Optimizing Long-Term Outcomes for Winter Depression With CBT-SAD and Light Therapy
Public ClinicalTrials.gov record NCT03691792. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Optimizing Long-Term Outcomes for Winter Depression With CBT-SAD and Light Therapy: Confirming the Targets, Mechanisms, and Treatment Sequence
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Major depression is a highly prevalent, chronic, and debilitating mental health problem with significant social cost that poses a tremendous economic burden. Winter seasonal affective disorder (SAD) is a subtype of recurrent major depression that affects 5% of the population (14.5 million Americans), involving substantial depressive symptoms for about 5 months of each year during most years, beginning in young adulthood.
Study identification
- NCT ID
- NCT03691792
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 141 participants
Conditions and interventions
Conditions
Interventions
- Cognitive-Behavioral Therapy (CBT-SAD) Behavioral
- Light Therapy Other
Behavioral · Other
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Aug 31, 2018
- Primary completion
- Feb 27, 2025
- Completion
- Feb 27, 2025
- Last update posted
- Jun 2, 2025
2018 – 2025
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of Vermont, Psychology Department | Burlington | Vermont | 05405-0134 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03691792, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jun 2, 2025 · Synced Sep 12, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03691792 live on ClinicalTrials.gov.