COVID-19 studies:  C19 studies: C19:  IvermectinIVM Vitamin DV.D HC QHC Q Vitamin CV.C ZincZn PVP-IPVP-I FLVFLV REGNR2 LY-CoVLY RemdesivirRMD
Vitamin D study #31 of 71
10/30 Analysis of outcomes based on serum levels
Abrishami et al., European Journal of Nutrition, doi:10.1007/s00394-020-02411-0 (Peer Reviewed)
Possible association of vitamin D status with lung involvement and outcome in patients with COVID-19: a retrospective study
Source   PDF   Share   Tweet
Retrospective 73 hospitalized patients showing the probability of death in patients with vitamin D deficiency (< 25ng/mL) was 34.6% compared with 6.4% in patients with sufficient vitamin D levels.

Abrishami et al., 10/30/2020, retrospective, Iran, Middle East, peer-reviewed, mean age 55.2, 7 authors.
risk of death, 75.9% lower, RR 0.24, p = 0.04, high D levels 3 of 47 (6.4%), low D levels 9 of 26 (34.6%), adjusted per study, >25ng/mL.

Effect extraction follows pre-specified rules prioritizing more serious outcomes. For an individual study the most serious outcome may have a smaller number of events and lower statistical signficance, however this provides the strongest evidence for the most serious outcomes when combining the results of many trials.
Details of all 71 studies
Please send us corrections, updates, or comments.