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Brief rating instrument for assessment of negative symptoms: derived from the comprehensive psychopathological rating scale (CPRS)

Brief rating instrument for assessment of negative symptoms: derived from the comprehensive psychopathological rating scale (CPRS)
Brief rating instrument for assessment of negative symptoms: derived from the comprehensive psychopathological rating scale (CPRS)
Introduction: the aim of the study was to investigate whether a scale based on 10 selected items from the Comprehensive Psychopathological Rating Scale (CPRS) correlated with the widely used Schedule for the Assessment of Negative Symptoms (SANS) in measuring symptom severity and change in a group of patients suffering from chronic schizophrenia.
Method: ninety patients with a diagnosis of schizophrenia were recruited from five British clinical services. The patients were all resistant to conventional antipsychotic medication. The patients were divided into two groups that received Befriending (BF) or Cognitive-behavioural therapy (CBT). The patients were scored on the CPRS and the SANS three times, before and after the therapy and again at 9 months follow-up. Tests for normality or skewness confirmed a normal distribution and therefore Pearson's correlation coefficient was used.
Results: the initial assessment showed a correlation of 0.56, the second had a correlation of 0.57, whilst the last follow-up correlation had increased to 0.87.
Conclusion: the correlations at all three assessment points were acceptable. The new rating scale is (a) shorter than the SANS; (b) a valid measure of negative symptom severity; (c) sensitive to change; and (d) allows negative symptom scores to be abstracted from CPRS ratings.
negative symptoms, schizophrenia, rating scale
113-116
Hansen, Lars
2f2de59f-0d61-4283-b0e5-7240ec9c6af7
Turkington, Douglas
3e0aca69-c932-4fb6-9145-6e19c7310700
Kingdon, David
859c861f-499a-40d3-8b15-0d3f7155cb07
Smith, Peter
961a01a3-bf4c-43ca-9599-5be4fd5d3940
Hansen, Lars
2f2de59f-0d61-4283-b0e5-7240ec9c6af7
Turkington, Douglas
3e0aca69-c932-4fb6-9145-6e19c7310700
Kingdon, David
859c861f-499a-40d3-8b15-0d3f7155cb07
Smith, Peter
961a01a3-bf4c-43ca-9599-5be4fd5d3940

Hansen, Lars, Turkington, Douglas, Kingdon, David and Smith, Peter (2003) Brief rating instrument for assessment of negative symptoms: derived from the comprehensive psychopathological rating scale (CPRS). International Journal of Psychiatry in Clinical Practice, 7 (2), 113-116. (doi:10.1080/13651500310000681).

Record type: Article

Abstract

Introduction: the aim of the study was to investigate whether a scale based on 10 selected items from the Comprehensive Psychopathological Rating Scale (CPRS) correlated with the widely used Schedule for the Assessment of Negative Symptoms (SANS) in measuring symptom severity and change in a group of patients suffering from chronic schizophrenia.
Method: ninety patients with a diagnosis of schizophrenia were recruited from five British clinical services. The patients were all resistant to conventional antipsychotic medication. The patients were divided into two groups that received Befriending (BF) or Cognitive-behavioural therapy (CBT). The patients were scored on the CPRS and the SANS three times, before and after the therapy and again at 9 months follow-up. Tests for normality or skewness confirmed a normal distribution and therefore Pearson's correlation coefficient was used.
Results: the initial assessment showed a correlation of 0.56, the second had a correlation of 0.57, whilst the last follow-up correlation had increased to 0.87.
Conclusion: the correlations at all three assessment points were acceptable. The new rating scale is (a) shorter than the SANS; (b) a valid measure of negative symptom severity; (c) sensitive to change; and (d) allows negative symptom scores to be abstracted from CPRS ratings.

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More information

Published date: 2003
Keywords: negative symptoms, schizophrenia, rating scale

Identifiers

Local EPrints ID: 34760
URI: http://eprints.soton.ac.uk/id/eprint/34760
PURE UUID: 3a84605c-3263-439f-b05b-cd5b9cb4b9eb
ORCID for Peter Smith: ORCID iD orcid.org/0000-0003-4423-5410

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Date deposited: 17 May 2006
Last modified: 09 Jan 2022 02:41

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Contributors

Author: Lars Hansen
Author: Douglas Turkington
Author: David Kingdon
Author: Peter Smith ORCID iD

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