2.4 | Statistical analysis
Continuous variables are presented as median with interquartile range (IQR 25th-75th percentile). Categorical variables are expressed as numbers and percentages. Continuous variables were compared using the ANOVA test or the Mann-Whitney U test, as appropriate. Spearman’s correlation test was used to test for any associations between two categorical variables. All reported P values are two‐sided, with a P < 0.05 considered to indicate statistical significance. Statistical analyses were performed using the Statistical Package for Social Studies (SPSS), version 25.0 (IBM, Armonk, NY).