et al., Postgraduate Medical Journal, doi:10.1136/postgradmedj-2020-139065 (Peer Reviewed)
53% reduction in PCR+ with high-dose cholecalciferol supplementation. RCT with 16 treatment patients and 24 control patients.
Relative risk of PCR+ at 2 weeks with treatment, RR 0.47, p
25(OH)D levels at day 14 were 52 ng/ml vs. 15 ng/ml in the intervention and control group.
Rastogi et al., 11/12/2020, Randomized Controlled Trial, India, South Asia, peer-reviewed, 8 authors, dosage 60,000IU days 1-7.
risk of no virological cure, 52.6% lower, RR 0.47, p = 0.02, treatment 6 of 16 (37.5%), control 19 of 24 (79.2%).
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.