The purpose of this research was to analyze the psychometric properties of Anderson, Funnell, Fitzgerald y Marrero´s Diabetes Empowerment Scale, Long Form-Spanish (DES-LF-S), in 528 diabetic adults. The confirmatory factor analysis stated that the model that best adjust to the data has a tridimensional structure and replicates the structure of the scale in its original version. Items of the scale explained 63.79% of variance. The scale showed satisfactory levels of internal consistency, obtaining a Cronbach´s Alpha of .96; additionally percentiles for the interpretation of individual results were obtained. These findings support the use of DES-LF-S to evaluate self-efficacy related to diabetes in adults.
