Comparing CBT to Light Therapy for Winter Depression
Researchers from the Department of Psychology at the University of Vermont in Burlington looked at the recurrence of SAD (seasonal affective disorder or depression) in the fall/winter, one year after receiving cognitive behavioral treatment
The investigators had previously developed a group cognitive-behavioral therapy approach (CBT) specifically targeted for SAD and tested its effectiveness in 2 pilot studies that compared outcomes with light therapy.
This study examines impact during the subsequent winter season (approximately 1 year after acute treatment), following participants randomized to CBT, light therapy, and a combination of both treatments. (N=69).
subjects dropped out during treatment, were withdrawn from their protocol, or
were just lost to follow-up.
Of the remaining subjects, the CBT (7.0%) and combination treatment (5.5%) groups had significantly smaller proportions of winter depression recurrences than the light therapy group (36.7%).
Additionally, CBT alone, but not combination treatment, was also associated with significantly lower interviewer- and patient-rated depression severity at 1 year as compared to light therapy alone.
completers who provided 1-year data, all statistically significant differences
between the CBT and light therapy groups persisted after adjustment for ongoing
treatment with light therapy, antidepressants, and psychotherapy.
Citation: Rohan KJ, Roecklein KA, Lacy TJ, Vacek PM.Winter depression recurrence one year after cognitive-behavioral therapy, light therapy, or combination treatment. Behavioral Therapy. 2009 Sep; 40 (3): pages 225-38. Epub 2008 Nov 3. [email protected]