Dyadic coping of patients with hematologic malignancies and their partners and its relation to quality of life - a longitudinal study.

Coping with cancer can potentially modify couples' quality of life (QoL). The predictive impact of dyadic coping (DC) on QoL was investigated within patients with hematological cancer and their partners. Data were collected in a multi-centre longitudinal study (N = 208 couples). We use the SF-12 questionnaire (QoL) and the Dyadic Coping Inventory. Data were mainly analyzed with actor-partner interdependence models (APIM). Within the APIM, baseline QoL was the most significant predictor for QoL (t2). Regarding DC, there were partner effects on physical QoL (t2) and actor and partner effects on mental QoL at t2. Different subtypes of DC have intra- and/or interpersonal impact on patient's or partner's QoL. In a clinical setting, patients as well as partners should be seen as both a source of support for each other and as individuals in need of support themselves. Such awareness and targeted intervention may help couples adapt to and cope with cancer.