4.4 Article

Cost-effectiveness of internet-delivered cognitive behaviour therapy for body dysmorphic disorder: Results from a randomised controlled trial

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ELSEVIER
DOI: 10.1016/j.invent.2023.100604

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Body dysmorphic disorder; Cognitive behaviour therapy; Cost-effectiveness

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This study conducted a cost-effectiveness analysis of internet-delivered cognitive behaviour therapy for body dysmorphic disorder (BDD-NET) and found that BDD-NET is more cost-effective compared to online supportive psychotherapy.
Objectives: To evaluate the cost-effectiveness of internet-delivered cognitive behaviour therapy for body dys-morphic disorder (BDD-NET).Design: Secondary cost-effectiveness analysis from a randomised controlled trial on BDD-NET versus online supportive psychotherapy. Setting: Academic medical center.Participants: Self-referred adult participants with a primary diagnosis of body dysmorphic disorder and a score of 20 or higher on the modified Yale-Brown Obsessive Compulsive Scale for BDD (n = 94). Patients receiving concurrent psychotropic drug treatment were included if the dose had been stable for at least two months. Interventions: Participants received either BDD-NET (n = 47) or online supportive psychotherapy (n = 47) for 12 weeks.Primary and secondary outcome measures: The primary outcome measures were cost-effectiveness and cost-utility from a societal perspective, using remission status from a diagnostic interview and quality-adjusted life years (QALY), respectively. Secondary outcome measures were cost-effectiveness and cost-utility from a health care perspective and the clinic's perspective.Results: Compared to supportive psychotherapy, BDD-NET produced one additional remission for an average societal cost of $4132. The cost-utility analysis showed that BDD-NET generated one QALY to an average cost of $14,319 from a societal perspective. Conclusions: BDD-NET is a cost-effective treatment for body dysmorphic disorder, compared to online supportive psychotherapy. The efficacy and cost-effectiveness of BDD-NET should next be directly compared to in-person cognitive behaviour therapy.

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