Drakes DH, Fawcett EJ, Rose JP, et al. - This research sought to provide a precise, meta-analytic estimate of the prevalence of obsessive-compulsive disorder (OCD) amongst those with a current primary eating disorder (ED) diagnosis, and to isolate its predictors. Researchers carried out searches of PubMed and PsycINFO with a Boolean search phrase incorporating keywords related to OCD, EDs, comorbidity, prevalence, and epidemiology, complemented by references coded from related review articles and contact with experts in the field. In this analysis, 35 lifetime and 42 current estimates were calculated from the 846 articles identified. The outcomes demonstrate the prevalence of and risk for OCD in EDs to be greatest in anorexia nervosa binge-eating purging type. It was shown that OCD is most prevalent amongst patient samples than samples recruited from the community.