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Original Article • Rev. bras. ortop. 56 (06) • Nov-Dec 2021 • https://doi.org/10.1055/s-0040-1715508   copy

Translation and Cross-cultural Adaptation of the “Thumb Disability Exam - TDX” questionnaire into Brazilian Portuguese* * Work developed at the Department of Orthopedics and Traumatology, Escola Paulista de Medicina, Universidade Federal de, São Paulo, São Paulo, SP, Brazil.

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

Objective

To perform the translation, cultural adaptation and validation of the Thumb Disability Exam (TDX) questionnaire into Brazilian Portuguese.

Method

The questionnaire was translated, with reverse translation. The translations were evaluated and synthesized by a committee, resulting in the THUMB DISABILITY EXAM - BRASIL (TDX-BR). A total of 31 patients diagnosed with rhizarthrosis were selected and answered the questionnaire. Quality parameters were evaluated, such as internal consistency, reproducibility and ceiling and floor effect.

Results

The questionnaires were translated and adapted according to defined protocols. Internal consistency, through the Cronbach α coefficient for the TDX-BR, was 0.962. The reliability of the questionnaire, through intraclass correlation coefficient (ICC )also proved to be quite high, with κ = 0.953 (0.947-0.959). Agreement, measured using the standard error of measurement, remained with standard values < 5%. There was no ceiling and floor effect.

Conclusion

Through specific methodology, we consider TDX-BR as translated and valid for the Portuguese language of Brazil.

Keywords
osteoarthritis; surveys and questionnaires; translation; carpometacarpal joints; reproducibility of tests

Sociedade Brasileira de Ortopedia e Traumatologia Al. Lorena, 427 14º andar, 01424-000 São Paulo - SP - Brasil, Tel.: 55 11 2137-5400 - São Paulo - SP - Brazil
E-mail: rbo@sbot.org.br
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