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Aim The aim of the study was to systematically identify and synthesize the evidence for the effectiveness of digital cognitive behavioural therapy in insomnia with comorbid depression. Design Systematic review and metaanalysis. Methods A search was conducted on five English and four non-English databases from the inception of the databases to November 2023. This review adhered to the recommendations of the Preferred Reporting Items for Systematic Reviews and Meta-analysis Statement 2020 and the included studies were evaluated using version 2 of the Cochrane risk of bias tool. This review examined sleep-related outcomes, including insomnia severity and sleep diaries, along with psychological outcomes, such as depression. We conducted a meta-analysis of each outcome using a random effects model. Heterogeneity was assessed by the I2 statistic. Results A total of seven articles with 1864 participants were included in this review. The results showed that the digital cognitive behavioural therapy group demonstrated a statistically significant amelioration in the severity of insomnia symptoms, as well as a reduction in depressive symptomatology compared with the control groups. The post-intervention effect was found to be related to the duration of the intervention and the severity of insomnia before the intervention. Conclusions Digital cognitive behavioural therapy for insomnia application in patients with depression and insomnia was demonstrated to be effective, less time-consuming and more accessible. Relevance to Clinical Practice We may consider incorporating nurses into treatment plans and conducting nurse-led interventions in specific programs. In the future, nurses may be able to provide exclusive digital behavioural therapy for insomnia to patients with depression to achieve greater effectiveness.
Bai et al. (Tue,) studied this question.