Vitamin D and survival in COVID-19 patients: A quasi-experimental study

Vitamin D study #33 of 126 Meta Analysis

Annweiler et al., The Journal of Steroid Biochemistry and Molecular Biology, doi:10.1016/j.jsbmb.2020.105771 (Peer Reviewed)
Vitamin D and survival in COVID-19 patients: A quasi-experimental study

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Vitamin D3 supplementation during or just before COVID-19 was associated with 68% lower mortality and less severe COVID-19 in frail elderly.

Retrospective 66 French nursing home residents, mean age 87.7, 9 control patients, and 57 that received an oral bolus of 80,000 IU vitamin D3 either in the week following the suspicion or diagnosis of COVID-19, or during the previous month. 17.5% mortality in the treatment group and 55.6% in the control group.

Annweiler et al., 10/13/2020, retrospective, France, Europe, peer-reviewed, mean age 87.7, 6 authors, dosage 80,000IU single dose, 80,000IU either in the week following the suspicion or diagnosis of COVID-19, or during the previous month.

risk of death, 89.0% lower, RR 0.11, p = 0.002, treatment 10 of 57 (17.5%), control 5 of 9 (55.6%), adjusted per study.

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.

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