# The Influence of Combined Oral Contraception on the DEvelopment and progRession of Chronic venoUs diSeases

> **NCT04451746** · NA · COMPLETED · sponsor: **Clinic of Phlebology and Laser Surgery, Chelyabinsk, Russia** · enrollment: 116 (actual)

## Conditions studied

- Chronic Venous Diseases

## Interventions

- **DRUG:** Combined Oral Contraceptive

## Key facts

- **NCT ID:** NCT04451746
- **Lead sponsor:** Clinic of Phlebology and Laser Surgery, Chelyabinsk, Russia
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2020-06-24
- **Primary completion:** 2026-02-23
- **Final completion:** 2026-02-23
- **Target enrollment:** 116 (ACTUAL)
- **Last updated:** 2026-03-05


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04451746

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04451746, "The Influence of Combined Oral Contraception on the DEvelopment and progRession of Chronic venoUs diSeases". Retrieved via AI Analytics 2026-06-23 from https://api.ai-analytics.org/clinical/NCT04451746. Licensed CC0.

---

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