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NCT01554241 · ClinicalTrials.gov registry record · NA
Optimizing Vitamin D in the Elderly
A NA study, sponsored by University of California, San Francisco.
- Completed
- Registry status
- NA
- Development phase
- 86
- Enrollment target
NCT01554241: Completed NA study, sponsored by University of California, San Francisco.
NCT01554241 is a NA study that has completed, run by University of California, San Francisco. The registered enrollment target is 86 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (94% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT01554241, a NA study, has completed, sponsored by University of California, San Francisco.
- COMPLETED
- Registry status
- NA
- Development phase
- 86 participants
- Enrollment target
Study Summary
Vitamin D deficiency is highly prevalent in older people in the absence of vitamin D supplementation. The limited data available show marked inter-individual variability in response to vitamin D supplementation in very old, frail elderly with almost 25% remaining vitamin D deficient (25-OH D \< 20 ng/mL) when receiving the currently recommended 800 IU/day vitamin D. This proposal is for exploratory research on the use of a wide range of oral vitamin D3 doses in frail elderly living in controlled living environments.
Primary Outcome
circulating total 25-OH vitamin D concentration
Interventions
- DIETARY_SUPPLEMENT D3 2000 IU/day
- DIETARY_SUPPLEMENT D3 4000 IU/day
- DIETARY_SUPPLEMENT D3 50,000 IU weekly
- DIETARY_SUPPLEMENT vitamin D3 800 IU/day
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 86 participants |
| Start Date | 2012-09 |
| Est. Completion | 2014-09 |
| Phase | NA |
What the finished NCT01554241 record still lists
NCT01554241 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 86 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (94% lower).
The record links to 0 conditions, and to 4 interventions - of which D3 2000 IU/day is the first listed.
NCT01554241 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT01554241 about?
NCT01554241 is a clinical study titled "Optimizing Vitamin D in the Elderly". Vitamin D deficiency is highly prevalent in older people in the absence of vitamin D supplementation. The limited data available show marked inter-individual variability in response to vitamin D supplementation in very old, frail elderly with almost 25% remaining vitamin D deficient (25-OH D \< 20 n...
What is the current status of trial NCT01554241?
This trial is currently completed. It is a NA study. The enrollment target is 86 participants. The study started on 2012-09. Estimated completion is 2014-09.
What interventions are being tested in trial NCT01554241?
The interventions under investigation include: D3 2000 IU/day (DIETARY_SUPPLEMENT), D3 4000 IU/day (DIETARY_SUPPLEMENT), D3 50,000 IU weekly (DIETARY_SUPPLEMENT), vitamin D3 800 IU/day (DIETARY_SUPPLEMENT).
Who is sponsoring clinical trial NCT01554241?
This trial is sponsored by University of California, San Francisco, which has 1,713 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT01554241's enrollment target sits among peer trials
86 976th of 2000 higher than 1,021 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
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