A randomized controlled trial of an internet intervention for adults with insomnia: effects on comorbid psychological
Frances P Thorndike1, Lee M Ritterband, Linda A Gonder-Frederick
1University of Virginia Health System.
Objective:
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.
Method:
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.
Results:
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).
Conclusion:
Internet-delivered CBT-I appears to not only improve sleep but also reduce comorbid psychological and fatigue symptoms.
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