Statistical analysis
Statistical analyses were performed using SPSS 20.0 software.
Categorical variables were described as frequency rates and percentages,
and continuous variables were described using mean values. Mean values
for continuous variables were compared using independent group t-tests
when the data were normally distributed. Multivariate logistic
regression analysis was performed to calculate adjusted odds ratios (OR)
with its 95% confidence interval (CI) for ICU hospitalization and
mortality in COVID‐19 patients. ROC curves were obtained for the
parameters that were significsntly affecting mortality.P < 0.05 was considered statistically significant.