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Insomnia predicts the onset of depression, commonly co-presents with depression and often persists following depression remission. However, these conditions can be challenging to treat concurrently using depression-specific therapies. Cognitive behavioural therapy for insomnia may be an appropriate treatment to improve both insomnia and depressive symptoms. We examined the effects of a fully-automated digital cognitive behavioural therapy intervention for insomnia (Sleepio) on insomnia and depressive symptoms, and the mediating role of sleep improvement on depressive symptoms in participants from two randomized controlled trials of digital cognitive behavioural therapy for insomnia. We also explored potential moderators of intervention effects. All participants met criteria for probable insomnia disorder and had clinically significant depressive symptomatology (PHQ-9 ≥ 10; n = 3,352). Individuals allocated to treatment in both trials were provided access to digital cognitive behavioural therapy. Digital cognitive behavioural therapy significantly improved insomnia (p 

Original publication

DOI

10.1111/jsr.13140

Type

Journal article

Journal

J Sleep Res

Publication Date

02/2021

Volume

30

Keywords

cognitive behavioural therapy, depression, internet, sleep, Cognitive Behavioral Therapy, Depression, Female, Humans, Male, Randomized Controlled Trials as Topic, Sleep Initiation and Maintenance Disorders, Treatment Outcome