Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.
NCT00780247 · ClinicalTrials.gov registry record
Environmental Influences on Vitamin D Status
A clinical trial, sponsored by Creighton University.
- Completed
- Registry status
- 50
- Enrollment target
NCT00780247: Completed study, sponsored by Creighton University.
NCT00780247 is a clinical trial that has completed, run by Creighton University. The registered enrollment target is 50 participants. According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT00780247 has completed, sponsored by Creighton University.
- COMPLETED
- Registry status
- 50 participants
- Enrollment target
Study Summary
Vitamin D deficiency is a common problem. The principal source of vitamin D for humans is solar exposure, with cutaneous synthesis of vitamin D by photoconversion of 7-dehydrocholesterol in the skin to pre-vitamin D3. Latitude, altitude, season, skin pigmentation, and age are recognized factors that influence how much vitamin D can be made by solar exposure. However, the relative influences of each are largely unknown and we cannot reliably answer the question of how much sun exposure an individual needs at various latitudes and at various seasons in order to ensure normal vitamin D status.
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 50 participants |
| Start Date | 2008-07 |
| Est. Completion | 2008-08 |
What the finished NCT00780247 record still lists
NCT00780247 is an observational study that tracks outcomes without assigning an intervention. The registry caps enrollment at 50 participants, a relatively small participant target.
The record links to 0 conditions, and to 0 interventions.
NCT00780247 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT00780247 about?
NCT00780247 is a clinical study titled "Environmental Influences on Vitamin D Status". Vitamin D deficiency is a common problem. The principal source of vitamin D for humans is solar exposure, with cutaneous synthesis of vitamin D by photoconversion of 7-dehydrocholesterol in the skin to pre-vitamin D3. Latitude, altitude, season, skin pigmentation, and age are recognized factors that...
What is the current status of trial NCT00780247?
This trial is currently completed. The enrollment target is 50 participants. The study started on 2008-07. Estimated completion is 2008-08.
Who is sponsoring clinical trial NCT00780247?
This trial is sponsored by Creighton University, which has 98 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
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
- NCT00200889 · 50 participants · Early Phase 1
Mapping Auricular Vagus Nerve Circuitry
- NCT00409435 · 50 participants · Phase 2
A Study of Pyridostigmine in Postural Tachycardia Syndrome
- NCT01202305 · 50 participants
The Use of Lymph Node Biopsies to Support HIV Pathogenesis Studies
- NCT01225913 · 50 participants · Phase 4
Mechanism(s) of Airflow Limitation During Exacerbation of Asthma
Similar registry start date
- NCT05988463 · started 2027-01-01 · Phase 1
Dose-Escalation Study of Artesunate Patients With IPF
- NCT07219706 · started 2026-12-10 · NA
Dietary Fiber and Time Restricted Eating
- NCT02831335 · started 2026-12-01
Technical Development of Multi-Parametric Renocerebral MRI
- NCT05962346 · started 2026-12 · NA
Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia