• Rev Assoc Med Bras (1992) · Nov 2021

    Self-Estimated functional inability because of pain questionnaire for workers: a reliability and construct validity study.

    • Josane Soares Pinto Melo, Almir Vieira Dibai Filho, Cassiane Mendes Oliveira, Cezar Augusto Brito Pinheiro, Daniel Santos Rocha, Gabriela Nascimento de Santana, GomesCid André Fidelis de PaulaCAFPhttp://orcid.org/0000-0001-6627-7537Universidade Nove de Julho, Postgraduate Program in Rehabilitation Sciences - São Paulo (SP), Brazil., and Daniela Bassi-Dibai.
    • Universidade Ceuma, Postgraduate Program in Programs Management and Health Services - São Luís (MA), Brazil.
    • Rev Assoc Med Bras (1992). 2021 Nov 1; 67 (11): 1622-1626.

    ObjectiveThe objective of this study was to investigate the reliability and construct validity of the Self-Estimated Functional Inability because of Pain questionnaire for workers in a sample of Brazilian workers with musculoskeletal pain.MethodsThis is a questionnaire validation study. Workers with musculoskeletal pain were included. Besides the Self-Estimated Functional Inability because of Pain questionnaire for workers, we used the following instruments to perform construct validity: the Work Ability Index and the Numerical Pain Rating Scale. A subsample answered the Self-Estimated Functional Inability because of Pain questionnaire for workers in two moments to calculate reliability by means of the intraclass correlation coefficient and internal consistency by means of the Cronbach's alpha.ResultsA total of 190 Brazilian workers were included. Regarding the construct validity, we observed a correlation with magnitude above 0.50 between the Self-Estimated Functional Inability because of Pain questionnaire for workers and the Numerical Pain Rating Scale, given that these two instruments have similarity in the construct, and correlations above 0.30 between the Self-Estimated Functional Inability because of Pain questionnaire for workers and the domains 2, 3, and 4 of the Work Ability Index. Regarding reliability, we observed adequate reliability (intraclass correlation coefficient=0.864) and internal consistency (Cronbach's alpha=0.807).ConclusionThe Self-Estimated Functional Inability because of Pain questionnaire for workers is a reliable and valid instrument to be used in Brazilian workers with musculoskeletal pain.

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