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Vitamin D study #89   Meta Analysis
0 0.25 0.5 0.75 1 1.25 1.5 1.75 2+ Severe case 69% Imp. Relative Risk, 95% CI Basaran: The relationship between vitamin D and the severity of C.. c19vitamind.com/basaran2.html Favors vitamin D Favors control
2/12 Analysis of outcomes based on serum levels
Basaran et al., Bratislava Medical Journal, doi:10.4149/bll_2021_034 (Peer Reviewed)
The relationship between vitamin D and the severity of COVID-19
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Prospective study of 204 patients with COVID-19-like pneumonia in Turkey, 42 outpatients (mild cases), and 162 inpatients (serious cases), showing significantly higher risk of severe cases with vitamin D deficiency.
risk of severe case, 68.6% lower, RR 0.31, p = 0.005, high D levels 82 of 119 (68.9%), low D levels 80 of 85 (94.1%), odds ratio converted to relative risk, >10μg/L, per standard deviation increase in levels.
Basaran et al., 2/12/2021, retrospective, Turkey, Europe, peer-reviewed, 6 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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