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- Title
Portuguese-language version of the COPD Assessment Test: validation for use in Brazil.
- Authors
Ferreira da Silva, Guilherme Pinheiro; Pessoa Morano, Maria Tereza Aguiar; Sampaio Viana, Cyntia Maria; de Araujo Magalhães, Clarissa Bentes; Barros Pereira, Eanes Delgado
- Abstract
Objective: To validate a Portuguese-language version of the COPD assessment test (CAT) for use in Brazil and to assess the reproducibility of this version. Methods: This was multicenter study involving patients with stable COPD at two teaching hospitals in the city of Fortaleza, Brazil. Two independent observers (twice in one day) administered the Portuguese-language version of the CAT to 50 patients with COPD. One of those observers again administered the scale to the same patients one week later. At baseline, the patients were submitted to pulmonary function testing and the six-minute walk test (6MWT), as well as completing the previously validated Portuguese-language versions of the Saint George's Respiratory Questionnaire (SGRQ), modified Medical Research Council (MMRC) dyspnea scale, and hospital anxiety and depression scale (HADS). Results: Inter-rater and intrarater reliability was excellent (intraclass correlation coefficient [ICC] = 0.96; 95% CI: 0.93-0.97; p < 0.001; and ICC = 0.98; 95% CI: 0.96-0.98; p < 0.001, respectively). Bland & Altman plots showed good test-retest reliability. The CAT total score correlated significantly with spirometry results, 6MWT distance, SGRQ scores, MMRC dyspnea scale scores, and HADS-depression scores. Conclusions: The Portuguese-language version of the CAT is a valid, reproducible, and reliable instrument for evaluating patients with COPD in Brazil.
- Subjects
BRAZIL; LANGUAGE &; languages; PORTUGUESE language; OBSTRUCTIVE lung diseases; MEDICAL centers; MEDICAL education; QUESTIONNAIRES
- Publication
Brazilian Journal of Pulmonology / Jornal Brasileiro de Pneumologia, 2013, Vol 39, Issue 4, p402
- ISSN
1806-3713
- Publication type
Article
- DOI
10.1590/S1806-37132013000400002