Retrospective 152 mechanically ventilated patients in the USA showing unadjusted lower mortality with vitamin C, vitamin D, HCQ, and zinc treatment, statistically significant only for vitamin C.
risk of death, 17.6% lower, RR 0.82, p = 0.18, treatment 31 of 58 (53.4%), control 61 of 94 (64.9%), NNT 8.7.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
This study is excluded in the after exclusion results of meta
unadjusted results with no group details.
Krishnan et al., 20 Jul 2020, retrospective, USA, peer-reviewed, 13 authors.