Retrospective, 550 critically ill patients. 19% fatality for HCQ versus 47% for non-HCQ, RR 0.395,
p=0.002.
The levels of inflammatory cytokine IL-6 were significantly reduced from 22.2 pg/mL to 5.2 pg/mL (
p<0.05) at the end of the treatment in the HCQ group but there was no change in the control group.
Yu et al., 5/15/2020, retrospective, China, Asia, peer-reviewed, 8 authors.
risk of death, 60.5% lower, RR 0.40, p = 0.002, treatment 9 of 48 (18.8%), control 238 of 502 (47.4%).