Mean Vitamin D levels in 19 European Countries & COVID-19 Mortality over 10 months

Vitamin D study #90 of 131 Meta Analysis

3/12 Analysis of outcomes based on serum levels

Ahmad et al., medRxiv, doi:10.1101/2021.03.11.21253361 (Preprint)
Mean Vitamin D levels in 19 European Countries & COVID-19 Mortality over 10 months

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Retrospective 19 European countries showing countries with mean vitamin D levels > 50nmol/L have a 2.2 times lower risk of mortality (p = 0.032) compared to those with mean levels < 50 nmol/L.

Ahmad et al., 3/12/2021, preprint, 4 authors.

risk of death, 53.6% lower, RR 0.46, p = 0.03, >50nmol/L.

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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