Predictors of all-cause mortality in hospitalized COVID-19 patients taking corticosteroids: a multicenter retrospective cross-sectional study

Despite the recommendations to avoid using corticosteroids systematically for hospitalized coronavirus disease of 2019 (COVID-19) patients, healthcare professionals used personalized treatments, including corticosteroids, as adjuncts to treat their patients due to their limited access to treatment options. This study aims to evaluate the use of corticosteroids among hospitalized COVID-19 patients with all-cause mortality as the primary outcome and to assess the predictors of all-cause mortality associated with the characteristics of the patients and the corticosteroid regimens adopted.

Methods: A multicenter retrospective study was performed over three months targeting 422 COVID-19 patients from six hospitals in Lebanon. Data were collected from patients' medical charts retrospectively and covered a period of one year (September 2020-August 2021).

Results: The study sample included 422 patients, predominantly males, with 59% of cases classified as severe or critical cases. Dexamethasone and methylprednisolone were the most used corticosteroids. Around 22% of the patients died during hospitalization. After adjusting for covariates, performing a polymerase chain reaction before admission increased the mortality rate by 424% compared to doing it at hospital admission (aHR 4.24, 95% CI 1.35-13.3), with 18.11 times higher mortality rate among critical cases (aHR 18.11, 95% CI 9.63-31.05). Exposure to side effects from corticosteroids increased the mortality rate by 514% compared to others (aHR 5.14, 95% CI 1.28-8.58). In particular, the mortality rate among patients having hyperglycemia dropped by 73% compared to others (aHR 0.27, 95% CI 0.06-0.98).

Conclusion: Corticosteroids are frequently used in treating hospitalized COVID-19 patients. The all-cause mortality rate was higher among older and critical cases and lower among smokers and those treated for more than 7 days. Research exploring the safety and efficacy of corticosteroids is required to allow better in-hospital management of COVID-19 cases.