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A semi-structured clinical interview for psychosis sub-groups (SCIPS): development and psychometric properties

Kinoshita, Yoshihiro, Kingdon, David, Kinoshita, Kuni, Sarafudheen, Sheeba, Umadi, Deepa, Dayson, David, Hansen, Lars, Rathod, Shanaya, Ibbotson, Richard B., Turkington, Douglas and Furukawa, Toshi A. (2011) A semi-structured clinical interview for psychosis sub-groups (SCIPS): development and psychometric properties Social Psychiatry and Psychiatric Epidemiology (doi:10.1007/s00127-011-0357-9). (PMID:21384122).

Record type: Article

Abstract

BACKGROUND: Clinical sub-groups of schizophrenia, namely drug related, traumatic, anxiety and stress sensitivity sub-types, have been proposed for use in research, training and practice. They were developed on the basis of clinical observation but have not yet been used in research or clinical practice to any great extent. AIMS: To develop a semi-structured clinical interview for psychosis sub-groups (SCIPS) and determine the best diagnostic criteria with the highest inter-rater reliability, test-retest reliability and concurrent validity for sub-grouping patients with schizophrenia according to a newly developed classification scheme. METHODS: The SCIPS was developed based upon discussion with the clinician researchers who had developed and were using the sub-groups. Kappa coefficients were calculated between two independent diagnostic assessments with the SCIPS (for inter-rater reliability and test-retest reliability, n = 20) and between the SCIPS diagnosis and the sub-groupings as determined independently with highest achievable validity (for concurrent validity, n = 21) for patients with schizophrenia. These inter-rater reliability and concurrent validity were compared among five different sets of diagnostic criteria to determine which was most reliable and valid. RESULTS: A set of diagnostic criteria with the highest inter-rater reliability and concurrent validity was determined. Kappa coefficients (95% confidence interval) for the inter-rater reliability and concurrent validity were 0.93 (0.66-1.20) and 0.73 (0.47-1.00), respectively, with these diagnostic criteria. CONCLUSIONS: The SCIPS is a promising tool with which to sub-group patients with schizophrenia according to this recently developed classification scheme. The semi-structured interview achieves acceptable inter-rater and test-retest reliability and concurrent validity.

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More information

Published date: 8 March 2011
Keywords: schizophrenia, semi-structured interview, cognitive behavioural therapy, epidemiology, subtypes

Identifiers

Local EPrints ID: 183395
URI: http://eprints.soton.ac.uk/id/eprint/183395
ISSN: 0933-7954
PURE UUID: 93b5b9ba-f657-48f3-8e9f-6317de2aa71d

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Date deposited: 03 May 2011 13:35
Last modified: 18 Jul 2017 11:55

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Contributors

Author: Yoshihiro Kinoshita
Author: David Kingdon
Author: Kuni Kinoshita
Author: Sheeba Sarafudheen
Author: Deepa Umadi
Author: David Dayson
Author: Lars Hansen
Author: Shanaya Rathod
Author: Richard B. Ibbotson
Author: Douglas Turkington
Author: Toshi A. Furukawa

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