Vitamin D levels and associated factors: a population-based study in Switzerland.

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State: Public
Version: Final published version
Serval ID
serval:BIB_6364F33C5A95
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Vitamin D levels and associated factors: a population-based study in Switzerland.
Journal
Swiss Medical Weekly
Author(s)
Guessous I., Dudler V., Glatz N., Theler J.M., Zoller O., Paccaud F., Burnier M., Bochud M.
Working group(s)
Swiss Survey on Salt Group
Contributor(s)
Conen D., Hayoz D., Péchère-Bertschi A., Erne P., Binet I., Greminger P., Muggli F., Gabutti L., Gallino A., Meier P., Suter PM.
ISSN
1424-3997 (Electronic)
ISSN-L
0036-7672
Publication state
Published
Issued date
11/2012
Volume
142
Pages
0
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: epublish
Abstract
QUESTIONS UNDER STUDY: To update the prevalence of vitamin D insufficiency and to identify factors associated with vitamin D status in the Swiss adult population.
METHODS: Data from the 2010-2011 Swiss Study on Salt intake, a population-based study in the Swiss population, was used. Vitamin D concentration in serum was measured by liquid chromatography- tandem mass spectrometry. Major factors that influence vitamin D levels were taken into account. Survey statistical procedures were used to estimate means and prevalences of vitamin D levels and status. Monthly-specific tertiles of vitamin D and ordinal logistic regression were used to determine the associations of covariates of interest with vitamin D status.
RESULTS: The prevalences of vitamin D insufficiency (serum 25-hydroxyvitamin D: 20-29.9 ng/ml) and deficiency (<20 ng/ml) were the highest in the January-March period; 26.4% (95%CI: 21.6-31.7) and 61.6% (95%CI: 56.0-67.0), respectively. In the same period, more than 9 of ten men were vitamin D insufficient or deficient. Each unit increase of Body Mass Index was associated with an 8% decreased likelihood of being in a higher vitamin D tertiles. Oral contraceptive, altitude, urinary excretion of calcium, use of vitamin D supplement or treatment, high wine consumption, physical activity were associated with vitamin D tertiles. Compared to the French-speaking region, the Italian-speaking region was independently associated with a higher likelihood of being in higher vitamin D tertiles (OR: 1.66, 95%CI: 1.14-2.43).
CONCLUSIONS: Low levels of vitamin D are common among Swiss adults, in particular during winter months and outside the Italian-speaking region.
Pubmed
Web of science
Open Access
Yes
Create date
18/01/2013 16:12
Last modification date
20/08/2019 14:20
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