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All Studies   Meta Analysis   Recent: 
0 0.5 1 1.5 2+ Mortality -5% Improvement Relative Risk Death/intubation -54% Death/intubation/ICU -62% c19ivm.org Ferreira et al. Ivermectin for COVID-19 LATE Favors ivermectin Favors control
Outcomes associated with Hydroxychloroquine and Ivermectin in hospitalized patients with COVID-19: a single-center experience
Ferreira et al., Revista da Associação Médica Brasileira, doi:10.1590/1806-9282.20210661
26 Nov 2021    Source   PDF   Share   Tweet
Retrospective 230 hospitalized patients in Brazil showing no significant difference with ivermectin treatment. Authors note that the treatments were more likely to be offered to sicker patients. Authors indicate that they do not know when medication was started, which in some cases could have been after ICU admission or intubation. Baseline total chest CT opacities was 20% for ivermectin vs. 15% for control. Dosage is unknown.
risk of death, 5.0% higher, RR 1.05, p = 1.00, treatment 3 of 21 (14.3%), control 11 of 81 (13.6%).
risk of death/intubation, 54.3% higher, RR 1.54, p = 0.37, treatment 6 of 21 (28.6%), control 15 of 81 (18.5%).
risk of death/intubation/ICU, 62.4% higher, RR 1.62, p = 0.27, treatment 8 of 21 (38.1%), control 19 of 81 (23.5%).
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
This study is excluded in the after exclusion results of meta analysis: unadjusted results with no group details; substantial unadjusted confounding by indication likely.
Ferreira et al., 26 Nov 2021, retrospective, Brazil, peer-reviewed, 5 authors, study period 12 March, 2020 - 8 July, 2020, average treatment delay 7.0 days, dosage not specified.
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Late treatment
is less effective
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