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Vitamin D study #137   Meta Analysis
0 0.25 0.5 0.75 1 1.25 1.5 1.75 2+ Mortality 46% Imp. Relative Risk, 95% CI Zelzer: Vitamin D Metabolites and Clinical Outcome in Hospitaliz.. c19vitamind.com/zelzer.html Favors vitamin D Favors control
6/22 Analysis of outcomes based on serum levels
Zelzer et al., Nutrients, doi:10.3390/nu13072129 (Peer Reviewed)
Vitamin D Metabolites and Clinical Outcome in Hospitalized COVID-19 Patients
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Retrospective 148 patients in Austria, showing no statistically significant differences in vitamin D levels and metabolites for mortality or respiratory support.
risk of death, 46.4% lower, RR 0.54, p = 0.08, high D levels 24 of 121 (19.8%), low D levels 10 of 27 (37.0%), >30nmol/L.
Zelzer et al., 6/22/2021, retrospective, Austria, Europe, peer-reviewed, 7 authors.
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 significance, however this provides the strongest evidence for the most serious outcomes when combining the results of many trials.
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