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Gender, age, ethnicity and area of residence influence incidence of psychotic disorders

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Q Does gender, age, ethnicity, and/or place of residence affect the incidence of schizophrenia and other psychotic disorders?

METHODS

Embedded ImageDesign:

Longitudinal study.

Embedded ImageFollow up period:

Two years (Nottingham and London), nine months (Bristol).

Embedded ImageSetting:

Three study centres in South East London, Nottingham, and Bristol, UK; case ascertainment 1997–99.

Embedded ImagePeople:

1 030 266 people (1 631 441 person years) aged 16–64 years resident in the study areas (UK 2001 census data).

Embedded ImageRisk factors:

Gender, age, ethnicity, area of residence. Ethnicity was determined by self-report, place of birth, and parents’ place of birth.

Embedded ImageOutcomes:

Incidence of schizophrenia or other psychoses (DSM-IV). All people making contact with psychiatric services for the first time who had symptoms or clinical suspicion of psychosis and no organic medical cause were screened using the World …

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