Association between religiosity and happiness in patients with chronic kidney disease on hemodialysis

OBJECTIVES: Religiosity/spirituality (R/S) seems to be a relevant factor in chronic diseases adaptation, but there is a lack of studies involving chronic kidney disease (CKD). This study aimed to investigate the association between R/S and happiness among CKD patients on hemodialysis and whether Sense of Coherence (SC) mediates this possible association. METHODS: This was a cross-sectional study in two renal replacement therapy centers in Brazil, involving 161 adults on hemodialysis. Linear regressions were performed to evaluate the association between R/S (predicting variable measured with Duke Religious Index - DUREL) and happiness (outcome variable), adjusted for sociodemographic, clinical, and some laboratory variables. Later, SC was added to the model to test the possible mediating effect. RESULTS: Most patients (91.20%) reported some religious affiliation. Private Religiosity (PR) (β = 0.53; 95% CI = 0.01 a 1.06), Intrinsic Religiosity (IR) (β = 0.48; 95% CI = 0.18 a 0.79), and SC (β = 0.11; 95% CI = -0.09 a 0.15) correlated with higher levels of happiness, controlling for clinical and sociodemographic variables. When SC was included in the model, IR (β = 0.34; 95% CI = 0.07 to 0.60) and SC (β = 0.11; 95% CI = 0.08 to 0.14) remained significantly. No clinical or sociodemographic variable correlated with happiness. CONCLUSIONS: Patients on hemodialysis showed high levels of R/S, which correlated with higher happiness levels. Clinical and sociodemographic variables were not correlated with patients' happiness. Psychosocial variables such as R/S and SC are potential key targets for interventions to promote better survival quality among CKD patients.