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0 0.5 1 1.5 2+ Mortality -19% Improvement Relative Risk Ventilation -461% ICU admission -463% c19hcq.com Awad et al. HCQ for COVID-19 LATE TREATMENT Favors HCQ Favors control
Awad, 336 patient HCQ late treatment study: 19% higher mortality [p=0.6], 461% higher ventilation [p<0.0001], and 463% higher ICU admission [p<0.0001] https://c19p.org/awad
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Impact of hydroxychloroquine on disease progression and ICU admissions in patients with SARS-CoV-2 infection
Awad et al., American Journal of Health-System Pharmacy, doi:10.1093/ajhp/zxab056
18 Feb 2021    Source   PDF   Share   Tweet
This paper has inconsistent values - the number of treatment and control patients differs in the text and Table 1, we have used treatment 188 and control 148. Retrospective 336 hospitalized patients in the USA showing higher mortality, ICU admission, and intubation with treatment. Confounding by indication is likely. Time varying confounding is also likely due to declining usage over the early period when overall treatment protocols were also improving dramatically. Authors and reviewers appear to be unfamiliar with either of these.
risk of death, 19.1% higher, RR 1.19, p = 0.60, treatment 56 of 188 (29.8%), control 37 of 148 (25.0%).
risk of mechanical ventilation, 460.7% higher, RR 5.61, p < 0.001, treatment 64 of 188 (34.0%), control 9 of 148 (6.1%), adjusted per study, odds ratio converted to relative risk.
risk of ICU admission, 463.4% higher, RR 5.63, p < 0.001, treatment 67 of 188 (35.6%), control 9 of 148 (6.1%), adjusted per study, odds ratio converted to relative risk.
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This study is excluded in the after exclusion results of meta analysis: substantial confounding by time likely due to declining usage over the early stages of the pandemic when overall treatment protocols improved dramatically, substantial unadjusted confounding by indication likely.
Awad et al., 2/18/2021, retrospective, USA, North America, peer-reviewed, 4 authors.
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