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A Network Intervention Analysis: Exploring Patterns Of Symptom Change Over Winter Depression Treatment With Cognitive-Behavioral Therapy Vs. Light Therapy, Richard J. Norton

Graduate College Dissertations and Theses

This is an exploratory network intervention analysis (NIA) of a larger randomized controlled trial comparing two first-line treatments for winter seasonal affective disorder (SAD): light therapy (LT) and group cognitive-behavioral therapy for SAD (CBT-SAD). Of 177 adults with SAD randomized in the parent study, this study included the 159 participants (88 LT, 75 CBT-SAD) who completed treatment. NIA was applied to examine the relation of treatment type to changes in four previously identified symptom clusters on the Beck-Depression Inventory-II extended version. There were no differences between LT and CBT-SAD in the magnitude of symptom cluster score changes in the interval …