Protocol for a randomised controlled trial of Overcome Death Anxiety: an online cognitive behavioural therapy intervention in a clinical sample.

Background: Evidence suggests that death anxiety is a transdiagnostic construct underlying numerous anxiety-related conditions. A previous phase I trial of Overcome Death Anxiety (ODA), a novel online stand-alone psychological intervention to reduce death anxiety, demonstrated preliminary evidence of efficacy and acceptability in a clinical population. However, this trial was limited by a small sample size (n=20).

Aims: To further evaluate the efficacy of this intervention in reducing death anxiety in a clinical population, compared with a waitlist control.

Method: This paper describes the protocol of a phase II randomized controlled, unblinded trial of ODA. A total sample of 256 adults living in Australia, diagnosed with an anxiety-related condition, will be recruited. These participants will be randomised to ODA or a waitlist control. Primary outcomes will be measured as changes in scores on death anxiety questionnaires, reflecting treatment efficacy. The secondary outcomes to be measured are depression, anxiety, stress, suicidality, insomnia, and meaning of life, as well as feedback about treatment program acceptability. This trial will assess the efficacy of ODA for reducing death anxiety in a population diagnosed with various anxiety-related conditions, as well as the overall acceptability and tolerability of the intervention.

Conclusions: This study will provide evidence to evaluate the efficacy of ODA in people diagnosed with an anxiety-related condition.