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Frenchay dysarthria assessment (FDA-2) in Parkinson’s disease: cross-cultural adaptation and psychometric properties of the European Portuguese version

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Abstract

Hypokinetic dysarthria is a common symptom in those with Parkinson’s disease (PD); there is currently no standardized or validated tool for assessing speech in this population. To translate into European Portuguese (EP) the FDA-2 and perform a cultural adaptation followed by an evaluation of its psychometric properties in PD in a sample of people with PD in different stages of disease progression. Translation, back-translation, experts’ analysis, pre-test and final version test were performed. The EP version of the FDA-2 was administered to 80 people with PD (PwP) with dysarthria, feasibility and acceptability, reliability (internal consistency and inter-rater reliability) and validity (face and convergent) were measured. Overall, the EP-FDA-2 proved to be similar to the original demonstrating the same conceptual meanings, semantics, idiomatic and score equivalences. It has good feasibility (missing data <5 %), acceptability (ceiling and floor effects <15 %), a high reliability of the total score (0.94), an excellent inter-rater agreement for the total score (0.96) and moderate to large construct validity for 81 % of its items. It is well correlated with the gold standard for disease severity assessment in PD, the MDS-UPDRS. The EP-FDA-2 has shown the salient features of a valid tool that can be used by speech and language therapists in the assessment of dysarthria in PD in clinical practice as in the research field.

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Authors and Affiliations

  1. Clinical Pharmacological Unit, Instituto de Medicina Molecular, Faculty of Medicine, University of Lisbon, Lisbon, Portugal

    Rita Cardoso, Isabel Guimarães, Helena Santos, Josefa Domingos, Daisy de Abreu, Nilza Gonçalves & Joaquim Ferreira

  2. Campus Neurológico Sénior, Torres Vedras, Portugal

    Rita Cardoso, Helena Santos, Rita Loureiro, Josefa Domingos & Joaquim Ferreira

  3. Department of Speech Therapy, Escola superior de Saúde de Alcoitão, Estoril, Portugal

    Isabel Guimarães

  4. Aix-Marseille Université/CNRS, Laboratoire Parole et Language (LPL), Aix-en-Provence, France

    Serge Pinto

Authors
  1. Rita Cardoso
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  2. Isabel Guimarães
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  3. Helena Santos
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  4. Rita Loureiro
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  5. Josefa Domingos
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  6. Daisy de Abreu
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  7. Nilza Gonçalves
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  8. Serge Pinto
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  9. Joaquim Ferreira
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Correspondence to Joaquim Ferreira.

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All human and animal studies have been approved by the appropriate ethics committee and have therefor been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.

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Cardoso, R., Guimarães, I., Santos, H. et al. Frenchay dysarthria assessment (FDA-2) in Parkinson’s disease: cross-cultural adaptation and psychometric properties of the European Portuguese version. J Neurol 264, 21–31 (2017). https://doi.org/10.1007/s00415-016-8298-6

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  • DOI: https://doi.org/10.1007/s00415-016-8298-6

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