Psychometric Properties of the Greek Version of Demoralization Scale-II (DS-II) in Patients with Cancer.

Introduction: The concept of demoralization is used to describe situations of existential distress and self-perceived inability to effectively deal with stressors. The Demoralization Scale-II (DS-II) is a short and modified version of the original DS that measures the level of demoralization in patients. The purpose of this study is to evaluate the psychometric properties of the Greek version of the Greek Demoralisation Scale-II (DS-II GR) in the population of patients with cancer. Methods: The main tool used in this cross-sectional study is the DS-II GR translated and evaluated for its psychometric properties in a sample of 150 Greek patients with cancer. Exploratory factor analysis (EFA), confirmatory factor analysis (CFA), convergent validity, known groups' validity, cut-off points, internal consistency reliability and test-retest reliability were done. Results: According to the CFA, a two-factor model emerged with a different conceptual content and grouping than the original. The correlation coefficients between DS-II GR and Hospital Anxiety and Depression Scale-Greek (HADS-GR) The internal consistency of DS-II GR for factor 1, factor 2, and total score were measured with Cronbach's alpha and calculated to be 0.906, 0.810, and 0.913. Conclusion: The Greek version of the demoralization scale is reliable and valid for assessing demoralization in Greek patients with cancer.