title: Group and individual treatment of obsessive-compulsive disorder using cognitive therapy and exposure plus response prevention: a 2-year follow-up of two randomized trials.
abstract: Relatively little is known about the long-term durability of group treatments for obsessive-compulsive disorder (OCD) and contemporary cognitive treatments. The current study investigated the 2-year follow-up results for participants who completed randomized trials of group or individual treatment and received either cognitive therapy (CT) or exposure plus response prevention (ERP). Yale-Brown Obsessive Compulsive Scale (YBOCS) scores for individual ERP and CT were not significantly different over 2 years. However, YBOCS scores were consistently lower over time for group ERP participants than for group CT participants. With a single exception in the group treatment study, secondary cognitive and depression scores were stable, indicating that gains achieved during acute treatment were maintained over 2 years. Less than 10% of treatment completers relapsed in each of the treatment trials. Approximately 50% of the completer sample was rated as recovered at 2 years. Additionally, a tentative cross-study comparison suggests that CT was better tolerated and resulted in less dropout than did ERP. Despite the overall positive results, efficacy of OCD treatments has reached a plateau and may require a fresh perspective to move forward.
authors.affiliation: Department of Psychiatry, University of British Columbia, Vancouver, British Columbia, Canada. whittal@interchange.ubc.ca
authors.forename: Maureen L
authors.initials: ML
authors.lastname: Whittal
authors.forename: Melisa
authors.initials: M
authors.lastname: Robichaud
authors.forename: Dana S
authors.initials: DS
authors.lastname: Thordarson
authors.forename: Peter D
authors.initials: PD
authors.lastname: McLean
mesh_terms: D000328:Adult; D015928:Cognitive Behavioral Therapy / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D009771:Obsessive-Compulsive Disorder / Q000175:diagnosis / Q000523:psychology / Q000628:therapy*; D011615:Psychotherapy, Group / Q000379:methods*; D055502:Secondary Prevention; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires