Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.
NCT04123210 · ClinicalTrials.gov registry record · NA
Estimating Average Vitamin A Requirements in Indonesian and American Women
A NA study, sponsored by University of Wisconsin, Madison.
- Completed
- Registry status
- NA
- Development phase
- 70
- Enrollment target
NCT04123210: Completed NA study, sponsored by University of Wisconsin, Madison.
NCT04123210 is a NA study that has completed, run by University of Wisconsin, Madison. The registered enrollment target is 70 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (95% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT04123210, a NA study, has completed, sponsored by University of Wisconsin, Madison.
- COMPLETED
- Registry status
- NA
- Development phase
- 70 participants
- Enrollment target
Study Summary
Women of reproductive age had their vitamin A stores estimated by retinol isotope dilution and then were given vitamin A supplements near the US vitamin A RDA or placebo for 42(USA) or 60 (Indonesia) days, after which retinol isotope dilution was repeated and the change in vitamin A stores was determined in each group to estimate how much vitamin A is needed to maintain nutrient balance in these women.
Primary Outcome
Change in total body stores of vitamin A before and after intervention, measured by retinol isotope dilution
Interventions
- DIETARY_SUPPLEMENT Placebo
- DIETARY_SUPPLEMENT Vitamin A supplement
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 70 participants |
| Start Date | 2008-03-17 |
| Est. Completion | 2009-05-05 |
| Phase | NA |
What the finished NCT04123210 record still lists
NCT04123210 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 70 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (95% lower).
The record links to 0 conditions, and to 2 interventions - of which Placebo is the first listed.
NCT04123210 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT04123210 about?
NCT04123210 is a clinical study titled "Estimating Average Vitamin A Requirements in Indonesian and American Women". Women of reproductive age had their vitamin A stores estimated by retinol isotope dilution and then were given vitamin A supplements near the US vitamin A RDA or placebo for 42(USA) or 60 (Indonesia) days, after which retinol isotope dilution was repeated and the change in vitamin A stores was deter...
What is the current status of trial NCT04123210?
This trial is currently completed. It is a NA study. The enrollment target is 70 participants. The study started on 2008-03-17. Estimated completion is 2009-05-05.
What interventions are being tested in trial NCT04123210?
The interventions under investigation include: Placebo (DIETARY_SUPPLEMENT), Vitamin A supplement (DIETARY_SUPPLEMENT).
Who is sponsoring clinical trial NCT04123210?
This trial is sponsored by University of Wisconsin, Madison, which has 1,039 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT04123210's enrollment target sits among peer trials
70 1103rd of 2000 higher than 868 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
Nationwide trials with similar profiles
Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.
Similar enrollment target
- NCT00969111 · 70 participants · NA
Postoperative or Salvage Radiotherapy (RT) for Node Negative Prostate Cancer Following Radical Prostatectomy
- NCT01712620 · 70 participants · Phase 2
Spironolactone for Pulmonary Arterial Hypertension
- NCT02143830 · 70 participants · Phase 2
HSCT for Patients With Fanconi Anemia Using Risk-Adjusted Chemotherapy
- NCT02601339 · 70 participants
NIRS Monitoring in Premature Infants
Similar registry start date
- NCT05962346 · started 2026-12 · NA
Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia
- NCT07125183 · started 2026-12 · Phase 2
Study on Efficacy and Tolerability of Weekly Doxorubicin in Elderly Patients With Advanced or Metastatic Leiomyosarcoma
- NCT07292298 · started 2026-11 · Phase 2
Phase 2 Single-Arm Rectal Cancer Brachytherapy for Patients With Low-Lying Residual Adenocarcinoma After Total Neoadjuvant Therapy to Improve Organ Preservation Rates
- NCT04263285 · started 2026-10 · NA
Treatment of Depression Post-SCI