Abstract
OBJECTIVE: to adapt the Simulation Effectiveness Tool - Modified (SET-M) to Portuguese and to verify validity and reliability indexes. METHOD: methodological study using ISPOR, Confirmatory Factor Analysis, correlation between the adapted instrument/Simulation Design Scale - Student Version/Individual Practice Assessment and reliability (test-retest and internal consistency indexes). Convenience sample with a total of 435 Nursing undergraduate and graduate students. RESULTS: Simulation Effectiveness Tool - Modified Brazilian Version obtained an average score between 2.36 to 2.94. The Confirmatory Factor Analysis had a factor load > 0.30 for 17 of the 19 items. Cronbach's alpha ranged between 0.729 and 0.874. McDonald's omega was 0.782. There was no correlation between Simulation Effectiveness Tool - Modified Brazilian Version and the Simulation Design or Individual Practical Assessment. There was a positive correlation between the Simulation Effectiveness Tool - Modified Brazilian Version and the participants' age. The scores of the volunteers in the simulations were significantly higher than those of the observers in three domains. CONCLUSION: the SET-M Brazilian Version, maintaining the 19 items and four domains of the original scale, was made available for use in Brazil to evaluate the effectiveness of the simulation, recommending studies with different samples.