Individuals with cancer experience significant levels of distress. Improving health-related quality of life of persons with cancer is a major focus in cancer treatment. This study investigated the mediating role of self-efficacy for coping with cancer in the relationship between mental adjustment to cancer and health-related quality of life among individuals with cancer. Two hundred and fourteen persons with cancer (male = 74, female = 140, mean age = 50.57) were recruited from a University Teaching Hospital, in South-West Nigeria. Participants responded to the measures of psychological responses to cancer (mental adjustment to cancer), self-efficacy for coping with cancer (Cancer Behaviour Inventory [CBI]), and health-related quality of life (Functional Assessment of Cancer Therapy–General). Mediation analysis and structural equation modelling were carried out using IBM AMOS software version 23. Domains of mental adjustment to cancer significantly predicted health-related quality of life, helplessness/hopelessness, and anxious preoccupation had a negative association with health-related quality of life; whereas fighting spirit, cognitive avoidance, and fatalism were positively associated with health-related quality of life. Self-efficacy had a positive association with health-related quality of life. Mediation analysis showed that self-efficacy for coping with cancer partially mediated the association between four domains of mental adjustment to cancer (helplessness/hopelessness, fighting spirit, cognitive avoidance, and fatalism) and health-related quality of life. The findings demonstrated the need for improved coping mechanisms while undergoing cancer treatment. The study has important clinical implications for psycho-oncology practice, particularly with respect to self-efficacy for coping with cancer. Psychosocial therapies aimed at enhancing the self-efficacy of persons with cancer should be incorporated as part of cancer treatment to improve their health-related quality of life.
Assessment of coping with cancer-related burdens: psychometric properties of the Cognitive-Emotional Coping with Cancer scale and the German Mini-mental Adjustment to Cancer scale
