Fig. 1From: Effects of cognitive behavioural therapy and bright light therapy for insomnia in youths with eveningness: study protocol for a randomised controlled trialFlowchart of study design. CBTI + BLT cognitive behavioural therapy with active bright light therapy, CBTI-BLT cognitive behavioural therapy with placebo light therapy, HADS Hospital Anxiety and Depression Scale, ISI Insomnia Severity Index, rMEQ reduced Morningness-Eveningness Scale, WL waitlist controlBack to article page