OBJECTIVE: A few meta-analyses have examined psychological treatments for a social anxiety disorder (SAD). This is the first meta-analysis that examines the effects of cognitive behavioural group therapies (CBGT) for SAD compared to control on symptoms of anxiety. METHOD: After a systematic literature search in PubMed, Cochrane, PsychINFO and Embase was conducted; eleven studies were identified that met the inclusion criteria. The studies had to be randomized controlled studies in which individuals with a diagnosed SAD were treated with cognitive-behavioural group therapy (CBGT) and compared with a control group. The overall quality of the studies was moderate. RESULTS: The pooled effect size indicated that the difference between intervention and control conditions was 0.53 (96% CI: 0.33-0.73), in favour of the intervention. This corresponds to a NNT 3.24. Heterogeneity was low to moderately high in all analyses. There was some indication of publication bias. CONCLUSIONS: It was found that psychological group-treatments CBGT are more effective than control conditions in patients with SAD. Since heterogeneity between studies was high, more research comparing group psychotherapies for SAD to control is needed.
Wersebe, H., Sijbrandij, M., & Cuijpers, P. (January 01, 2013). Psychological group-treatments of social anxiety disorder: a meta-analysis. Plos One, 8, 11.)