Psychometric Properties of the Polish Version of the FACIT-Sp-12: Assessing Spiritual Well-Being Among Patients with Chronic Diseases

Background: Spirituality plays a crucial role in enhancing quality of life. The Functional Assessment of Chronic Illness TherapySpiritual Well-Being (FACIT-Sp) scale is a reliable tool to assess an individual's spiritual well-being, specifically in the context of chronic illness. Although the instrument is widely used worldwide, it has not yet been validated for Polish conditions. The aim of this study was to translate and investigate the reliability and validity of the Polish version of the FACIT-Sp-12 and examine whether it is associated with measures of religiosity and religious practice. Material/Methods: The self-administered FACIT-Sp questionnaire, containing 12 spiritual well-being items, was translated into the Polish language, following the FACIT multilingual translation methodology. A group of 355 patients with chronic diseases were enrolled. Validation analysis was conducted. The reliability of the scale and subscales was evaluated with internal consistency coefficients. Results: A confirmatory factor analysis corroborated a 3-factor model (Meaning, Peace, and Faith) of the FACIT-Sp-12 Polish version, which showed moderate internal consistency. The Cronbach's alpha coefficient was 0.614 for the overall scale, 0.657 for the Meaning subscale, 0.873 for the Peace subscale, and 0.855 for the Faith subscale. The mean score was 29.46 (SD=6.69) for the overall spiritual well-being scale. Total scores of the FACITSp-12 were strongly correlated with the Polish version of the Duke University Religion Index. Conclusions: The psychometric properties of the Polish version of the FACIT-Sp-12 were satisfactory, and the scale can be used in Poland for assessing the spiritual well-being of patients with chronic illness.