RESUMEN
INTRODUCTION: The majority of patients with advanced neoplasms have religious/spiritual needs, and for most of them religion and/or spirituality is important. The psychology of religion and spirituality is one the forms of support offered to patients with advanced cancer. R/S are factors which impact health-related quality of life (HRQoL). The aim of this paper was to assess the influence of R/S on the HRQoL of patients diagnosed with MM. MATERIALS AND METHODS: The patients filled out anonymous questionnaires about R/S and the HRQoL scale. The clinical data were collected from medical records. RESULTS: The study sample consisted of 83 patients with MM (51.8% women), with a mean age of 64.9 years. The leading denomination among the respondents was Catholic (N = 83, 100%): 36% described themselves as deep believers (N = 30), 53% as believers (N = 44), and 11% as nonpracticing believers (N = 9). Most patients were receiving ongoing treatment (59.8%), while 40.2% were in remission from the disease. Patients in remission declared a significantly higher interest in R/S issues than patients in active treatment and had a higher rate of intrapsychic R/S struggles dominated by anxiety and guilt. A moderate negative correlation between interest in R/S issues and unfavorable assessment of physical functioning and role functioning was observed. Anger towards God positively correlated with a negative assessment of emotional functioning. CONCLUSIONS: The findings highlight the importance of R/S for the HRQoL of MM patients and show that their QoL depends on the types of R/S coping used.