# An Epidemiology Study of Treatment Resistant Depression in the United States (US)

> **NCT03109002** · — · COMPLETED · sponsor: **Janssen Research & Development, LLC** · enrollment: 200000 (actual)

## Conditions studied

- Depressive Disorder, Treatment-Resistant

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT03109002
- **Lead sponsor:** Janssen Research & Development, LLC
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2017-01-15
- **Primary completion:** 2017-05-18
- **Final completion:** 2017-05-18
- **Target enrollment:** 200000 (ACTUAL)
- **Last updated:** 2025-04-27


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03109002

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03109002, "An Epidemiology Study of Treatment Resistant Depression in the United States (US)". Retrieved via AI Analytics 2026-05-24 from https://api.ai-analytics.org/clinical/NCT03109002. Licensed CC0.

---

*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*