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0 0.25 0.5 0.75 1 1.25 1.5 1.75 2+ Recovery 52% Improvement Relative Risk Recovery (b) 3% Virological cure 3% c19hcq.com/sobngwi.html Favors HCQ Favors doxycycline
29 July 2021 - Early treatment study
Doxycycline is a safe alternative to Hydroxychloroquine + Azithromycin to prevent clinical worsening and hospitalization in mild COVID-19 patients: An open label randomized clinical trial (DOXYCOV)
Sobngwi et al., medRxiv, doi:10.1101/2021.07.25.21260838 (Preprint)
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RCT 194 mild/asymptomatic low-risk patients in Cameroon, 97 treated with HCQ+AZ and 97 treated with doxycycline, showing 2.1% symptomatic patients at day 10 with HCQ+AZ, versus 4.3% with doxycycline, but without statistical significance. There were only 6 patients with symtoms at day 10. There was no mortality or hospitalization, and no major adverse events.
risk of no recovery, 51.6% lower, RR 0.48, p = 0.44, treatment 2 of 95 (2.1%), control 4 of 92 (4.3%), NNT 45, day 10.
risk of no recovery, 3.2% lower, RR 0.97, p = 1.00, treatment 18 of 95 (18.9%), control 18 of 92 (19.6%), NNT 162, day 3.
risk of no virological cure, 3.2% lower, RR 0.97, p = 0.88, treatment 32 of 95 (33.7%), control 32 of 92 (34.8%), NNT 91, day 10.
Effect extraction follows pre-specified rules prioritizing more serious outcomes.
Sobngwi et al., 7/29/2021, Randomized Controlled Trial, Cameroon, Africa, preprint, 16 authors, dosage 400mg days 1-5, this trial compares with another treatment - results may be better when compared to placebo.
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