Does Exposure and Response Prevention Behaviorally Activate Patients With Obsessive-Compulsive Disorder? A Preliminary Test

Exposure and response prevention (ERP) and behavioral activation (BA) are effective treatments for obsessive-compulsive disorder (OCD) and depression, respectively. Patients with OCD often exhibit depression; furthermore, ERP for OCD is associated with reduced depressive symptoms. To our knowledge, no study has examined whether ERP itself functions to behaviorally activate patients with concurrent OCD and depressive symptoms. This prospective study was designed to test the hypotheses that (a) OCD exposure hierarchy completion, increased BA, and depressive symptom reduction would all be related, and (b) pre- to posttreatment changes in BA would mediate the direct effect of OCD hierarchy completion on posttreatment depressive symptoms, even after controlling for pretreatment depressive symptoms, pretreatment BA, pre- to posttreatment reductions in OCD symptoms, treatment duration, and antidepressant medication use. Patients (N = 90) with a primary diagnosis of OCD who received residential ERP for OCD completed a self-report battery at pre- and posttreatment. Exposure hierarchy completion, increases in BA, and decreases in depression were all significantly correlated (rs ranged .33 to .44). The effect of hierarchy completion on posttreatment depressive symptoms was fully mediated by pre- to posttreatment changes in BA. Findings highlight the potential for ERP to exert antidepressant effects by behaviorally activating patients. Limitations, clinical implications, and future directions are discussed.     

Predictors of treatment outcome for youth receiving intensive residential treatment for obsessive–compulsive disorder (OCD)

ABSTRACT

Little is known about the predictors of outcome from intensive residential treatment of OCD. This study aimed to examine age, gender, and baseline OCD severity, as well as measures of comorbid anxiety and depressive, internalizing/externalizing, and inattention symptoms, as predictors of treatment outcome in adolescents receiving intensive residential treatment for OCD.

The sample comprised 314 adolescents aged 13–17 years with treatment-resistant OCD and a Children’s Yale–Brown Obsessive–Compulsive Scale Self-Report (CY-BOCS-SR) total score ≥16. Bivariate and multiple regression models were used to evaluate the predictors of continuous OCD severity outcome and treatment response.

Results of the bivariate regression analyses of predictors demonstrated that length of treatment, pre-treatment OCD severity, and symptoms of anxiety and depression significantly predicted post-treatment OCD severity, while only symptoms of depression and anxiety predicted treatment response. When including all predictors in the same model, only baseline OCD severity remained a significant predictor of post-treatment OCD severity, and none of the assessed variables significantly predicted treatment response.

Results indicate that low pre-treatment OCD severity predicts lower OCD severity following treatment, although it did not predict treatment response.