Effects of family-centered positive psychological intervention on psychological health and quality of life in patients with breast cancer and their caregivers

Purpose Positive psychological intervention could improve individual's psychological health and quality of life. This study aimed to examine the effectiveness of family-centered positive psychological intervention on resilience, hope, perceived benefits, and quality of life in breast cancer patients and their caregivers.Methods A two-group, randomized controlled study, including 98 dyads of breast cancer patients and caregivers, was conducted. Dyads were randomly assigned to intervention (n = 49) and control (n = 49) groups. Both the control and intervention groups received 4 weeks of health education, while the intervention group additionally received a 4-week family-centered positive psychological intervention. Outcome measures compared at baseline (T1), immediately after the intervention (T2), and at 1-month follow-up (T3), included validated measures of resilience (Connor-Davidson Resilience Scale), hope (Herth Hope Index), perceived benefits (Perceived Benefits of Diagnosis and Treatment of Breast Cancer, Positive Aspects of Caregiving), and quality of life (Functional Assessment of Cancer Therapy-Breast, Caregiver Quality of Life Scale).Results Resilience, hope, perceived benefits, and quality of life of dyads were significantly higher in the intervention group than those in the control group at T2 and T3 (all p < 0.05). Linear mixed model analysis demonstrated a significant interaction effect of group x time x role (p = 0.007) on hope and a significant difference in the improvement of hope (p < 0.05) between patients and their caregivers.Conclusions Our family-centered positive psychological intervention was effective in improving psychological health and quality of life for breast cancer patients and caregivers. This study provides evidence for the effectiveness of positive clinical psychological interventions.