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Treated incidence of first-episode psychosis in the catchment area of EPPIC between 1997 and 2000

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Abstract:

Amminger GP, Harris MG, Conus P, Lambert M, Elkins KS, Yuen H-P, McGorry PD. Treated incidence of first-episode psychosis in the catchment area of EPPIC between 1997 and 2000. Objective: 

To identify the treated incidence of psychosis in catchment of the Early Psychosis Prevention and Intervention Centre (EPPIC), Melbourne, Australia. Method: 

Cases were aged 15–29 years with a first episode of a psychotic disorder accepted into EPPIC between 1997 and 2000. Age- and sex-specific incidence rates per 10 000 person-years were calculated in 5 year age bands. Rate ratios were used for age group comparisons. Results: 

The age-specific treated incidence of first-episode psychosis in 15–29-year old individuals was 16.7 per 10 000 person-years in males, and 8.1 per 10 000 person-years in females. The incidence was highest in 20–24-year-old males and in 15–19-year-old females. For both sexes, incidence rates were significantly lower in the 25–29-year age group. Conclusions: 

The incidence of psychosis in the catchment of EPPIC was higher than previously reported, especially in female teenagers. Peak rates in 15–24 year olds suggest a youth model approach to early psychosis may be indicated.

Keywords: age distribution; epidemiology; incidence; psychotic disorders; schizophrenia; sex

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1600-0447.2006.00790.x

Affiliations: 1: ORYGEN Research Centre Encompassing the Early Psychosis Prevention and Intervention Centre (EPPIC): , Department of Psychiatry, University of Melbourne, Melbourne, Australia 2: D├ępartement Universitaire de Psychiatrie Adulte, Clinique de Cery, Switzerland 3: Psychosis Early Detection and Intervention Centre (PEDIC), Centre for Psychosocial Medicine, Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, Hamburg, Germany

Publication date: November 1, 2006

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