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Incidence of first-contact psychosis in Sao Paulo, Brazil

, : Incidence of first-contact psychosis in Sao Paulo, Brazil. British Journal of Psychiatry 191(Suppl. 51): S102-S106

Background Little is known about the incidence of first-episode psychosis in urban centres of low- or middle-income countries.Aims To estimate the incidence of psychosis in Sao Paulo, a large metropolis of Brazil.Method Prospective survey of first-episode psychosis among residents aged 18-64 years resident in a defined area of Sao Paulo, over a 30-month period (July 2002- December 2004). Assessments were carried out with the SCID-I, and diagnoses given according to DSM-IV criteria. Population at risk was drawn from the 2000 Census data.Results There were 367 first-episode cases identified (51% women), and almost 40% fulfilled criteria for schizophrenia or schizophreniform disorder. The incidence rate for any psychosis was 15.8/100 000 person-years at risk (95% CI 14.3-17.6). Incidence of non-affective psychoses was higher among younger males.Conclusions Incidence of psychosis in Sao Paulo was lower than expected for a large metropolis.Declaration of interest None. Funding detailed in Acknowledgements.


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