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Table 3 Comparison of effect sizes of CBT on Panic Disorder Severity Scale scores

From: A feasibility study of the clinical effectiveness and cost-effectiveness of individual cognitive behavioral therapy for panic disorder in a Japanese clinical setting: an uncontrolled pilot study

Study group CBT protocol N Mean per item ES
Pre Post
(SD) (SD)
Present study 60 min 15 1.7 0.8 1.77
16 weeks   0.6 0.5  
Barlow et al. [10]a CBT 77 1.82 1.14 1.04
12 weeks   (0.6) (0.7)  
Imipramine 83 1.88 1.05 1.23
12 weeks   (0.6) (0.8)  
Placebo 24 1.88 1.52 0.46
12 weeks   (0.5) (0.9)  
CBT+ imipramine 65 1.86 0.88 1.48
12 weeks   (0.6) (0.7)  
CBT+ placebo 63 1.74 0.99 1.22
12 weeks   (0.5) (0.7)  
  1. aMean represents the average value of one item. The effect sizes reported are based on our calculations