Relationships among self-disclosure, social support and psychological distress in caregivers of patients with advanced lung cancer: A mediating model

Objectives: To examine the relationship between self-disclosure, social support, and psychological distress among caregivers of patients with advanced lung cancer, the study also examined the factors that impact psychological distress and the effect of social support on the relationship between self-disclosure and psychological distress. Methods: A total of 288 caregivers of patients with advanced lung cancer were selected using a convenience sampling method from December 2022 to July 2023 at a tertiary hospital in China. Participants' self-disclosure, perceived social support, and psychological distress were assessed by corresponding questionnaires, respectively. Mediating effects were detected using Amos 26.0 software. Results: The total scores for psychological distress, perceived social support, and self-disclosure of caregivers were 28.62 +/- 6.45, 55.22 +/- 7.81, and 38.39 +/- 5.64, respectively. Correlation analysis suggested that psychological distress in caregivers was negatively correlated with both perceived social support and self-disclosure. Multiple linear regression analyses revealed that self-disclosure and perceived social support were influential factors of caregivers' psychological distress. Moreover, perceived social support partially mediated the relationship between self-disclosure and psychological distress, accounting for 54.37% of the total effect. Conclusion: Caregivers of patients with advanced lung cancer experience significant psychological distress. Selfdisclosure can affect caregivers' psychological distress directly and indirectly through perceived social support. Healthcare professionals should be attentive to caregivers' psychological distress and carry out relevant nursing measures to improve caregivers' self-disclosure and social support to promote their physical and mental health.