The inter-rater and test-retest reliabilities of prodromal symptoms in first-episode psychosis

Henry J. Jackson, Patrick D. McGorry, Jenepher Dakis, Susan Harrigan, Lisa Henry, Cathy Mihalopoulos

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Objective: As part of the DSM-IV field trial for psychotic disorders, the authors endeavoured to determine the reliability of the DSM-IV prodromal features for schizophrenia in a first-episode sample. Method: Fifty first-episode psychotic patients were assessed using a semi-structured instrument to determine the presence/absence of nine prodromal symptoms. Inter-rater reliability data were calculated for 25 of the patients, and test-retest data were calculated for the remaining 25 patients. Results: Levels of reliability were poor. Conclusions: The results lend some support to American Psychiatric Association and World Health Organization decisions to omit specific criteria for prodromal features from their respective nosologies.

Original languageEnglish
Pages (from-to)498-504
Number of pages7
JournalAustralian and New Zealand Journal of Psychiatry
Issue number4
Publication statusPublished - Aug 1996
Externally publishedYes

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