Impact of Work Environment Absent of Natural Light on Vitamin D Levels
NCT ID: NCT01385085
Last Updated: 2011-06-29
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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UNKNOWN
300 participants
OBSERVATIONAL
2011-11-30
Brief Summary
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In addition, each tested worker will be asked to fill a questionnaire for demographic, medical and personal habit information.
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Detailed Description
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Conditions
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Study Design
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CASE_CROSSOVER
CROSS_SECTIONAL
Study Groups
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No natural sunlight
one group works in a basement with no natural sunlight
No interventions assigned to this group
Low level of Natural Sunlight
the second group work in offices with unopenable windows.
No interventions assigned to this group
High level of Natural Sunlight
The third group works outdoors.
No interventions assigned to this group
Eligibility Criteria
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Inclusion Criteria
Exclusion Criteria
* 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.
18 Years
45 Years
ALL
Yes
Sponsors
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Medical Corps, Israel Defense Force
OTHER
Responsible Party
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Occupational Medicine and Medical Classification Branch , IDF
Other Identifiers
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922-2010-IDF-CTIL
Identifier Type: -
Identifier Source: org_study_id
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