Introduction
Coronavirus disease 2019 (COVID-19) started in December 2019 as a
respiratory infection with epidemic potentials 1.
Since the appearance of several cases in Wuhan, the virus has extended
rapidly to different parts of China as well as to other countries. Most
of COVID-19 infections has occurred through human-to-human contact in
family homes and hospitals 2. The typical presentation
of COVID-19 involves fever and cough, but some cases of COVID-19 may
progress to acute respiratory failure, acute respiratory distress
syndrome, metabolic acidosis, coagulopathy, and septic shock, which are
associated with high mortality 3, 4. Early diagnosis,
treatment and prognostic stratification of patients with COVID-19 are
crucial. Neutrophil-to-lymphocyte ratio or N terminal pro B type
natriuretic peptide (NT-proBNP) has been suggested to be risk factors
for severe illness Patients 5. But this study ignore
the many factors that influence patient outcome.
Despite the prevalence of COVID-19, few studies have evaluated the risk
factors on outcome in patients. In fact, many factors are used in order
to predict the severity and determine the prognosis of pneumonia6. Early identification of risk factors for severe
illness facilitated appropriate supportive care and alleviate the
shortage of medical resources.