Abstract

Objective: This study examined whether patients who were randomly assigned to their preferred therapy arm had stronger engagement with their treatment than those who were randomly assigned to a non-preferred therapy arm.Method: Data were drawn from a RCT comparing Individual Meaning-Centered Psychotherapy, with Individual Supportive Psychotherapy, in patients with advanced cancer. Treatment engagement was operationalized as patients' perceptions of the therapeutic alliance with their therapist and therapy sessions attended. Two 2 by 2 Analysis of Variance models were used, with treatment preference and treatment assignment as the independent variables and working alliance and number of sessions attended as outcome variables.Results: Patients who preferred and were assigned to IMCP reported a significantly stronger alliance than those who preferred IMCP but were assigned to ISP.Conclusions: The findings from this study have broader implications for research on psychotherapy beyond the appeal of IMCP in advanced cancer patients. Patients who prefer a novel psychotherapy that they cannot engage in elsewhere, but receive the standard treatment may experience weaker alliance than patients who prefer the standard but receive the novel therapy.Trial registration:Clinicaltrial.gov ID: NCT01323309.