ClinicalTrials.gov record

Completed Not applicable Interventional Accepts healthy volunteers Results available

Comparing IM vs. Vaginal Progesterone for Pre-term Birth

ClinicalTrials.gov ID: NCT00579553

Public ClinicalTrials.gov record NCT00579553. 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.

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ClinicalTrials.gov public records Last synced Oct 19, 2026, 1:34 AM EDT

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Official title

Comparing Intramuscular Versus Vaginal Progesterone for Prevention of Preterm Birth.

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This is a randomized controlled trial comparing weekly intramuscular injection of 17 alpha hydroxylprogesterone caproate with daily vaginal progesterone in women with singleton pregnancies and history of prior spontaneous preterm birth in terms of maternal, fetal and neonatal outcomes. Our aim is to assess the effects on maternal, fetal and neonatal outcomes of antenatal progesterone administered intramuscularly versus vaginally in women with singleton pregnancy and a history of prior preterm birth.

Study identification

NCT ID: NCT00579553
Recruitment status: Completed
Study type: Interventional
Phase: Not applicable
Lead sponsor: University of Oklahoma; Other
Enrollment: 174 participants

Conditions and interventions

Conditions

Interventions

Intramuscular Progesterone Drug
Vaginal Progesterone Drug

Drug

Eligibility (public fields only)

Age range: 18 Years to 45 Years
Sex: Female
Healthy volunteers: Accepts healthy volunteers

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date: Oct 2006 (Type not available)
Primary completion: May 2011 (Actual)
Completion: May 2011 (Actual)
Last update posted: May 19, 2021

2006 – 2011

United States locations

U.S. sites: 1
U.S. states: 1
U.S. cities: 1

Facility	City	State	ZIP	Site status
University of Oklahoma Health Sciences Center	Oklahoma City	Oklahoma	73104	—

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 NCT00579553, 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 May 19, 2021 · Synced Oct 19, 2026

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The complete public registry record, listed eligibility criteria, and available contact information for NCT00579553 live on ClinicalTrials.gov.

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