2.3 Statistical Analysis
Clinical characteristics of the study participants prior to the COVID-19
pandemic were compared with those during the COVID-19 pandemic. All data
were entered into the statistical package SPSS version 25.0 (SPSS Inc.,
Chicago, IL, USA). Continuous variables were expressed as median
(interquartile range, IQR), and compared with Mann-Whitney U test.
Categorical variables were presented as number (%) and analyzed using
Chi-square test or Fisher’s exact test. Binary logistic regression
analysis was used to examine the related factors of severe pneumonia in
children. Two-sided P values ≤ 0.05 were considered statistically
significant.
Results