorithm, we compared the incidence of schizophrenia over 12 years (1979-1984 and 1992-1997) using indirect standardisation techniques and Poisson regression modelling.Results: The incidence was 61% higher in urban Camberwell than in rural Dumfries and Galloway (standardised incidence ratio (SIR)=1.61; 95% CI=1.42-1.81). There was no difference in incidence when we compared the White population in Camberwell with Dumfries and Galloway (SIR=1.12; 95% CI=0.86-1.43).Conclusions: The incidence of schizophrenia in urban Camberwell was higher than that in rural Dumfries and Galloway; the high incidence of non-Whites in Camberwell largely explains the urban/rural difference. [ABSTRACT FROM AUTHOR]

Over a 6-month period, this study compared referral rates amongst different ethnic groups to an inner city deliberate self-harm (DSH) team, using native British (in the remainder of this paper referred to as whites) as standard and age-standardized referral ratios as the measure of effect. indian female rates were 2.6 times those of whites. Amongst United Kingdom born Indian females, (crude) rates were 7.8 times those of United Kingdom born white females. Unemployment was associated with a 9 times increased referral rate amongst whites and a 3 times increased referral rate amongst ethnic minorities, suggesting that ethnicity modifies the association between unemployment and DSH rates. This study suggested that ethnic minority and white DSH differ in important respects; DSH teams serving multicultural communities may need to develop special expertise to meet the needs of minority ethnic groups. [ABSTRACT FROM AUTHOR]

Abstract Objective: To determine whether the incidence of schizophrenia among people from non-white ethnic minorities is greater in neighbourhoods where they constitute a smaller proportion of the total population. Design: Ecological design including retrospective study of case records to calculate the incidence of schizophrenia in the ethnic minority population across electoral wards and multi-level analysis to examine interaction between individuals and environment. Setting: 15 electoral wards in Camberwell, South London. Participants: All people aged 16 years and over who had contact with psychiatric services during 1988-97. Main outcome measure: Incidence rates of schizophrenia according to Research Diagnostic Criteria. Results: The incidence of schizophrenia in non-white ethnic minorities increased significantly as the proportion of such minorities in the local population fell. The incidence rate ratio varied in a dose-response fashion from 2.38 (95% confidence interval 1.49 to 3.79) in the third of wards where non-white ethnic minorities formed the largest proportion (28-57%) of the local population to 4.4 (2.49 to 7.75) in the third of wards where they formed the smallest proportion (8-22%). Conclusion: The incidence of schizophrenia in non-white ethnic minorities in London is greater when they comprise a smaller proportion of the local population. [ABSTRACT FROM AUTHOR]