Retrospective 175 ICU patients, 113 treated with a single dose of 300,000IU intramuscular cholecalciferol, showing lower mortality with treatment, but not reaching statistical significance. Calcifediol or calcitriol, which avoids several days delay in conversion, may be more successful, especially with this very late stage usage.
Güven et al., 7/23/2021, retrospective, Turkey, Europe, peer-reviewed, 2 authors, dosage 300,000IU single dose.
risk of death, 24.8% lower, RR 0.75, p = 0.32, treatment 43 of 113 (38.1%), control 30 of 62 (48.4%), odds ratio converted to relative risk.
This study is excluded in the after exclusion results of meta analysis: very late stage, ICU patients.
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.