title: A cognitive-behavioral group for patients with various anxiety disorders.
abstract: OBJECTIVE
  Cognitive-behavioral therapy (CBT) protocols for each of the anxiety disorders are robust and effective but are best suited for specialty clinics. This study assessed a format more suitable for general clinics: a single protocol based on standard CBT techniques designed to treat patients who have different anxiety disorders in the same group.
  
  
  METHODS
  Potential participants in Vancouver, British Columbia, were administered a structured clinical interview to identify those with major anxiety disorders: panic disorder, with or without agoraphobia; obsessive-compulsive disorder; social phobia; generalized anxiety disorder; specific phobia; and posttraumatic stress disorder. Forty-three percent of participants had more than one current anxiety diagnosis. Those with active substance abuse or dependence or with psychosis were excluded. A total of 152 patients were randomly assigned to immediate treatment in the 11-week CBT group or to a wait-list control group. The Beck Anxiety Inventory (BAI) was administered at baseline, at the end of treatment or of the waiting period, and six months later.
  
  
  RESULTS
  Reductions in BAI scores for participants in the immediate-treatment groups were greater than those for the control group participants. Patients with panic disorder in particular appeared to benefit. Outcomes for the immediate-treatment group were superior in terms of clinically significant changes, defined as a 20% or 40% improvement. Reductions in BAI scores continued to be present six months later. The improvements correspond to a medium effect size (Cohen's d=.50).
  
  
  CONCLUSIONS
  A group CBT protocol for mixed anxiety disorders may make effective treatment more widely available.
authors.affiliation: Department of Psychology, Royal Columbian Hospital, New Westminster, British Columbia, Canada. david.erickson@fraserhealth.ca
authors.forename: David H
authors.initials: DH
authors.lastname: Erickson
authors.forename: Amy S
authors.initials: AS
authors.lastname: Janeck
authors.forename: Karen
authors.initials: K
authors.lastname: Tallman
mesh_terms: D000328:Adult; D001008:Anxiety Disorders / Q000145:classification / Q000175:diagnosis / Q000628:therapy*; D001955:British Columbia; D015928:Cognitive Behavioral Therapy / Q000379:methods*; D005260:Female; D006801:Humans; D007406:Interview, Psychological; D008297:Male; D008875:Middle Aged; D017063:Outcome Assessment, Health Care; D011615:Psychotherapy, Group / Q000379:methods*; D014481:United States