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HCQ study #291 of 292
4/30 Late treatment study
Bosaeed et al., SSRN (Peer Reviewed)
Favipiravir and Hydroxychloroquine Combination Therapy in Patients with Moderate to Severe COVID-19 (FACCT): An Open-Label, Multicentre, Randomised, Controlled Trial
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RCT 254 very late stage (93% on oxygen, 17% in ICU at baseline) hospitalized patients in Saudi Arabia not showing significant differences with HCQ+favipiravir treatment. Only SaO2 < 94% patients were eligible, however the actual SaO2 of enrolled patients is not provided.

Bosaeed et al., 4/30/2021, Randomized Controlled Trial, Saudi Arabia, Middle East, peer-reviewed, 30 authors.
risk of death, 3.7% lower, RR 0.96, p = 0.91, treatment 14 of 125 (11.2%), control 15 of 129 (11.6%), 90 days.
risk of death, 28.6% lower, RR 0.71, p = 0.45, treatment 9 of 125 (7.2%), control 13 of 129 (10.1%), 28 days.
risk of death, 65.1% higher, RR 1.65, p = 0.45, treatment 8 of 125 (6.4%), control 5 of 129 (3.9%), 14 days.
risk of mechanical ventilation, 8.4% higher, RR 1.08, p = 0.78, treatment 21 of 125 (16.8%), control 20 of 129 (15.5%).
risk of ICU admission, 31.0% higher, RR 1.31, p = 0.24, treatment 33 of 125 (26.4%), control 26 of 129 (20.2%).
recovery time, 28.6% higher, relative time 1.29, p = 0.29, treatment 125, control 129.
hospitalization time, 12.5% higher, relative time 1.12, p = 0.42, treatment 125, control 129.
risk of no virological cure, 2.6% lower, RR 0.97, p = 0.75, treatment 100 of 125 (80.0%), control 106 of 129 (82.2%).

Effect extraction follows pre-specified rules prioritizing more serious outcomes. For an individual study the most serious outcome may have a smaller number of events and lower statistical signficance, however this provides the strongest evidence for the most serious outcomes when combining the results of many trials.
Details of all 292 studies    Meta analysis
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