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Table 4 Comparison of effect sizes by group CBT

From: Group cognitive behavior therapy for Japanese patients with social anxiety disorder: preliminary outcomes and their predictors

  Completers analyses        ITT    
Study Heimberg (1998) Stangier (2003) Present study Mörtberg (2007) Present study
Group 12 weeks 15 weeks 16 weeks 3 weeks 16 weeks
N 36    26    57    35    57   
Drop out (%) 22.2    15.4    12.3    25.7    12.3   
  Pre Post ES Pre Post ES Pre Post ES Pre Post ES Pre Post ES
LSAS total 59.0 46.2 0.97     77.2 58.5 0.71 68.1 52.5 0.75 76.2 59.6 0.65
SD 13.2 8.9      26.1 27.8   20.9 19.4   25.6 27.3  
Social fear 15.1 12.0 0.44     20.1 17.3 0.41     20.0 17.5 0.37
SD 7.0 4.9      6.8 7.2      6.9 7.2  
Social avoidance 13.1 9.9 0.42     18.4 14.2 0.53     18.1 14.3 0.47
SD 7.7 4.8      7.8 8.5      7.9 8.5  
Performance fear 17.0 13.4 0.65     20.9 15.9 0.83     20.8 16.3 0.78
SD 5.6 3.8      6.1 7.2      5.8 6.9  
Performance avoidance 13.8 10.9 0.47     17.2 11.1 0.80     17.3 11.5 0.71
SD 6.0 4.3      8.3 8.0      8.2 7.9  
FQ-spa 19.0 14.7 0.60     24.2 16.9 1.19 20.7 15.5 0.78 24.0 17.8 1.01
SD 7.2 4.0      6.2 8.1   6.7 7.1   6.2 7.8  
SPS 27.3 25.8 0.09 33.6 25.5 0.53 36.7 24.0 0.83 36.5 27.7 0.64 36.2 24.7 0.75
SD 17.0 10.0   15.3 15.3   15.4 15.3   13.8 11.5   15.4 15.2  
SIAS 41.8 39.4 0.13 45.8 38.4 0.53 54.9 41.8 0.89 44.5 36.7 0.48 54.8 43.0 0.79
SD 18.4 13.2   14.0 12.4   14.8 15.6   16.1 14.7   15.0 16.0  
FNE 22.3 21.4 0.12     24.3 20.8 0.68 22.5 21.5 0.15 24.6 22.1 0.49
SD 7.6 4.3      5.2 6.5   6.5 7.2   5.1 6.5  
  1. FQ-spa: Fear Questionnaire Social Phobia Subscale