Retrospective 4666 people with autoimmune or inflammatory conditions, showing HCQ adjusted risk of COVID-19 OR 0.91 [0.68-1.23]. Results are not adjusted for the significantly different risk of COVID-19 depending on the type and severity of autoimmune or inflammatory condition.
risk of case, 8.5% lower, RR 0.91, p = 0.54, treatment 65 of 1,072 (6.1%), control 200 of 3,594 (5.6%), adjusted per study, odds ratio converted to relative risk.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
This study is excluded in the after exclusion results of meta
not fully adjusting for the baseline risk differences within systemic autoimmune patients.
Fitzgerald et al., 5 Feb 2021, retrospective, USA, preprint, 34 authors.