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0 0.5 1 1.5 2+ Severe case 47% unadjusted Improvement Relative Risk c19zinc.com Shehab et al. Zinc for COVID-19 Prophylaxis Favors zinc Favors control
Shehab, 253 patient zinc prophylaxis study: 47% lower severe cases [p=0.24] https://c19p.org/shehabz
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Immune-boosting effect of natural remedies and supplements on progress of, and recovery from COVID-19 infection
Shehab et al., Tropical Journal of Pharmaceutical Research, doi:10.4314/tjpr.v21i2.13
28 Feb 2022    Source   PDF   Share   Tweet
Retrospective survey-based analysis of 349 COVID-19 patients, showing a lower risk of severe cases with vitamin D, zinc, turmeric, and honey prophylaxis in unadjusted analysis, without statistical significance. REC/UG/2020/03.
risk of severe case, 47.4% lower, RR 0.53, p = 0.24, treatment 4 of 65 (6.2%), control 22 of 188 (11.7%), NNT 18, unadjusted, severe vs. mild cases.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
This study is excluded in the after exclusion results of meta analysis: unadjusted results with no group details.
Shehab et al., 28 Feb 2022, retrospective, multiple countries, peer-reviewed, survey, 7 authors, study period September 2020 - March 2021.
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