Economic Analyses of Obsessive-Compulsive Disorder Interventions: A Systematic Review.

BACKGROUND: Obsessive-compulsive disorder (OCD) is a neuropsychiatric condition featuring patterns of obsessions, compulsions, and avoidant behaviors that are often time consuming and distressing to affected individuals. Cognitive-behavioral therapy (CBT) with exposure and response prevention and/or serotonin reuptake inhibitors are first-line treatments for OCD, though other therapeutic interventions may serve as economically practical modalities under various circumstances. Exploring and understanding the cost effectiveness of all indicated OCD interventions are important to inform therapeutic decisions and provide quality patient-centered care at a cost that is not burdensome to the patient and/or healthcare system. METHODS: A systematic literature review was performed and studies were extracted from PubMed, Embase, Ovid MEDLINE, and Cochrane. All cost-effectiveness studies that included economic analyses with respect to OCD treatment modalities and were written in English and published between January 2010 and July 2022 were eligible for inclusion in the present study. We report a narrative synthesis of the findings and quality appraisal of the selected references. RESULTS: Of the 707 references returned in the literature search, a total of 18 cost-effectiveness studies were included for review. Compared with treatment as usual, several studies reported clinical superiority and cost effectiveness of Internet-based CBT programs for adults and children with OCD at various willingness-to-pay thresholds and economic reference indicators, though cost effectiveness relative to in-person CBT with exposure and response prevention is unclear and estimates of efficacy are likely lower for Internet-based CBT. One study favored the cost utility of serotonin reuptake inhibitor monotherapy over CBT with exposure and response prevention although efficacy estimates of the former tend to be lower, and relative cost differences were low. Five studies evaluated the cost effectiveness of high-intensity neuroaugmentation, including deep brain stimulation and stereotactic radiosurgical capsulotomy, in the context of treatment-refractory OCD. CONCLUSIONS: Despite the relatively high prevalence of OCD worldwide, cost-effectiveness data for therapeutic modalities remain sparse. Because of the chronic nature of OCD, the cost of treatment accumulates and may lead to a significant financial burden over time, particularly when non-evidence-based interventions are used. However, several alternative therapeutic modalities hold promise for economic practicality without significant sacrifice in clinical efficacy. Future studies are necessary to directly compare the cost effectiveness of such therapeutic alternatives with the current standard of care, CBT with exposure and response prevention.