Analysis of 2215 intensive care unit patients showing no significant differences with this very late stage use of HCQ. HCQ+AZ mortality relative risk RR 0.96,
p=0.53, HCQ and HCQ+AZ combined RR 1.06,
p=0.409.
Gupta et al., 7/15/2020, retrospective, USA, North America, peer-reviewed, baseline oxygen requirements 87.1%, 34 authors.
risk of death, 6.0% higher, RR 1.06, p = 0.41, treatment 631 of 1761 (35.8%), control 153 of 454 (33.7%).
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.