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- Translation, cross-cultural adaptation, and validation of measurement instruments :Publication . J. M. Cruchinho, Paulo; López-Franco, María-Dolores; Capelas, ML; Almeida, Sofia; Bennett, Phillippa May; Miranda da Silva, Marcelle; Teixeira, Gisela; Nunes, Elisabete; Lucas, P.; Mendes Gaspar, Maria FilomenaCross-cultural validation of self-reported measurement instruments for research is a long and complex process, which involves specific risks of bias that could affect the research process and results. Furthermore, it requires researchers to have a wide range of technical knowledge about the translation, adaptation and pre-test aspects, their purposes and options, about the different psychometric properties, and the required evidence for their assessment and knowledge about the quantitative data processing and analysis using statistical software. This article aimed: 1) identify all guidelines and recommendations for translation, cross-cultural adaptation, and validation within the healthcare sciences; 2) describe the methodological approaches established in these guidelines for conducting translation, adaptation, and cross-cultural validation; and 3) provide a practical guideline featuring various methodological options for novice researchers involved in translating, adapting, and validating measurement instruments. Forty-two guidelines on translation, adaptation, or cross-cultural validation of measurement instruments were obtained from “CINAHL with Full Text” (via EBSCO) and “MEDLINE with Full Text”. A content analysis was conducted to identify the similarities and differences in the methodological approaches recommended. Bases on these similarities and differences, we proposed an eight-step guideline that includes: a) forward translation; 2) synthesis of translations; 3) back translation; 4) harmonization; 5) pre-testing; 6) field testing; 7) psychometric validation, and 8) analysis of psychometric properties. It is a practical guideline because it provides extensive and comprehensive information on the methodological approaches available to researchers. This is the first methodological literature review carried out in the healthcare sciences regarding the methodological approaches recommended by existing guidelines.
- Propriedades psicométricas do Questionário Geral de Saúde 28 itens em enfermeiros:Publication . Seabra, Paulo; Capelas, ML; Lopes, Joaquim Manuel de Oliveira; Calado, Mariana; Pessoa, EzequielEnquadramento: A avaliação das propriedades psicométricas dos instrumentos de medida, quando aplicados em diferentes populações, é essencial. Objetivo: Analisar as propriedades psicométricas do Questionário de Saúde Geral 28 itens (GHQ28) em enfermeiros. Metodologia: Estudo metodológico de validação de instrumentos de medida. Análise das propriedades psicométricas, análise fatorial exploratória (AFE) pelo método dos componentes principais, e curva Receiver Operating Characteristic (ROC), com uma amostra não probabilística de 1.264 enfermeiros. Resultados: A AFE propõe a manutenção de 4 fatores e eliminação de 4 itens em 3 dimensões (item 3,16, 21,26). A variância explicada pelos 4 fatores foi 61,5% e o alfa de Cronbach 0,93. Os resultados de saúde geral não sofreram variabilidade significativa após se retirarem os 4 itens. A curva ROC, comparando a versão 24 itens com a de 28, revelou uma área sob a curva (AUC) de 0,996 (p < 0,001) e ponto de corte 20,5, com uma sensibilidade de 96,3% e especificidade de 98,4%. Conclusão: A reavaliação das propriedades psicométricas do GHQ28 em enfermeiros, sugere redução para 24 itens