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HCQ study #230 of 360   Meta Analysis
12/9 Late treatment study
Johnston et al., EClinicalMedicine, doi:10.1016/j.eclinm.2021.100773 (preprint 12/9) (Peer Reviewed)
Hydroxychloroquine with or Without Azithromycin for Treatment of Early SARS-CoV-2 Infection Among High-Risk Outpatient Adults: A Randomized Clinical Trial
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Small early terminated late treatment RCT comparing vitamin C + folic acid, HCQ + folic acid, and HCQ+AZ, showing non-statistically significantly lower hospitalization with HCQ/HCQ+AZ, and faster viral clearance with HCQ. Enrollment was a median of 5.9 days after onset (6.2 and 6.3 in the treatment arms).
The median time to viral clearance for vitamin C + folic acid was 8 days in the preprint but changed to 7 days in the published paper without explanation.
Low risk patients, median age 37, no deaths (not matching the title which claims "high risk"). Post hoc addition of a new Ct threshold to obscure the statistically significant faster clearance. No analysis for time from symptom onset. Authors identify (relatively) low and high risk cohorts, but do not provide either viral shedding or symptom resolution results for the cohorts. NCT04354428. For other issues see [1].
Johnston et al., 12/9/2020, Randomized Controlled Trial, USA, North America, peer-reviewed, 30 authors, dosage 400mg bid day 1, 200mg bid days 2-10.
risk of hospitalization, 29.9% lower, RR 0.70, p = 0.73, treatment 5 of 148 (3.4%), control 4 of 83 (4.8%), HCQ + folic acid and HCQ + AZ vs. vitamin C + folic acid.
risk of no recovery, 2.0% lower, RR 0.98, p = 0.95, treatment 30 of 60 (50.0%), control 34 of 72 (47.2%), adjusted per study, HCQ + folic acid vs. vitamin C + folic acid.
risk of no recovery, 9.9% higher, RR 1.10, p = 0.70, treatment 34 of 65 (52.3%), control 34 of 72 (47.2%), adjusted per study, HCQ + AZ vs. vitamin C + folic acid.
time to viral-, 28.6% lower, relative time 0.71, treatment 49, control 52, median time, HCQ + folic acid vs. vitamin C + folic acid.
time to viral-, 14.3% lower, relative time 0.86, treatment 51, control 52, median time, HCQ + AZ vs. vitamin C + folic acid.
risk of no virological cure, 38.3% lower, RR 0.62, p = 0.05, treatment 6 of 49 (12.2%), control 12 of 52 (23.1%), adjusted per study, HCQ + folic acid vs. vitamin C + folic acid.
risk of no virological cure, 20.0% lower, RR 0.80, p = 0.49, treatment 11 of 51 (21.6%), control 12 of 52 (23.1%), adjusted per study, HCQ + AZ vs. vitamin C + folic acid.
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.
All 360 studies   Meta Analysis
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