• Jornal de pediatria · Jul 2020

    Cross-cultural adaptation and validation of the universal Portuguese-version of the Pediatric Functional Assessment of Chronic Illness Therapy - Fatigue (pedsFACIT-F).

    • Karla P Fernandes, Bruno S Teixeira, Benjamin J Arnold, Tânia M da S Mendonça, Sthela M Oliveira, and SilvaCarlos Henrique M daCHMDUniversidade Federal de Uberlândia, Faculdade de Medicina, Programa de Pós-graduação em Ciências da Saúde, Uberlândia, MG, Brazil; Universidade de São Paulo (USP), Faculdade de Medicina, São Paulo, SP, Brazil; Universidade Fed.
    • Universidade Federal de Uberlândia, Faculdade de Medicina, Programa de Pós-graduação em Ciências da Saúde, Uberlândia, MG, Brazil. Electronic address: fernandeskp@uol.com.br.
    • J Pediatr (Rio J). 2020 Jul 1; 96 (4): 456-463.

    ObjectiveTo cross-culturally adapt and validate the universal Portuguese version of the Pediatric Functional Assessment of Chronic Illness Therapy - Fatigue (pedsFACIT-F).MethodThe universal Portuguese version of the pedsFACIT-F was cross-culturally adapted and validated in 323 children and adolescents aged 8-18 years, 173 healthy individuals, and 150 with chronic diseases (cancer, juvenile idiopathic arthritis, and diabetes). Reliability (internal consistency and test-retest reliability) was assessed. Item response theory model assumptions were evaluated using confirmatory and exploratory factor analyses. Items were calibrated using a graded response model. Differential item functioning was assessed regarding age, gender, and clinical condition (healthy vs. chronic diseases).ResultsNo major cultural adaptations were needed. Internal consistency (Cronbach's alpha=0.84) and test-retest reliability (intraclass correlation coefficient=0.92) were good. CFA (CFI=0.92, TLI=0.90, RMSEA=0.097) and CFE analysis confirmed sufficient unidimensionality. The data also fit the GRM and demonstrated good coverage of the fatigue construct (threshold parameters range: -1.42 to 4.56). No items demonstrated significant differential item functioning.ConclusionThe universal Portuguese version of the pedsFACIT-F provides a reliable, precise, and valid measure after being assessed by robust psychometric properties. Stability of the measurement properties of the pedsFACIT-F scale allows its use to assess fatigue in clinical research in Portuguese-speaking children and adolescents.Copyright © 2019 Sociedade Brasileira de Pediatria. Published by Elsevier Editora Ltda. All rights reserved.

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