Do Parents Enhance Cognitive Behavior Therapy for Youth Anxiety? An Overview of Systematic Reviews Over Time.

The last 20 years has seen debate regarding the merits of involving parents in cognitive behavior therapy (CBT) for youth anxiety played out across systematic reviews which have high impact. These reviews examined varying treatment formats in relation to parent involvement, including youth only CBT (Y-CBT), parent only CBT (P-CBT) and family CBT (youth and parent; F-CBT). This is a novel overview of systematic reviews examining evidence for parental involvement in CBT for youth anxiety over the period this was studied. Two independent coders systematically searched for studies in medical and psychological databases using the categories "Review", "Youth", "Anxiety", "Cognitive Behavior Therapy" and "Parent/Family". Of the 2,189 unique articles identified, there were 25 systematic reviews since 2005 which compared the effects of CBT for youth anxiety with varying parent involvement. Despite systematically studying the same phenomenon, the reviews were heterogeneous in outcome, design, inclusion criteria and often had methodological limitations. Of the 25 reviews, 21 found no difference between formats and 22 reviews were considered inconclusive. Yet while there were typically no statistical differences, consistent patterns in the direction of effects were detected over time. P-CBT was less effective than other formats, suggesting the importance of directly treating anxious youths. Early reviews favored F-CBT over Y-CBT, however, later reviews did not show this trend. We consider the effects of moderators including exposure therapy, long-term outcomes and the child's age. We consider how to manage heterogeneity in primary studies and reviews to better detect treatment differences where they exist.Trial registration This protocol is registered with the Open Science Framework: osf.io/2u58t.