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Vitamin C study #8 of 18
11/30 Late treatment study
Kumari et al., Cureus 12(11): e11779, doi:10.7759/cureus.11779 (Peer Reviewed)
The Role of Vitamin C as Adjuvant Therapy in COVID-19
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RCT 150 hospitalized patients in Pakistan showing 26% faster recovery, p < 0.0001. 36% lower mortality, not statistically significant due to the small number of events. Dosage was 50 mg/kg/day of intravenous vitamin C.

Kumari et al., 11/30/2020, Randomized Controlled Trial, Pakistan, South Asia, peer-reviewed, 10 authors.
risk of death, 36.4% lower, RR 0.64, p = 0.45, treatment 7 of 75 (9.3%), control 11 of 75 (14.7%).
risk of mechanical ventilation, 20.0% lower, RR 0.80, p = 0.67, treatment 12 of 75 (16.0%), control 15 of 75 (20.0%).
recovery time, 26.0% lower, relative time 0.74, p < 0.001, treatment 75, control 75, days to symptom-free.
hospitalization time, 24.3% lower, relative time 0.76, p < 0.001, treatment 75, control 75, days spent in hospital.

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 signficance, however this provides the strongest evidence for the most serious outcomes when combining the results of many trials.
All 18 studies
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