A meta-analysis included 41 randomized controlled trials that compared CBT with placebo.1 In 34 of these studies, the intervention was delivered on an individual basis, whereas in the remaining 7 studies CBT was delivered to groups.1 There was a mean of 11 CBT sessions across the studies. 1 Overall, there was an almost threefold higher response rate with CBT vs placebo.1
Cognitive–behavioural therapy
