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0 0.5 1 1.5 2+ Progression 5% Improvement Relative Risk Progression (b) 55% Viral+ at day 7 26% Viral+ at day 14 -10% c19hcq.org Kamran et al. HCQ for COVID-19 LATE TREATMENT Favors HCQ Favors control
Clearing the fog: Is HCQ effective in reducing COVID-19 progression: A randomized controlled trial
Kamran et al., medRxiv, doi:10.1101/2020.07.30.20165365 (Preprint)
4 Aug 2020    Source   PDF   Share   Tweet
Study of 349 low-risk hospitalized patients with 151 non-consenting or ineligible patients used as controls. SOC included zinc, vitamin C and vitamin D. A statistically significant improvement in PCR negativity is shown at day 7 with HCQ treatment, 52.1% (HCQ) versus 35.7% (control), p=0.001, but no statistically significant difference at day 14, or in progression. Patients were relatively young and there was no mortality. Only 3% of patients had any disease progression and all patients recovered, so there is little if any room for treatment benefit. Progression among higher-risk patients with comorbidities was lower with treatment (12.9% versus 28.6%, p=0.3, very few cases).
Despite the title, this is not an RCT since patients self-selected the arm, or were chosen based on allergies/contraindications. The treatment group had about twice the number of patients with comorbidities. Treatment delay is unknown - it was recorded but not reported in the paper.
Viral load was not measured. As with other studies, PCR may detect non-replicable viral nucleic acid, this is more likely at day 14. Details on the test accuracy are not provided, authors note that RT-PCR sensitivity ranges from 34-80%.
risk of progression, 5.0% lower, RR 0.95, p = 1.00, treatment 11 of 349 (3.2%), control 5 of 151 (3.3%), NNT 627.
risk of progression, 54.8% lower, RR 0.45, p = 0.30, treatment 4 of 31 (12.9%), control 2 of 7 (28.6%), NNT 6.4, with comorbidities.
risk of viral+ at day 7, 25.5% lower, RR 0.74, p = 0.001, treatment 349, control 151.
risk of viral+ at day 14, 10.0% higher, RR 1.10, p = 0.52, treatment 349, control 151.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
This study is excluded in the after exclusion results of meta analysis: excessive unadjusted differences between groups.
Kamran et al., 4 Aug 2020, prospective, Pakistan, preprint, 10 authors.
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