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0 0.5 1 1.5 2+ Progression -251% Improvement Relative Risk Case 6% c19hcq.com Huh et al. HCQ for COVID-19 PrEP Favors HCQ Favors control
Huh, 44,046 patient HCQ prophylaxis study: 251% higher progression [p=0.11] and 6% fewer cases [p=0.82] https://c19p.org/huh2
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Association of prescribed medications with the risk of COVID-19 infection and severity among adults in South Korea
Huh et al., International Journal of Infectious Diseases, doi:10.1016/j.ijid.2020.12.041
19 Dec 2020    Source   PDF   Share   Tweet
Retrospective database analysis with 17 cases for existing HCQ users and 5 severe cases, showing no significant difference for cases and higher risk for severe cases. However, HCQ users are likely systemic autoimmune disease patients and authors do not adjust for the very different baseline risk for these patients. Other research shows that the risk of COVID-19 for systemic autoimmune disease patients is much higher overall, Ferri et al. show OR 4.42, p<0.001 [Ferri].
risk of progression, 251.0% higher, RR 3.51, p = 0.11, treatment 5 of 8 (62.5%), control 873 of 2,797 (31.2%), adjusted per study, multivariate.
risk of case, 6.0% lower, RR 0.94, p = 0.82, treatment 17 of 122 (13.9%), control 7,324 of 43,924 (16.7%), adjusted per study, multivariate.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
This study is excluded in the after exclusion results of meta analysis: not fully adjusting for the different baseline risk of systemic autoimmune patients.
Huh et al., 12/19/2020, retrospective, database analysis, South Korea, Asia, peer-reviewed, 8 authors.
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