A community-based group-guided self-help intervention for low mood and stress: study protocol for a randomised controlled trial.

Background Depression is a mental health condition which affects millions of people each year, with worldwide rates increasing. Cognitive behavioural therapy (CBT) is recommended in the National Institute for Health and Clinical Excellence (NICE) guidelines for the treatment of depression. However, waiting lists can cause delays for face-to-face therapy. Also a proportion of people decline to present for help through the health service - the so-called treatment gap. Self-referral to CBT using community based group interventions delivered by a voluntary sector organisation may serve to resolve this problem. The aim of this randomised controlled trial (RCT) is to determine the efficacy of such a guided CBT self-help course, the 'Living Life to the Full' (LLTTF) classes delivered by the charity Action on Depression (AOD). The primary outcome is level of depression at 6 months assessed using the PHQ9 depression scale. Secondary measures include levels of anxiety and social functioning. Methods/design Participants with symptoms of low mood will be recruited from the community through newspaper adverts and also via the AOD website. Participants will receive either immediate or delayed access to guided CBT self-help classes - the 8 session 'Living Life to the Full' course. The primary end point will be at 6 months at which point the delayed group will be offered the intervention. Levels of depression, anxiety and social functioning will be assessed and an economic analysis will be carried out. Discussion This RCT will test whether the LLTTF intervention is effective and/or cost-effective. If the LLTTF community based classes are found to be cost effective, they may be helpful as both an intervention for those already seeking care in the health service, as well as those seeking help outside that setting, increasing access to psychological therapy. Trial registration Current Controlled Trials ISRCTN86292664. [ABSTRACT FROM AUTHOR]