Mediation effect of depressive symptoms in the relationship between perceived control and wellbeing in patients with heart failure and their partners

Background: As treatment has improved, patients with heart failure live longer, and the care mostly takes place at home with partners providing the main assistance. Perceived control over heart failure is important in managing self-care activities to maintain health in patients and their family. Depressive symptoms are associated with impaired health status in patients with heart failure and their family. However, there is limited knowledge about how depressive symptoms affect the relationship between health status and perceived control over heart failure in patients with heart failure and their cohabiting partners. Aim: The aim of this study was to examine whether the relationship between perceived control and health status (i.e. mental and physical) was mediated by depressive symptoms in patients with heart failure and their partners. Methods: In this secondary data analysis, we included 132 heart failure patients and 132 partners who completed measures of depressive symptoms (the Beck depression inventory II), perceived control (the control attitude scale), and physical and mental health status (the short form-36) instruments. The mediation effect of depression was examined using a series of multiple regression in patients and their family caregivers separately. Results: We found a mediator effect of depressive symptoms in the relationship between perceived control and mental health status in both patients and partners. The relationship between perceived control and physical health status was mediated by depressive symptoms in the patients, not in the partners. Conclusion: Efforts to improve self-care management and maintenance by targeting perceived control may be more effective if depressive symptoms are also effectively managed.