Coercive and disruptive behaviors mediate group cognitive-behavioral therapy response in pediatric obsessive-compulsive disorder.

PURPOSE: Coercive and disruptive behaviors (CDBs) are commonplace in pediatric obsessive-compulsive disorder (OCD) and are associated with increased disorder impact and reduced treatment response. Prior research suggests that CDBs mediate the cross-sectional relationship between family accommodation and OCD symptom severity; however, the impact of reducing CDBs on other treatment outcomes has yet to be studied.

METHODS

Participants comprised 49 OCD-affected youth (42.9% male, Mage at baseline = 13.7) and their parent(s) who completed a 12-week, group family-based cognitive-behavioral treatment at an OCD specialty clinic. Outcomes included parent-report measures of CDBs, family accommodation, symptom severity, and both child- and family-level impairment. Descriptive, correlation, and regression analyses were followed by tests of indirect effects (mediation).

RESULTS

Changes in all outcome variables had moderate to strong correlations with each other. As hypothesized, CDB decreases predicted positive changes in OCD severity as well as in child and family impairment. Further, whereas improvement in OCD severity predicted changes in child and family impairment, improvements in family accommodation were not directly predictive of any outcomes. Consistent with hypotheses, changes in CDBs mediated relationships between changes in accommodation and child- and family-level impairment, as well as relationships between changes in OCD severity and both levels of impairment. Additional exploratory analyses found that changes in symptom severity significantly mediated relationships between changes in CDBs and both levels of impairments.

CONCLUSIONS

Findings suggest that attention to reducing CDBs is warranted in the treatment of pediatric OCD, and that accommodation reductions lead to meaningful improvements in child and family functioning only when CDBs and/or symptoms are also reduced. Future family-based treatments may benefit from inclusion of components specifically targeting CDBs that occur within the context of accommodating OCD symptoms.