Abstract 16701: Depressive Symptoms in Patients with Heart Failure and Caregivers Influence Their Own and Their Partners' Mental Component of Quality of Life
Background: Depressive symptoms are common in patients with heart failure (HF) and in their family caregivers. The theory of emotional contagion suggests that depressive symptoms of individuals in an intimate relationship can be transmitted to each other and may thus contribute to a partner's quality of life (QOL). However, this has not been clearly demonstrated. We used the innovative Actor-Partner Interdependence Model (APIM) dyadic analysis technique to test the following hypothesis: Individuals’ depressive symptoms will impact their partner's mental component of QOL but not their physical component of QOL.
Method: A total of 102 patients with HF and family caregivers (patients: 64% in males, mean age 62 years, 50% NYHA III/IV; caregivers’ mean age 57 years) participated. Depressive symptoms were assessed using the Patient Health Questionnaire-9. Quality of life was assessed using the Short Form-12 which has physical and mental components of QOL. Dyadic data were analyzed using the APIM with distinguishable dyad regression model. In APIM, the actor effect is the impact of a person's depressive symptoms on his/her own QOL. The partner effect is the impact of a person's depressive symptoms on his/her partner's QOL.
Result: Depressive symptoms exhibited both actor and partner effects in patients (actor, β = -1.53, p < .001; partner, β = -.238, p = .024) and caregivers (actor, β = -1.22, p < .001; partner, β = -.369, p = .004) on mental component of QOL (Figure 1). Depressive symptoms exhibited only an actor effect among patients (β = -.51, p = .005) and caregivers (β = -.82, p < .001) on physical components of QOL.
Conclusion: These results demonstrate the presence of interdependent relationships between patients’ and caregivers’ depressive symptoms. The fact that individuals’ depressive symptoms were only associated with their own physical component of QOL supports the validity of the assumption that depression can affect adversely their partners’ mental component of QOL.
- © 2010 by American Heart Association, Inc.