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Factors Influencing Fertility or Pregnancy Health
NCT04595760 · View on ClinicalTrials.gov ↗
Study Summary
Background: The North Carolina Early Pregnancy Study (EPS) was held from 1982 to 1986. Women who were trying to get pregnant took part in the study. They collected urine samples. They kept diaries. They filled out surveys. They answered questions about their partners. They were asked about their drug use. Data about air pollution and other exposures were also collected. A follow-up study was held from 2010 to 2011. Researchers want to use the data and samples to study factors that affect reproductive success. Objective: To examine behavioral and environmental exposures and reproductive health, such as menstrual cycles, conception, pregnancy loss, and pregnancy outcomes. Eligibility: The 221 healthy women age 21-42 who were planning to get pregnant and took part in the 1982-86 North Carolina EPS at the time they stopped using all birth control. A 2010-11 follow-up included 173 of these women. Design: This study uses existing data. No new data will be collected in this study. Stored urine samples may be used. Data from surveys and other sources will be used. All of the women who gave data and samples will be included. Electronic data is held in secure databases. The data is kept on computers that are password protected. Hard-copy data are stored in locked file cabinets. The study will take place at more than one site. Data will be shared with groups outside the NIH.
Conditions Studied
Study Locations (1)
Maryland
- National Institute of Environmental Health Sciences (NIEHS) — Bethesda
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 231 participants |
| Start Date | 2020-10-19 |
| Est. Completion | 2030-12-31 |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT04595760
The ClinicalTrials.gov registry entry for NCT04595760 describes a study currently listed as active not recruiting. It is categorized as an unspecified phase, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 231 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is National Institute of Environmental Health Sciences (NIEHS), which has 75 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 4 conditions, with Early Pregnancy Loss appearing as the primary indexed condition, and to 0 interventions. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT04595760 reports 1 study location spanning 1 distinct geographic area — top geographies include Maryland. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT04595760 about?
NCT04595760 is a clinical study titled "Factors Influencing Fertility or Pregnancy Health". Background: The North Carolina Early Pregnancy Study (EPS) was held from 1982 to 1986. Women who were trying to get pregnant took part in the study. They collected urine samples. They kept diaries. They filled out surveys. They answered questions about their partners. They were asked about their dr...
What is the current status of trial NCT04595760?
This trial is currently active not recruiting. The enrollment target is 231 participants. The study started on 2020-10-19. Estimated completion is 2030-12-31.
What conditions does trial NCT04595760 study?
This clinical trial studies the following conditions: Early Pregnancy Loss, Pregnancy Outcomes, Menstrual Cycles, Conception. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
Who is sponsoring clinical trial NCT04595760?
This trial is sponsored by National Institute of Environmental Health Sciences (NIEHS), which has 75 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT04595760 being conducted?
This trial has 1 study location across Maryland. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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