Vitamin D DeficiencyNCT01385085
Impact of Work Environment Absent of Natural Light on Vitamin D Levels
An observational study of Vitamin D Deficiency, run by Medical Corps, Israel Defense Force.
Trial summary
Three types of workers exposed to different levels of natural sunlight will be tested for Vitamin D blood level, PTH, Ca, P, albumin and alkaline phosphatase. In addition, each tested worker will be asked to fill a questionnaire for demographic, medical and personal habit information. Read more about this study
- Who is it for?
- Ages 18 to 45 yearsHealthy volunteers can take part
- Conditions the study is for
- Vitamin D Deficiency
- How many people
- 300 participants
- Where
- No sites listed yet
- Study dates
- Nov 2011to not given
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 45 years
- All sexes
- Healthy volunteers accepted
- Adult
Study population: People employed in three types of natural sunlight exposure.
Who may be able to join
- people employed in their current work place at least 6 months,
Who cannot join
- people who consume food additives containing Vitamin D.
- people who have a chronic illness which harms the Vitamin D absorption, such as Celiac, chronic Pancreatitis, Cystic Fibrosis and IBS.
- people who have a chronic illness which harms Vitamin D metabolism, such as chronic hepatitis, kidney insufficiency and Nephrotic Syndrome.
- pregnant women.
- people who require prescribed medicine like steroids, anti-convulsion, and HIV treatments.
About this study
Three types of workers exposed to different levels of natural sunlight will be tested for Vitamin D blood level, PTH, Ca, P, albumin and alkaline phosphatase.
In addition, each tested worker will be asked to fill a questionnaire for demographic, medical and personal habit information.
- Conditions
- Vitamin D Deficiency
- Keywords
- Vitamin D, Sunlight, Deficiency
- Medical subject headings
- Vitamin D Deficiency
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| No natural sunlight | one group works in a basement with no natural sunlight | |
| Low level of Natural Sunlight | the second group work in offices with unopenable windows. | |
| High level of Natural Sunlight | The third group works outdoors. |
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted29 Jun 2011 (estimated)
- Study startNov 2011
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Vitamin D DeficiencyStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case crossover
- Time perspective
- Cross-sectional
- Enrolment
- 300 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Medical Corps, Israel Defense Force
- Sponsor type
- University, hospital or other
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01385085
- Sponsor's protocol ID
- 922-2010-IDF-CTIL
- Status last verified
- Jun 2011
- First submitted
- 28 Jun 2011
- Last updated
- 29 Jun 2011
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 29 Jun 2011. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Impact of Work Environment Absent of Natural Light on Vitamin D Levels
- ClinicalTrials.gov ID
- NCT01385085
- Acronym / sponsor ID
- 922-2010-IDF-CTIL
- Conditions
- Vitamin D Deficiency
- Keywords
- Vitamin D, Sunlight, Deficiency
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 300 participants (estimated)
- Lead sponsor
- Medical Corps, Israel Defense ForceUniversity, hospital or other
- Study start
- Nov 2011
- First posted
- 29 Jun 2011 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Three types of workers exposed to different levels of natural sunlight will be tested for Vitamin D blood level, PTH, Ca, P, albumin and alkaline phosphatase.
In addition, each tested worker will be asked to fill a questionnaire for demographic, medical and personal habit information.
Study design
- Observational model
- Case crossover
- Time perspective
- Cross-sectional
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| No natural sunlight | – | –one group works in a basement with no natural sunlight |
| Low level of Natural Sunlight | – | –the second group work in offices with unopenable windows. |
| High level of Natural Sunlight | – | –The third group works outdoors. |
Who may qualify
- Ages
- 18 to 45 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
- Study population
- People employed in three types of natural sunlight exposure.
Key inclusion criteria (1 listed)
- people employed in their current work place at least 6 months,
Key exclusion criteria (5 listed)
- people who consume food additives containing Vitamin D.
- people who have a chronic illness which harms the Vitamin D absorption, such as Celiac, chronic Pancreatitis, Cystic Fibrosis and IBS.
- people who have a chronic illness which harms Vitamin D metabolism, such as chronic hepatitis, kidney insufficiency and Nephrotic Syndrome.
- pregnant women.
- people who require prescribed medicine like steroids, anti-convulsion, and HIV treatments.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Not reported in the source record.
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 29 Jun 2011.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
An observational study of Vitamin D Deficiency, run by Medical Corps, Israel Defense Force.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 29 Jun 2011. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 29 Jun 2011.