Cross-cultural validation of the Chalder Fatigue Questionnaire in Brazilian primary care

dc.contributor.authorCho, Hyong Jin
dc.contributor.authorCosta, Erico
dc.contributor.authorMenezes, Paulo Rossi
dc.contributor.authorChalder, Trudie
dc.contributor.authorBhugra, Dinesh
dc.contributor.authorWessely, Simon
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.contributor.institutionKings Coll London
dc.contributor.institutionFundacao Oswaldo Cruz
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.description.abstractObjective: the Chalder Fatigue Questionnaire (CFQ) is an instrument used to measure physical and mental fatigue. We translated and adapted the questionnaire and tested its reliability and validity in a Brazilian primary care setting. Method: A pilot study with 204 consecutive primary care attenders in São Paulo, Brazil, verified the internal consistency and factor structure of the questionnaire. After some modifications through a rigorous translation, back-translation, and cross-cultural adaptation procedure, a validation study was conducted with 304 attenders, who also completed the fatigue section of the Revised Clinical Interview Schedule (CIS-R). Results: the internal consistency of the Brazilian CFQ slightly improved from the pilot to the validation study: Cronbach's alpha from .86 to .88. the two-factor structure (physical and mental fatigue) also improved. According to the receiver operating curve analysis with the fatigue section of the CIS-R as the standard criterion, 3/4 was chosen as the cutoff for Brazilian primary care (sensitivity 69.1% and specificity 79.4%). Conclusion: the Brazilian CFQ had good reliability and validity. the cutoff was determined as 3/4 and the factor structure of the English CFQ was closely reproduced. (c) 2007 Elsevier Inc. All rights reserved.en
dc.description.affiliationUniversidade Federal de São Paulo, Dept Psychiat, BR-04023900 São Paulo, Brazil
dc.description.affiliationKings Coll London, Inst Psychiat, London WC2R 2LS, England
dc.description.affiliationFundacao Oswaldo Cruz, Renee Rachou Res Inst, Belo Horizonte, MG, Brazil
dc.description.affiliationUniv São Paulo, Sch Med, Dept Prevent Med, São Paulo, Brazil
dc.description.affiliationUniv São Paulo, Univ Hosp, Epidemiol Sect, São Paulo, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Dept Psychiat, BR-04023900 São Paulo, Brazil
dc.description.sourceWeb of Science
dc.identifier.citationJournal of Psychosomatic Research. Oxford: Pergamon-Elsevier B.V., v. 62, n. 3, p. 301-304, 2007.
dc.publisherElsevier B.V.
dc.relation.ispartofJournal of Psychosomatic Research
dc.rightsAcesso restrito
dc.subjectprimary careen
dc.titleCross-cultural validation of the Chalder Fatigue Questionnaire in Brazilian primary careen