Prospective PSM study of 51 COVID-19 ICU patients in Croatia and 51 matched controls, showing significantly lower mortality with treatment.
risk of death, 42.0% lower, RR 0.58, p = 0.03, treatment 30 of 51 (58.8%), control 39 of 51 (76.5%), adjusted per study, propensity score matching.
Calusic et al., 11/1/2021, prospective, propensity score matching, Croatia, Europe, peer-reviewed, 7 authors.
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.