The objective of the study was to examine the optimal Children's Yale-Brown Obsessive-Compulsive Scale (CY-BOCS) percent reduction and raw cutoffs for predicting cognitive-behavioral treatment (CBT) response among children and adolescents with obsessive-compulsive disorder (OCD). The sample consisted of children and adolescents with OCD (N = 241) participating in the first step of the Nordic long-term OCD treatment study and receiving 14 weekly sessions of CBT in the form of exposure and response prevention. Evaluations were conducted pre- and post-treatment, included the CY-BOCS, Clinical Global Impressions-severity/improvement. The results showed that the most efficient CY-BOCS cutoffs were 35 % reduction for treatment response, 55 % reduction for remission, and a post-treatment CY-BOCS raw total score of 11 for treatment remission. Overall, our results diverge from previous research on pediatric OCD with more conservative cutoffs (higher cutoff reduction for response and remission, and lower raw score for remission). Further research on optimal cutoffs is needed.
Keywords: Children’s Yale-Brown Obsessive–Compulsive Scale; Cognitive-behavioral treatment; Obsessive–compulsive disorder; Treatment.