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Lookup NU author(s): Dr Lauren Mawn, Professor Mark FreestonORCiD
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© 2020 Elsevier Inc. Background: Comorbidity between obsessive compulsive disorder (OCD) and psychotic disorders has long been a subject of interest and speculation, with much overlap being reported. The current review seeks to: (1) Investigate the prevalence of co-occurring OCD and psychosis, reporting pooled prevalence rates; and (2) Explore variability in reported rates on the basis of categorical and/or dimensional classifications of OCD and psychosis and (3) explore potential moderators of variability. Method: A systematic search was performed of key databases (Embase, PSYCHInfo, MEDLINE, Scopus) from January 1988 to October 2017. Included in the meta-analyses were studies that reported adult (18+) prevalence of comorbid OCD, obsessional compulsive symptoms (OCS) and psychosis-related disorders. Results: 94 articles with 103 effect sizes were extracted. Overall, when using categorical diagnoses, the prevalence rate of comorbid OCD and psychotic disorder was 12% (n = 155649; k = 81; 95% CI = 9–15%). Using diagnostic plus symptom criteria, the prevalence was 24% (n = 9563; k = 46, 95% CI = 20–28%). Conclusion: Given the substantial co-occurrence, it is important that individuals presenting in routine clinical practice are assessed for both disorders. To advance understanding, future research must go beyond comorbidity to explore latent dimensions that may account for their development and/or maintenance (e.g., trauma).
Author(s): Mawn L, Campbell T, Aynsworth C, Beckwith H, Luce A, Barclay N, Dodgson G, Freeston MH
Publication type: Review
Publication status: Published
Journal: Journal of Obsessive-Compulsive and Related Disorders
Year: 2020
Volume: 26
Print publication date: 01/07/2020
Online publication date: 06/05/2020
Acceptance date: 29/04/2020
ISSN (print): 2211-3649
ISSN (electronic): 2211-3657
Publisher: Elsevier B.V.
URL: https://doi.org/10.1016/j.jocrd.2020.100539
DOI: 10.1016/j.jocrd.2020.100539
