Katz, 133,125 patient vitamin D sufficiency study: 78% fewer cases [p=0.001] https://c19p.org/katz
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Increased risk for Covid-19 in patients with Vitamin D deficiency
el al., Nutrition, doi:10.1016/j.nut.2020.111106
Retrospective database analysis showing patients with vitamin D deficiency were 4.6 times more likely to be COVID-19 positive, p<0.001.
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risk of case, 78.4% lower, RR 0.22, p < 0.001, high D levels 85 of 101,175 (0.1%), low D levels 87 of 31,950 (0.3%), NNT 531, adjusted per study.
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| Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates |
Katz et al., 12/4/2020, retrospective, population-based cohort, USA, North America, peer-reviewed, 3 authors.
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