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Vitamin D study #8 of 69
6/19 Analysis of outcomes based on serum levels
Raisi-Estabragh et al., J. Public Health, doi:10.1093/pubmed/fdaa095 (Peer Reviewed)
Greater risk of severe COVID-19 in Black, Asian and Minority Ethnic populations is not explained by cardiometabolic, socioeconomic or behavioural factors, or by 25(OH)-vitamin D status: study of 1326 cases from the UK Biobank
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UK Biobank retrospective not finding a significant association between vitamin D levels and the risk of PCR+ after adjustment. Since adjustment factors may be correlated with vitamin D deficiency, the extent of any causal contribution of both vitamin D and the adjustment factors is unclear.
There was an ~10 year time period between baseline 25(OH)D measurement and COVID-19 infection. Vitamin D levels may change significantly across seasons and years. People that discovered they had low vitamin D levels may have been encouraged to take steps to correct the deficiency.

Raisi-Estabragh et al., 6/19/2020, peer-reviewed, 9 authors.
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