Toward implementation of an evidence-based intervention for fear of cancer recurrence: Feasibility in real-world psycho-oncology practice

Objective: Few evidence-based interventions addressing high levels of fear of cancer recurrence (FCR) have been implemented. Understanding how these might be implemented is crucial to bridge the research-practice gap. This study investigated the feasibility of implementing the blended Survivors' Worries of Recurrent Disease (SWORD) intervention in real-world psycho-oncology practice. Methods: SWORD was offered for 15 months (2021-2022) as the standard care for clinical FCR in a university hospital, a general hospital, and psycho-oncological center. We evaluated using a mixed-methods design six feasibility outcomes based on Bowen's framework: demand, limited effectiveness, degree of execution, acceptability, practicality, and integration. Anonymous data were collected for all oncology patients on referral. Study participants completed questionnaires before and after treatment, including the Cancer Worry Scale (CWS-6) as the primary measure of effectiveness. Qualitative data included interviews with patients and psychologists, and field notes. Results: Regarding demand, 81 of 644 patients referred (13%) were eligible for SWORD. The uptake of SWORD was 79% (n = 63/80) and the completion rate 73% (n = 46/63). SWORD was effective in reducing FCR (p < 0.001, eta p(2) = 0.694). Regarding execution, a variability in the length, planning and number of treatment sessions was found between different settings. Adherence to the treatment manual's content was high (89%). Regarding acceptability, most patients were satisfied with SWORD (average 8.2/10) and psychologists valued the blended format. Psychologists reported SWORD was practical to deliver given their knowledge and skills. Although differences between settings were found, SWORD integrated well into practice. Referral for FCR and a reluctance to contract new eHealth providers were barriers for implementation. Conclusions: Despite differences between healthcare settings, the implementation of SWORD was evaluated well. The feasibility of SWORD in different settings should inform a national implementation strategy.