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Abstract
Insomnia and depression are prevalent and co-occurring conditions that are associated with significant impairment of life. Previous research indicates that cognitive-behavioral interventions for insomnia (CBT-I) can improve both insomnia and depressive symptoms. The aim of the authors in this study was to determine whether a multi-component behavioral intervention (MCI) improved both insomnia and depressive symptoms in persons presenting with insomnia and high levels of depression. The sample consisted of 321 individuals with insomnia who participated in a trial of insomnia treatments; 106 participants had high levels of depression (score ≥ 16 on CES-D) at baseline. Participants either received the MCI or a control treatment (sleep education and hygiene booklet). At post-test, participants with high and low levels of depressive symptoms showed significant improvement in insomnia symptoms. Those with high depression also had significant reductions in depressive symptoms. It can be concluded that for individuals with depression and insomnia, CBT-I is a viable intervention for managing depressive symptoms, which complements other approaches for treating depression.