The Mediation Role of Relatedness and Competence for Patient Activation: A Longitudinal Study of Older Adults with Chronic Illness

Background: Patient activation is associated with both health outcomes and the utilization of healthcare resources. Since various factors influence activation levels among older ill adults, further exploration of this topic is needed. Specifically, we aim to examine the extent to which changes over time in self-rated symptoms of depression are associated with changes in patient activation and to what extent self-rated health status and satisfaction of basic psychological needs (autonomy, relatedness, and competence) have a mediation effect. Methods: A longitudinal and correlational design was employed in which two hundred and seven participants with heart failure or chronic obstructive pulmonary disease were recruited from two hospitals in the middle of Sweden. The sample used in this study is the same as that used in a randomized controlled trial. A questionnaire was administered at baseline, and at 30-, 90-, and 180 days post-discharge, involving ratings of depression, patient activation, self-rated health, and satisfaction of basic psychological needs (autonomy, relatedness, and competence). As the results from the original study showed no difference between the two randomized groups in patient activation, the analysis in this study was conducted using a combined sample in which the intervention and control groups were merged. For estimation of the direct effects and the components of indirect effects, we employed multilevel modeling using a linear mixed model, and to test mediation, the stand-alone program RMediation was used. Results: Over time, increases in depressive symptoms were associated with reduced patient activation, with this relationship mediated by declines in relatedness and competence. No evidence was found showing that autonomy or self-rated health had a mediation effect. Conclusions: The results indicate that older chronically ill individuals may benefit from interventions targeting psychological mediators to improve and sustain activation.