Figure 2. Body Dysmorphic Disorder Symptom Severity Over Time by Treatment and Site.

The Yale-Brown Obsessive-Compulsive Scale Modified for Body Dysmorphic Disorder (BDD-YBOCS) mean scores decreased over time in the supportive psychotherapy (SPT) and cognitive behavioral therapy for body dysmorphic disorder (CBT-BDD) treatment arms from baseline to end of treatment (solid lines) and remained relatively unchanged during follow-up (dashed lines). Symptom severity of BDD decreased more in the CBT-BDD than supportive psychotherapy treatment arm at Rhode Island Hospital (RIH), but not at Massachusetts General Hospital (MGH). The lines shown are the model-based estimates of change over time in each treatment by site group, whereas the data points represent the raw means (SEs) of all available observations in each group at each time point. The data points based on raw data and the model-based linear trend estimates were offset from the actual week numbers in the graph to enable the visual discrimination of individual SE bars.