Prevalence and trends of vitamin D deficiency in a Saudi Arabian population: a five-years retrospective study from 2017 to 2021.

Front Public Health · 2025 · PMC12066668 · PMID 40356842

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a decreasing trendno p-value reported

On the other hand, the proportion of severe deficiency was observed with a decreasing trend from the year 2017 to 2020 in both men and women (2017 [6.9 and 7.7], 2018 [2.9 and 5.7], 2019 [0.5 and 0.7], 2020 [0.3 and 0.4]).

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an increasing trendno p-value reported

The overall trend of annual mean serum 25 (OH)D concentration measured from 2017 to 2020 showed an increasing trend (20.87 to 31.36) but a decline was observed between 2020 and 2021 (31.36 to 26.32 ng/mL) and the same trend was observed in both sexes.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.