Validity and reliability testing of the Swedish version of Melbourne Decision Making Questionnaire.

ABSTRACT

BACKGROUND: The Melbourne Decision-Making Questionnaire (MDMQ) is an attempt to capture and measure coping strategies that people use. The instrument had not previously been translated into Swedish. The aim of this study was to evaluate validity and reliability of the Swedish version of the MDMQ. METHOD: A Swedish translation was performed and back-translated. A group of five pilot readers evaluated content validity. The translated questionnaire was tested among 735 patients, healthcare workers, healthcare students and teachers. A parallel analysis (PA), exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were performed. RESULT: An initial EFA with a four-factor solution showed a low concordance with the original 22-item four-factor model with a very low Cronbach's alpha in one of the dimensions. However, a second EFA with a three-factor solution showed a good model fit for the Swedish translation of the Melbourne Decision-Making Questionnaire (MDMQ-S) with a satisfactory Cronbach's alpha. A CFA showed a goodness of fit after deleting six items. CONCLUSION: After testing the MDMQ-S, we found support for validity and reliability of the instrument. We found the 16-item version of MDMQ-S to be satisfactory concerning the subscales vigilance, procrastination and buck-passing. However, we found no support that the hypervigilance dimension could be measured by the MDMQ-S.