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Screening for vitamin D deficiency in a tropical area: results of a sun exposure questionnaire.


ABSTRACT: BACKGROUND:Vitamin D deficiency is pandemic while resources available to measure 25-hydroxyvitamin D (25OHD) are limited. The present study aimed to verify whether sun exposure measured by a structured questionnaire could predict serum 25OHD concentrations in healthy Caucasian individuals living in a tropical area. METHODS:A cross-sectional study was carried out in subjects living in the greater São Paulo area, Brazil. Two groups of 50 young (20 to 40 years old) and 50 older (60 to 80 years old) subjects (N =?200) answered a structured questionnaire on sun exposure and had blood samples drawn for serum 25OHD concentration measurement during both summer and winter. Anthropometric data were also recorded. Correlation between the questionnaire variables (duration of sun exposure, amount of exposed skin, total sun exposure score - TSES and other data) and serum 25OHD concentration was evaluated. RESULTS:Mean serum 25OHD concentration was 17.60?±?7.3 ng/mL with no difference between age groups (p =?0.293). TSES weakly correlated with serum 25OHD levels (r =?0.264; p 

SUBMITTER: Bittar FB 

PROVIDER: S-EPMC6029128 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature

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Screening for vitamin D deficiency in a tropical area: results of a sun exposure questionnaire.

Bittar Fernanda Barros FB   Castro Charlles H M CHM   Szejnfeld Vera Lúcia VL  

BMC endocrine disorders 20180703 1


<h4>Background</h4>Vitamin D deficiency is pandemic while resources available to measure 25-hydroxyvitamin D (25OHD) are limited. The present study aimed to verify whether sun exposure measured by a structured questionnaire could predict serum 25OHD concentrations in healthy Caucasian individuals living in a tropical area.<h4>Methods</h4>A cross-sectional study was carried out in subjects living in the greater São Paulo area, Brazil. Two groups of 50 young (20 to 40 years old) and 50 older (60 t  ...[more]

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