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Validation study of a Portuguese version of the Hospital Anxiety and Depression Scale

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The study aims to develop and assess metric proprieties of the Portuguese version of the Hospital Anxiety and Depression Scale. A sequential sample includes 1322 participants diagnosed with cancer, stroke, epilepsy, coronary heart disease, diabetes, myotonic dystrophy, obstructive sleep apnoea, depression and a non-disease group, which completed the HADS. The first step includes translation, retroversion, inspection for lexical equivalence and content validity, and cognitive debriefing. Then we reproduce oblique exploratory factor analysis and use confirmatory factor analysis. We explore the sensibility of the questionnaire. The validation process of the Portuguese HADS version shows metric properties similar to those in international studies, suggesting that it measures the same constructs, in the same way, as the original HADS form.
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Keywords: Anxiety and depression; metric properties; scale adaptation

Document Type: Research Article

Affiliations: 1: Faculdade de Psicologia e de Ciências da Educação, Universidade do Porto, 2: Universidade Fernando Pessoa, Porto 3: Escola Superior de Enfermagem S. João, Porto, Portugal

Publication date: March 1, 2007

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