P120 Development and analysis of acceptance and commitment therapy (ACT)-informed group and 1-1 psychological interventions for a rheumatology population
Authors: Maher-Edwards Lorraine , Quigley Alexandra , Gillanders David , Ng Nora 
Published: April 2020

Abstract

Background
Psychiatric comorbidities are common in patients living with rheumatological conditions and are associated with poorer health outcomes and treatment response. The evidence-base for psychological intervention in this population is scarce. Acceptance- and mindfulness-based cognitive therapies are of increasing popularity. Acceptance and Commitment Therapy (ACT) is a psychological therapy with a robust evidence-base for mood disorders and long-term health conditions, in particular in chronic pain populations. ACT aims to help clients to develop skills to identify and let go of unhelpful patterns of symptom control and avoidance so that they can move towards important life areas (values) and goals. Research has consistently shown that higher levels of acceptance (a component of psychological flexibility) in chronic illness is associated with better quality of life and emotional well-being. No studies have looked at the effects of ACT-based interventions in rheumatology. This study aimed to: Develop and pilot I) a 6-week group and II) a brief (up to 6 sessions) one to one intervention based on Acceptance and Commitment Therapy (ACT) in a rheumatology population. Outcomes were evaluated using patient satisfaction data, qualitative feedback and quantitative outcomes using a range of questionnaires measuring mood, quality of life and psychological flexibility.

Methods
Patients attending a rheumatology psychology service received either group OR brief one to one intervention delivered by a qualified psychologist. Group consisted of 6 sessions; each session was 3 hours (18 hours total). The brief one to one intervention consisted of up to 6 one-hour face to face sessions (max 6 hours total). A range of outcome measures were administered pre- and post-treatment. Paired t-tests were conducted, and the Jacobson and Truax method used to calculate Reliable Change Index and Clinically Significant Change criteria. Effect sizes were calculated using Cohens’ d. For comparison published data in chronic pain populations were used.

Results
Patients responded well to ACT-based interventions: with improvements in mood, psychological flexibility and quality of life. All effect sizes were large and compared favourably to published trials in chronic pain populations. Group participants showed significant improvements in depression and psychological flexibility pre- to post- treatment. On the other hand, participants who received the brief one to one intervention showed significant improvements on all measures. Overall those who had group therapy showed smaller improvements in outcome measures, rated themselves as less improved and were less satisfied with their therapy than those that received up to 6 sessions of individualised therapy.

Conclusion
A brief one to one intervention of up to 6 sessions of ACT-based psychological therapy conferred good benefit for a rheumatology population and outperformed group therapy. More studies are needed to understand whether this effect is generalisable and longer-term outcomes.

Disclosures
L. Maher-Edwards None. A. Quigley None. D. Gillanders None. N. Ng None.