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Proposal and Validation of a Quick Question to Rate the Influence of Sun Exposure in Geriatric Epidemiological Studies on Vitamin D

Abstract :

Background: Vitamin D is synthesized in the skin under the action of solar ultraviolet-B radiation. The objective of this study was to determine whether a simple question exploring sun exposure ("When weather is nice, do you stay more than 15 minutes exposed to the sun (face and hands uncovered) between 11am and 3pm?") could be associated with serum 25-hydroxyvitamin D status among 751 older community-dwelling women (mean age, 80.2 3.5 years). Methods: Two groups were distinguished based on the binary "Yes" versus "No" answer. Hypovitaminosis D was defined as serum 25-hydroxyvitamin D<30 ng/mL. Results: Fewer women with hypovitaminosis D answered "Yes" to the question on sun exposure (p=0.042). Answering "Yes" was inversely associated with hypovitaminosis D (OR=0.56, p=0.049) after adjustment for demographic characteristics and exogenous sources of vitamin D, with a positive predictive value of 88%. Conclusion: This simple question may reflect the sun's influence on vitamin D status and identify older community-dwellers with hypovitaminosis D.

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https://hal.univ-angers.fr/hal-03355560
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Soumis le : lundi 27 septembre 2021 - 14:11:34
Dernière modification le : mercredi 27 avril 2022 - 04:48:12

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Cédric Annweiler, Anne-Marie Schott, Olivier Beauchet. Proposal and Validation of a Quick Question to Rate the Influence of Sun Exposure in Geriatric Epidemiological Studies on Vitamin D. International Journal for Vitamin and Nutrition Research, Hogrefe, 2012, 82 (6), pp.412-416. ⟨10.1024/0300-9831/A000139⟩. ⟨hal-03355560⟩

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