Abstract Background Coronavirus disease (COVID-19) is rapidly spreading worldwide.
Although 10–20% of patients with COVID-19 have severe symptoms, little is known about …

Background The primary goal of the presented cross-sectional observational study was to
determine the clinical and demographic risk factors for adverse coronavirus disease 2019 …

Background: To investigate the risk factors related to aggravation and clinical outcomes in
coronavirus disease 2019 (COVID-19) patients. Methods: We performed a retrospective …

Background COVID-19 is a pandemic disease caused by a novel coronavirus, severe acute
respiratory syndrome coronavirus 2 (SARS-CoV-2). Predictors for severe COVID-19 …

Abstract Objectives Since December 2019, the novel coronavirus disease 2019 (COVID-19)
that emerged in Wuhan city has spread rapidly around the world. The risk for poor outcome …

Objective We aimed to systematically identify the possible risk factors responsible for severe
cases. Methods We searched PubMed, Embase, Web of science and Cochrane Library for …

Objective We intend to identify some probable risk factors that are responsible for the
severity of COVID‐19 using a meta‐analysis. Methods The literature exploration lasted up to …

Background Studies on the 2019 novel coronavirus disease (COVID-19) have generally
been limited to the description of the epidemiology and initial clinical characteristics. We …

Background The novel coronavirus disease 2019 (COVID-19) broke out globally. Early
prediction of the clinical progression was essential but still unclear. We aimed to evaluate …

Background A few studies have revealed the clinical characteristics of hospitalized patients
with COVID-19. However, predictive factors for the outcomes remain unclear. Objective …