Cadman, T., Spain, D., Johnston, P., Russell, A., Mataix-Cols, D., Craig, M. C, Deeley, Q., Robertson, D., Murphy, C. M, Gillan, N., Wilson, C. E, Mendez, M., Ecker, C., Daly, E. M, Findon, J., Glaser, K., Bailey, A. J, Baron-Cohen, S., Bolton, P. F, Bullmore, E. T, Carrington, S., Chakrabarti, B., Daly, E. M, Deoni, S. C, Ecker, C., Happé, F., Henty, J., Jezzard, P., Johnston, P., Jones, D. K, Lombardo, M. V, Madden, A., Mullins, D., Murphy, C., Murphy, D. G, Pasco, G., Sadek, S. A, Spain, D., Steward, R., Suckling, J., Wheelwright, S. J & Williams, SC. (2015). Obsessive-compulsive disorder in adults with high-functioning autism spectrum disorder: What does self-report with the OCI-R tell us?. Autism Research,8(5), 477-485. United States: John Wiley and Sons Inc.. Retrieved from https://doi.org/10.1002/aur.1461
Little is known about the symptom profile of obsessive-compulsive disorder (OCD) in individuals who have autism spectrum disorders (ASD). It is also unknown whether self-report questionnaires are useful in measuring OCD in ASD. We sought to describe the symptom profiles of adults with ASD, OCD, and ASD + OCD using the Obsessive Compulsive Inventory-Revised (OCI-R), and to assess the utility of the OCI-R as a screening measure in a high-functioning adult ASD sample. Individuals with ASD (n = 171), OCD (n = 108), ASD + OCD (n = 54) and control participants (n = 92) completed the OCI-R. Individuals with ASD + OCD reported significantly higher levels of obsessive-compulsive symptoms than those with ASD alone. OCD symptoms were not significantly correlated with core ASD repetitive behaviors as measured on the ADI-R or ADOS-G. The OCI-R showed good psychometric properties and corresponded well with clinician diagnosis of OCD. Receiver operating characteristic analysis suggested cut-offs for OCI-R Total and Checking scores that discriminated well between ASD + versus –OCD, and fairly well between ASD-alone and OCD-alone. OCD manifests separately from ASD and is characterized by a different profile of repetitive thoughts and behaviors. The OCI-R appears to be useful as a screening tool in the ASD adult population.
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