Greek Version of the Connor-Davidson Resilience Scale: Psychometric Properties in a Sample of 546 Subjects

Abstract

Background/aim: To evaluate psychometric properties of the Connor and Davidson Resilience Scale (CD-RISC) in a Greek population.

Materials and methods: Internal consistency and test-retest reliability were measured. Global Assessment of Functioning Scale (GAF), World Health Organization Quality of Life (WHOQOL) questionnaire, Perceived Stress Scale (PSS) and General Health Questionnaire (GHQ) were used as measures for convergent reliability. Factors were extracted by using exploratory factor analysis (EFA). A total of 546 subjects (244 healthy individuals and 302 psychiatric patients) were recruited.

Results: The scale showed excellent internal consistency (Cronbach's alpha=0.925), as well as excellent test-retest reliability (intra-class correlation coefficient=0.925). CD-RISC scores were positively correlated to GAF and WHOQOL scores, while being negatively correlated to PSS and GHQ scores, establishing adequate convergent validity. We decided on a model with four factors, in order to form sub-scales that measure different, but related aspects of resilience.

Conclusion: CD-RISC is a reliable and valid measure of resilience and can be used for clinical and research aims in the Greek population.

Keywords: CD-RISC; Greek version; Resilience; psychometric properties; validity.