COVID-19 studies:  C19 studies: C19:  IvermectinIVM Vitamin DV.D HC QHC Q Vitamin CV.C ZincZn PVP-IPVP-I REGNREGN LY-CoVLY RemdesivirRMD
Vitamin D study #39 of 50
11/25 Analysis of outcomes based on serum levels
De Smet et al., American Journal of Clinical Pathology, doi:10.1093/ajcp/aqaa252 (Peer Reviewed)
Serum 25(OH)D Level on Hospital Admission Associated With COVID-19 Stage and Mortality
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Retrospective 186 hospitalized patients in Belgium showing that 59% of patients were vitamin D deficient, and that non-vitamin D deficient patients had significantly lower mortality risk, RR 0.26, p = 0.015.

De Smet et al., 11/25/2020, retrospective, Belgium, Europe, peer-reviewed, 5 authors.
risk of death, 70.1% lower, RR 0.30, p = 0.02, treatment 7 of 77 (9.1%), control 20 of 109 (18.3%), adjusted per study, odds ratio converted to relative risk, >20ng/mL.
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