Clinical characteristics of 17 patients with COVID-19 and systemic autoimmune diseases: a retrospective study
et al., Annals of the Rheumatic Diseases 2020:79, 1163-1169,
Analysis of 1255 COVID-19 patients in Wuhan Tongji Hospital finding 0.61% with systemic autoimmune diseases, much lower than authors expected (3%-10%). Authors hypothesise that protective factors, such as CQ/HCQ use, reduce hospitalization.
risk of hospitalization, 80.0% lower, RR 0.20, p < 0.001, treatment 8, control 1,247.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
This study is excluded in the after exclusion results of meta
significant unadjusted confounding possible.
Huang et al., 16 Jun 2020, retrospective, China, peer-reviewed, 15 authors.