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The improved Clinical Global Impression Scale (iCGI): development and validation in depression

BACKGROUND: The Clinical Global Impression scale (CGI) is frequently used in medical care and clinical research because of its face validity and practicability. This study proposes to improve the reliability of the Clinical Global Impression (CGI) scale in depressive disorders by the use of a semi-s...

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Autores principales: Kadouri, Alane, Corruble, Emmanuelle, Falissard, Bruno
Formato: Texto
Lenguaje:English
Publicado: BioMed Central 2007
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1802073/
https://www.ncbi.nlm.nih.gov/pubmed/17284321
http://dx.doi.org/10.1186/1471-244X-7-7
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author Kadouri, Alane
Corruble, Emmanuelle
Falissard, Bruno
author_facet Kadouri, Alane
Corruble, Emmanuelle
Falissard, Bruno
author_sort Kadouri, Alane
collection PubMed
description BACKGROUND: The Clinical Global Impression scale (CGI) is frequently used in medical care and clinical research because of its face validity and practicability. This study proposes to improve the reliability of the Clinical Global Impression (CGI) scale in depressive disorders by the use of a semi-standardized interview, a new response format, and a Delphi procedure. METHODS: Thirty patients hospitalised for a major depressive episode were filmed at T1 (first week in hospital) and at T2 (2 weeks later) during a 5' specific interview. The Hamilton Depressive Rating Scale and the Symptom Check List were also rated. Eleven psychiatrists rated these videos using either the usual CGI response format or an improved response format, with or without a Delphi procedure. RESULTS: The new response format slightly improved (but not significantly) the interrater agreement, the Delphi procedure did not. The best results were obtained when ratings by 4 independent raters were averaged. In this situation, intraclass correlation coefficients were about 0.9. CONCLUSION: The Clinical Global Impression is a useful approach in psychiatry since it apprehends patients in their entirety. This study shows that it is possible to quantify such impressions with a high level of interrater agreement.
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spelling pubmed-18020732007-02-21 The improved Clinical Global Impression Scale (iCGI): development and validation in depression Kadouri, Alane Corruble, Emmanuelle Falissard, Bruno BMC Psychiatry Research Article BACKGROUND: The Clinical Global Impression scale (CGI) is frequently used in medical care and clinical research because of its face validity and practicability. This study proposes to improve the reliability of the Clinical Global Impression (CGI) scale in depressive disorders by the use of a semi-standardized interview, a new response format, and a Delphi procedure. METHODS: Thirty patients hospitalised for a major depressive episode were filmed at T1 (first week in hospital) and at T2 (2 weeks later) during a 5' specific interview. The Hamilton Depressive Rating Scale and the Symptom Check List were also rated. Eleven psychiatrists rated these videos using either the usual CGI response format or an improved response format, with or without a Delphi procedure. RESULTS: The new response format slightly improved (but not significantly) the interrater agreement, the Delphi procedure did not. The best results were obtained when ratings by 4 independent raters were averaged. In this situation, intraclass correlation coefficients were about 0.9. CONCLUSION: The Clinical Global Impression is a useful approach in psychiatry since it apprehends patients in their entirety. This study shows that it is possible to quantify such impressions with a high level of interrater agreement. BioMed Central 2007-02-06 /pmc/articles/PMC1802073/ /pubmed/17284321 http://dx.doi.org/10.1186/1471-244X-7-7 Text en Copyright © 2007 Kadouri et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( (http://creativecommons.org/licenses/by/2.0) ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Kadouri, Alane
Corruble, Emmanuelle
Falissard, Bruno
The improved Clinical Global Impression Scale (iCGI): development and validation in depression
title The improved Clinical Global Impression Scale (iCGI): development and validation in depression
title_full The improved Clinical Global Impression Scale (iCGI): development and validation in depression
title_fullStr The improved Clinical Global Impression Scale (iCGI): development and validation in depression
title_full_unstemmed The improved Clinical Global Impression Scale (iCGI): development and validation in depression
title_short The improved Clinical Global Impression Scale (iCGI): development and validation in depression
title_sort improved clinical global impression scale (icgi): development and validation in depression
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1802073/
https://www.ncbi.nlm.nih.gov/pubmed/17284321
http://dx.doi.org/10.1186/1471-244X-7-7
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