The Portuguese version of the Clinical Global Impression-Schizophrenia Scale: validation study

The Clinical Global Impression-Schizophrenia Scale was designed to assess severity and treatment response in subjects with schizophrenia involved in naturalistic studies and daily clinical practice. The objective of this study is to validate the Portuguese version of the Clinical Global Impression-S...

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Published in:Revista brasileira de psiquiatria 2007-09, Vol.29 (3), p.246-249
Main Authors: Lima, Maurício Silva de, Soares, Bernardo Garcia de Oliveira, Paoliello, Gilda, Machado Vieira, Rodrigo, Martins, Cláudio Meneghello, Mota Neto, Joaquim Ignácio da, Ferrão, Ygor, Schirmer, Douglas Allen, Volpe, Fernando Madalena
Format: Article
Language:English
Subjects:
Adolescent
Brazil
Cross-Cultural Comparison
Cross-Sectional Studies
Female
Humans
Longitudinal Studies
Male
Psychiatric Status Rating Scales
Psychometrics
Reproducibility of Results
Schizophrenia - diagnosis
Schizophrenia - therapy
Schizophrenic Psychology
Sensitivity and Specificity
Surveys and Questionnaires - standards
Translations
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Summary:The Clinical Global Impression-Schizophrenia Scale was designed to assess severity and treatment response in subjects with schizophrenia involved in naturalistic studies and daily clinical practice. The objective of this study is to validate the Portuguese version of the Clinical Global Impression-Schizophrenia Scale in Brazil by assessing its psychometric properties. Cross-sectional validation study of the Portuguese version of the Clinical Global Impression-Schizophrenia Scale, tested in outpatients and inpatients with schizophrenia (DSM-IV, ICD-10) from 6 centers in Brazil. Concurrent validity and sensitivity to change were assessed by comparison with the Positive and Negative Syndrome Scale, which is considered the gold standard tool to evaluate patients with schizophrenia. Interrater reliability was evaluated by intraclass correlation coefficients (ICC) calculated based on the scoring of two concomitant raters. 70 inpatients and 70 outpatients were evaluated. Total Clinical Global Impression-Schizophrenia Scale and Positive and Negative Syndrome Scale scores were highly correlated (r=0.79; p
ISSN:1516-4446
DOI:10.1590/s1516-44462007000300010