Funnel plots to evaluate presence of publication bias are completed and available in a text file upon request. Because of incomplete published and available data, at best up to 10 studies had data available for any single analysis. The maximum number of total patients included in a single analysis is 543. CBT in a full or less intensive form is not significantly superior to CBT in a pure self-help form. Augmentation of CBT with exposure therapy is not more effective than CBT alone.
Funnel plots suggest a bias towards publication of positive outcome studies only.
This is an abstract of a regularly updated, systematic review prepared and maintained by the Cochrane Collaboration. Update Software Ltd. All rights reserved.