Hydroxychloroquine for SARS-CoV-2 positive patients quarantined at home: The first interim analysis of a remotely conducted randomized clinical trial

2/26 Early treatment study

Amaravadi et al., medRxiv, doi:10.1101/2021.02.22.21252228 (Preprint)
Hydroxychloroquine for SARS-CoV-2 positive patients quarantined at home: The first interim analysis of a remotely conducted randomized clinical trial

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Tiny early-terminated 34 patient RCT for outpatient treatment showing faster recovery with treatment (not statistically significant). All patients recovered (3 control patients recovered after crossover to the treatment arm). There was no mortality and only one hospitalization on day 0 before treatment. There were no severe adverse events.

Amaravadi et al., 2/26/2021, Double Blind Randomized Controlled Trial, USA, North America, preprint, 20 authors, dosage 400mg bid days 1-14.

risk of not reaching lowest symptom score at day 7 mid-recovery, 60.0% lower, RR 0.40, p = 0.13, treatment 3 of 15 (20.0%), control 6 of 12 (50.0%).

relative time to first occurrence of lowest symptom score, 42.9% lower, relative time 0.57, p = 0.21, treatment 15, control 12.

relative time to release from quarantine, 27.3% lower, relative time 0.73, p = 0.28, treatment 16, control 13.

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.

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