A randomized controlled trial of an internet intervention for adults with insomnia: effects on comorbid psychological and fatigue symptoms.

Publication Type:

Journal Article


J Clin Psychol, Volume 69, Issue 10, p.1078-93 (2013)


Adult, Anxiety, Cognitive Therapy, Comorbidity, Depression, Fatigue, Female, Humans, Internet, Male, Mental Disorders, Middle Aged, Quality of Life, Sleep Initiation and Maintenance Disorders, Telemedicine, Treatment Outcome


<p><b>OBJECTIVE: </b>Insomnia is frequently comorbid with other medical and psychological disorders. This secondary data analysis investigated whether an Internet-delivered cognitive behavioral therapy for insomnia (CBT-I) intervention could also reduce comorbid psychological and fatigue symptoms.</p><p><b>METHOD: </b>Data from a pilot randomized controlled trial (RCT) testing the efficacy of Internet-delivered CBT-I relative to a waitlist control was used to examine changes in symptoms of depression, anxiety, mental health quality of life (QOL), and fatigue.</p><p><b>RESULTS: </b>Group by time interactions from repeated measures analyses revealed significant post intervention improvements in Internet participants (n = 22) relative to control participants (n = 22) on all psychological symptoms, mental health QOL, and fatigue. A small post hoc subsample of Internet participants with mild or moderate depression also showed large effect size changes in these constructs (depression, anxiety, mental health QOL, and fatigue).</p><p><b>CONCLUSION: </b>Internet-delivered CBT-I appears to not only improve sleep but also reduce comorbid psychological and fatigue symptoms.</p>

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