Retrospective 120 hospitalized patients showing zinc deficiency associated with higher ICU admission.
Berrocal et al., 10/26/2020, retrospective, Spain, Europe, preprint, 7 authors.
risk of death, 44.8% lower, RR 0.55, p = 0.23, treatment 5 of 31 (16.1%), control 26 of 89 (29.2%), ≥84 mcg/dL.
risk of ICU admission, 53.0% lower, RR 0.47, p = 0.003, treatment 9 of 31 (29.0%), control 55 of 89 (61.8%), ≥84 mcg/dL.
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.