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 #3 of 54
4/28 Analysis of outcomes based on serum levels
Lau et al., medRxiv, doi:10.1101/2020.04.24.20075838 (Preprint)
Vitamin D Insufficiency is Prevalent in Severe COVID-19
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Analysis of 20 hospitalized COVID-19 patients, 13 requiring ICU admission. 84.6% of the ICU patients had low vitamin D levels versus 57.1% of the non-ICU patients.

Lau et al., 4/28/2020, retrospective, USA, North America, preprint, 7 authors.
risk of ICU admission, 45.0% lower, RR 0.55, p = 0.29, treatment 2 of 5 (40.0%), control 11 of 15 (73.3%), >30ng/mL.
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