CBT/DBT-Informed Intensive Outpatient Treatment for Anxiety and Depression: A Naturalistic Treatment Outcomes Study

Abstract

Anxiety and depression are highly prevalent and disabling mental health disorders, with comorbidity often posing as a barrier to successful treatment outcomes, thus creating a need for more intensive treatment options. Outpatient clinicians are more likely to refer patients with severe symptoms of anxiety and depression to inpatient hospitalizations rather than partial hospital programs (PHPs) or intensive outpatient programs (IOPs), despite evidence that inpatient hospitalization is associated with high costs and other risks following discharge. The present study reviews two case studies of patients who received cognitive-behavioral therapy/dialectical behavior therapy (CBT/DBT)-based IOP treatment in a private New York clinic. We evaluated treatment outcomes for 73 adult patients (50.7% female) with a mean age of 29.10 years (SD = 10.30). At intake, patients averaged 2.15 diagnoses (SD = 0.94, range = 4) and the majority (80.8%) were prescribed psychotropic medication. Treatment was structured and individually tailored, with patients receiving an average of 21.77 hours (SD = 15.06) of psychotherapy over 12.63 treatment sessions (SD = 9.76), across 12.21 days (SD = 9.61). We observed a clinically and statistically significant change in symptoms of anxiety (t = 6.24, p < .001), depression (t = 5.55, p < .001), and suicidality (t = 2.32, p < .05) over the course of the IOP. After completing treatment, 68.1% of participants tapered down to once-weekly treatment. The present study highlights the clinical utility of an IOP and suggests that this approach can be effective for adult patients presenting with severe symptoms of anxiety and/or depression.