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Sunlight Exposure and Vitamin D in Children

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ClinicalTrials.gov Identifier: NCT01477827
Recruitment Status : Completed
First Posted : November 23, 2011
Last Update Posted : January 16, 2013
Information provided by (Responsible Party):
Lesley Rhodes, University of Manchester

November 18, 2011
November 23, 2011
January 16, 2013
June 2010
July 2012   (Final data collection date for primary outcome measure)
Serum concentration of 25-hydroxyvitamin D [ Time Frame: Approximately every 3 months ]
Same as current
Complete list of historical versions of study NCT01477827 on ClinicalTrials.gov Archive Site
  • Amount of sunlight exposure received [ Time Frame: Approx every 3 months ]
    Exposure to sunlight over 7 consecutive days is measured using polysulphone badges with one badge for weekdays and a second badge for the weekend.
  • Dietary intake of vitamin D [ Time Frame: Approximately every 3 months ]
    Intake of foods containing vitamin D is recorded for a one week period and the average daily intake determined.
Same as current
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Sunlight Exposure and Vitamin D in Children
Sunlight Exposure and Vitamin D Status of Children in the UK
The purpose of this study is to examine the amount of sunlight exposure and vitamin D status of adolescent schoolchildren in each season throughout the year.
Not Provided
Observational Model: Cohort
Time Perspective: Prospective
Not Provided
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Non-Probability Sample
Schoolchildren in Greater Manchester
Healthy Schoolchildren
Other: None - observational study
Healthy volunteers
Healthy adolescents aged 12-15 years
Intervention: Other: None - observational study
Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
July 2012
July 2012   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • Healthy school children aged 12-15 years
  • White Caucasian
  • Male or female

Exclusion Criteria:

  • History of photosensitivity disorder
Sexes Eligible for Study: All
12 Years to 15 Years   (Child)
Contact information is only displayed when the study is recruiting subjects
United Kingdom
Bupa Protocol 1
Not Provided
Not Provided
Lesley Rhodes, University of Manchester
University of Manchester
Not Provided
Principal Investigator: Lesley Rhodes, MBBS MD FRCP University of Manchester
University of Manchester
January 2013