Psychometric properties and scales of the Granada Burnout Questionnaire applied to nurses

Nurses are an occupational group with extremely high levels of burnout. The most accepted definition of the burnout syndrome was proposed by Maslach and Jackson, who characterized it in terms of three dimensions: (i) Emotional Exhaustion; (ii) Depersonalization; (iii) Personal Accomplishment. This definition was the basis for the Granada Burnout Questionnaire (GBQ). The objective of this research was to evaluate the psychometric properties of the GBQ and to elaborate an evaluation scale to measure burnout in nursing professionals in Spain. A total of 1,177 nurses participated in this study and successfully completed the GBQ. Evidence of construct validity was verified by cross-validation and convergent validity, and evidence of criteria validity was checked by concurrent validity. Cronbach's alpha was used to measure internal consistency. The results obtained in our study show satisfactory fit values in the confirmatory factor analysis and in the evidence of convergent and concurrent validity. All of the Cronbach alpha values were greater than .83. This signifies that the GBQ has good psychometric properties that are applicable to nurses. For this purpose a scale of T-scores and centiles was created that permitted the evaluation of burnout in Spanish nursing professionals.