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HCQ study #4 of 231
3/6 Late treatment study
Chen et al., J. Zhejiang University (Med Sci), doi:10.3785/j.issn.1008-9292.2020.03.03 (Peer Reviewed)
A pilot study of hydroxychloroquine in treatment of patients with common coronavirus disease-19 (COVID-19)
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30 moderate hospitalized cases, all recovered. Time to RNA negative comparable. Less frequent radiological progression with HCQ but not statistically significant. One HCQ patient developed to a severe case. Treatment group 4 years older and with higher incidence of hypertension.

Chen et al., 3/6/2020, Randomized Controlled Trial, China, Asia, peer-reviewed, 14 authors.
risk of radiological progression, 29.0% lower, RR 0.71, p = 0.57, treatment 5 of 15 (33.3%), control 7 of 15 (46.7%).
risk of viral+ at day 7, 100% higher, RR 2.00, p = 1.00, treatment 2 of 15 (13.3%), control 1 of 15 (6.7%).
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