To examine the effects of CBT/behavioural therapy-based self-help in comparison with treatment as usual/waiting-list/attention placebo/psychological placebo control conditions for depression in adults and adolescents, and in particular to examine the effects of CBT/behavioural therapy-based self-help on:
- depressive symptomatology and overall symptoms;
- quality of life;
- suicide prevention; and
- potential economic benefit
This is a protocol.