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All Studies   Meta Analysis   Recent: 
0 0.5 1 1.5 2+ Severe case 31% Improvement Relative Risk Severe case (b) 40% Severe case (c) 0% c19vitamind.com Levitus et al. Vitamin D for COVID-19 Prophylaxis Favors vitamin D Favors control
Levitus, 129 patient vitamin D prophylaxis study: 31% lower severe cases [p=0.25] https://c19p.org/levitus
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The Effect of Vitamin D Supplementation on Severe COVID-19 Outcomes in Patients With Vitamin D Insufficiency
Levitus et al., Journal of the Endocrine Society, doi: 10.1210/jendso/bvab048.567
3 May 2021    Source   PDF   Share   Tweet
Retrospective 129 hospitalized patients with vitamin D levels measured within 90 days prior to admission, showing lower, but not statistically significant, risk of severe cases with vitamin D supplementation among patients with levels <20ng/mL or <12ng/mL. For <30ng/mL, lower (but not statistically significant) risk was seen overall but not for ≥50,000IU (the sample size is not given, it may be extremely small for this case). Only minimal details for <30ng/mL are provided, and no details for <20ng/mL or <12ng/mL are provided. The potential effect of supplementation on the risk of a case severe enough for hospitalization is not included.
risk of severe case, 30.8% lower, RR 0.69, p = 0.25, treatment 65, control 64, odds ratio converted to relative risk, ≥1,000IU, control prevalence approximated with overall prevalence.
risk of severe case, 40.0% lower, RR 0.60, p = 0.15, treatment 65, control 64, odds ratio converted to relative risk, ≥5,000IU, control prevalence approximated with overall prevalence.
risk of severe case, no change, RR 1.00, p = 0.92, treatment 65, control 64, odds ratio converted to relative risk, ≥50,000IU, control prevalence approximated with overall prevalence.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Levitus et al., 3 May 2021, retrospective, USA, peer-reviewed, 9 authors, dosage varies.
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