A semi-structured clinical interview for psychosis sub-groups (SCIPS): development and psychometric properties
- 511 Downloads
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.
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.
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.
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.
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.
KeywordsSchizophrenia Semi-structured interview Cognitive behavioural therapy Epidemiology Subtypes
This study is a part of YK’s PhD thesis. There are no conflicts of interests with respect to this manuscript. We wish to thank Ms. Penny Bartlett (Royal South Hants Hospital) for her substantial contribution to this study. This work was supported by Overseas Research Students Awards Scheme, the Glaxo SmithKline international scholarship and the Nitto Foundation.
- 8.Bleuler E (1911) Dementia praecox or the group of schizophrenias. International Universities Press, New YorkGoogle Scholar
- 10.Chadwick PD, Birchwood MJ, Trower P (1996) Cognitive therapy for delusions, voices and paranoia. Wiley, OxfordGoogle Scholar
- 16.First MB, Gibbon M (2004) The structured clinical interview for DSM-IV axis I disorders (SCID-I) and the structured clinical interview for DSM-IV axis II disorders (SCID-II). In: Hilsenroth MJ, Segal DL (eds) Comprehensive handbook of psychological assessment, Vol. 2: personality assessment. Wiley, New Jersey, pp 134–143Google Scholar
- 17.Healy D (2002) The creation of psychopharmacology. Harvard University Press, MassachusettsGoogle Scholar
- 19.Janssen I, Krabbendam L, Bak M, Hanssen M, Vollebergh W, de GR, van Os J (2004) Childhood abuse as a risk factor for psychotic experiences. Acta Psychiatrica Scandinavica 109:38–45Google Scholar
- 23.Kingdon D, Turkington D (1998) Outcome and innovation in psychological treatment of schizophrenia. In: Wykes T, Tarrier N, Lewis S (eds) Cognitive behaviour therapy of schizophrenia. Wiley, New Jersey, pp 59–79Google Scholar
- 24.Kingdon D, Turkington D (2002) A casebook guide to cognitive behaviour therapy: practice, training and implementation. Wiley, ChichesterGoogle Scholar
- 25.Kingdon DG, Turkington D (2005) Cognitive therapy of schizophrenia. Guilford Press, New YorkGoogle Scholar
- 26.Kinoshita Y (2009) Development and psychometric properties of a semi-structured clinical interview for psychosis sub-groups (SCIPS). University of Southampton, SouthamptonGoogle Scholar
- 27.Kraepelin E (1919) Dementia praecox and paraphrenia. Thoemmes Press, BristolGoogle Scholar
- 31.Morgan C, bdul-Al R, Lappin JM, Jones P, Fearon P, Leese M, Croudace T, Morgan K, Dazzan P, Craig T, Leff J, Murray R, AESOP Study Group (2006) Clinical and social determinants of duration of untreated psychosis in the AESOP first-episode psychosis study. Br J Psychiatry 189:446–52, 2006 Nov.:446–452Google Scholar
- 34.Richardson SA, Dohrenwend BS, Klein D (1965) Interviewing its forms and functions. Basic Books, New YorkGoogle Scholar
- 35.Shevlin M, Murphy J, Read J, Mallett J, Adamson G, Houston JE (2010) Childhood adversity and hallucinations: a community-based study using the National Comorbidity Survey Replication. Soc Psychiatry Psychiatric Epidemiol (in press)Google Scholar
- 36.Tsuang MT, Woolson RF, Simpson JC (1980) The iowa structured psychiatric interview. Rationale, reliability, and validity. Acta Psychiatrica Scandinavica, Supplementum 283:96pGoogle Scholar
- 37.World Health Organization (1992) The ICD-10 classification of mental and behavioural disorders; clinical descriotions and diagnostic guidelines. World Health Organization, GenevaGoogle Scholar
- 38.Wright JH, Turkington D, Kingdon DG, Basco MR (2008) Cognitive-behavior therapy for severe mental illness: an illustrated guide. American Psychiatric Publishing, Washington DCGoogle Scholar