Objective: to develop psychometric assessments of the adapted version of the Competency Evaluation Questionnaire for Brazilian nurses in the hospital context, assessing the reliability of the internal structure of this version.Method: a methodological study was undertaken, in which the sample consisted of 273 nurses from two public hospitals. The scale consists of 27 items, distributed in five competence domains. For the construct validity of the adapted version of the instrument, Cronbach's Alpha was verified, Confirmatory and Exploratory Factor Analysis was applied and Cronbach's Alpha was again calculated for the questionnaire domains, aiming to validate its new structural arrangement.Results: the total Cronbach's Alpha coefficient was 0.923, while the coefficients per domain ranged from 0.397 (Management) to 0.833 (Nursing process. In the factor analysis, a Comparative Fit Index and Tucker-Lewis Index of 0.808 and 0.783 were found, respectively, demonstrating acceptable and near-ideal values. In the exploratory factor analysis, the Kaiser-Meyer-Olkin index was 0.918 and the result of Bartlett's sphericity test was p<0.00. After developing a new structural arrangement of the scale, the internal consistency of the new domains was confirmed and ranged from 0.732 to 0.845, that is, all indices were consistent.
Conclusion:the Brazilian Portuguese version of the Competence Evaluation Questionnaire consisted of 27 items, grouped in the domains they belong to. The criteria of the exploratory factor analysis applied were met, showing an appropriate, valid and reliability instrument. Conclusión: la versión para el portugués brasileño del Cuestionario de Evaluación de Competencias quedó compuesta por 27 ítems agrupados con los dominios al que pertenecen y obedeciendo a los criterios del Análisis Factorial exploratorio realizado, rebelándose como un instrumento adecuado, válido y confiable.
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