Fig. 1From: Group-delivered cognitive behavioural therapy versus waiting list in the treatment of insomnia in primary care: study protocol for a pragmatic, multicentre randomized controlled trialPlanned study design of the pragmatic, multicentre randomized controlled trial investigating the effectiveness of group-delivered CBT-I on insomnia severity in primary care. ISI = Insomnia Severity Index, CBT-I = cognitive behavioural therapy for insomniaBack to article page