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c19early.org COVID-19 treatment researchVitamin DVitamin D (more..)
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All Studies   Meta Analysis   Recent:  
0 0.5 1 1.5 2+ Case 27% Improvement Relative Risk Vitamin D for COVID-19  Lázaro et al.  Prophylaxis Does vitamin D reduce COVID-19 infections? Retrospective 239 patients in Spain Study underpowered to detect differences c19early.org Lázaro et al., Endocrine Abstracts, Sep 2021 Favors vitamin D Favors control

Vitamin D deficit in type 2 diabetes patients during COVID-19 lockdown with and without supplementation

Lázaro et al., Endocrine Abstracts, doi:10.1530/endoabs.70.EP552
Sep 2021  
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Analysis of 239 consecutive diabetic patients, 97 taking vitamin D supplements, showing significantly higher vitamin D levels in supplemented patients. There was no statistically significant difference in cases based on supplementation, with only 3 cases total.
This is the 52nd of 116 COVID-19 controlled studies for vitamin D, which collectively show efficacy with p<0.0000000001 (1 in 38 sextillion). 28 studies are RCTs, which show efficacy with p=0.0000081. This study is excluded in the after exclusion results of meta analysis: very few events; unadjusted results with no group details; minimal details provided.
risk of case, 26.8% lower, RR 0.73, p = 1.00, treatment 1 of 97 (1.0%), control 2 of 142 (1.4%), NNT 265.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Lázaro et al., 5 Sep 2021, retrospective, Spain, preprint, 9 authors, dosage not specified.
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