Retrospective 91 hospitalized patients, 36 treated with high-dose cholecalciferol, showing lower combined death/ICU admission with treatment.
Authors also analyze the relationship with comorbidity burden, finding that the positive effect of high-dose cholecalciferol on the combined endpoint was significantly amplified with increasing comorbidity burden.
Giannini et al., 1/14/2021, retrospective, Italy, Europe, peer-reviewed, 21 authors, dosage 200,000IU days 1-2.
risk of combined death/ICU, 36.6% lower, RR 0.63, p = 0.13, treatment 14 of 36 (38.9%), control 29 of 55 (52.7%), odds ratio converted to relative risk.
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.