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Vitamin D study #51 of 71
12/28 Late treatment study
Jevalikar et al., Research Square, doi:10.21203/ (Preprint)
Lack of Association of Baseline 25-Hydroxyvitamin D Levels and Cholecalciferol Treatment With Disease Severity and Mortality in Indian Patients Hospitalized for Covid-19
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Prospective study of 410 hospitalized patients in India showing lower mortality and ICU admission with cholecalciferol treatment, although not statistically significant with the small number of cases. The median total dose was 60000IU.
No significant difference was found for outcomes based on baseline vitamin D deficiency, however this analysis does not appear to account for the deficient patients that were treated with vitamin D.

Jevalikar et al., 12/28/2020, prospective, India, South Asia, preprint, 8 authors, dosage 60,000IU single dose, median total dose.
risk of death, 82.0% lower, RR 0.18, p = 0.12, treatment 1 of 128 (0.8%), control 3 of 69 (4.3%).
risk of ICU admission, 33.7% lower, RR 0.66, p = 0.29, treatment 16 of 128 (12.5%), control 13 of 69 (18.8%).
risk of oxygen therapy, 31.7% lower, RR 0.68, p = 0.06, treatment 38 of 128 (29.7%), control 30 of 69 (43.5%).

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.
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