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Observational Study
. 2021 Jan;27(1):105-111.
doi: 10.1016/j.cmi.2020.09.014. Epub 2020 Sep 22.

Efficacy of corticosteroid treatment for hospitalized patients with severe COVID-19: a multicentre study

Affiliations
Observational Study

Efficacy of corticosteroid treatment for hospitalized patients with severe COVID-19: a multicentre study

Michele Bartoletti et al. Clin Microbiol Infect. 2021 Jan.

Abstract

Objective: To assess the efficacy of corticosteroids in patients with coronavirus disease 2019 (COVID-19).

Methods: A multicentre observational study was performed from 22 February through 30 June 2020. We included consecutive adult patients with severe COVID-19, defined as respiratory rate ≥30 breath per minute, oxygen saturation ≤93% on ambient air or arterial partial pressure of oxygen to fraction of inspired oxygen ≤300 mm Hg. We excluded patients being treated with other immunomodulant drugs, receiving low-dose corticosteroids and receiving corticosteroids 72 hours after admission. The primary endpoint was 30-day mortality from hospital admission. The main exposure variable was corticosteroid therapy at a dose of ≥0.5 mg/kg of prednisone equivalents. It was introduced as binomial covariate in a logistic regression model for the primary endpoint and inverse probability of treatment weighting using the propensity score.

Results: Of 1717 patients with COVID-19 evaluated, 513 were included in the study, and of these, 170 (33%) were treated with corticosteroids. During hospitalization, 166 patients (34%) met the criteria of the primary outcome (60/170, 35% in the corticosteroid group and 106/343, 31% in the noncorticosteroid group). At multivariable analysis corticosteroid treatment was not associated with lower 30-day mortality rate (adjusted odds ratio, 0.59; 95% confidence interval (CI), 0.20-1.74; p 0.33). After inverse probability of treatment weighting, corticosteroids were not associated with lower 30-day mortality (average treatment effect, 0.05; 95% CI, -0.02 to 0.09; p 0.12). However, subgroup analysis revealed that in patients with PO2/FiO2 < 200 mm Hg at admission (135 patients, 52 (38%) treated with corticosteroids), corticosteroid treatment was associated with a lower risk of 30-day mortality (23/52, 44% vs. 45/83, 54%; adjusted odds ratio, 0.20; 95% CI, 0.04-0.90; p 0.036).

Conclusions: The effect of corticosteroid treatment on mortality might be limited to critically ill COVID-19 patients.

Keywords: ARDS; COVID-19; Corticosteroids; Mortality; SARS-CoV-2.

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Figures

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Fig. 1
Study flowchart.

References

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