Conclusions
Survived severe and non-survived COVID-19 patients had distinct clinical
and laboratory characteristics, which were separated by principle
component analysis. Logistic regression revealed several risk factors
such as elder age, greater affected lobe numbers and higher level of
serum CRP for the mortality of severe COVID-19 patients. Longitudinal
changes of laboratory findings indicate the advancement of the disease
and may be helpful in predicting the progression of severe patients.