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Vitamin D study #152   Meta Analysis
0 0.25 0.5 0.75 1 1.25 1.5 1.75 2+ Case 12% Imp. Relative Risk, 95% CI Mohseni: Do body mass index (BMI) and history of nutritional supp.. c19vitamind.com/mohseni.html Favors vitamin D Favors control
8/4 Prophylaxis study
Mohseni et al., Nutrition & Food Science, doi:10.1108/NFS-11-2020-0421 (Peer Reviewed)
Do body mass index (BMI) and history of nutritional supplementation play a role in the severity of COVID-19? A retrospective study
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Retrospective 603 patients in Iran, 192 taking vitamin D supplements, showing no significant difference in COVID-19 cases in unadjusted results. IR.SHOUSHTAR.REC.1399.015.
risk of case, 12.4% lower, RR 0.88, p = 0.09, treatment 99 of 192 (51.6%), control 242 of 411 (58.9%).
This study is excluded in the after exclusion results of meta analysis: unadjusted results with no group details.
Mohseni et al., 8/4/2021, retrospective, Iran, Middle East, peer-reviewed, 4 authors, dosage not specified.
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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