Descriptive analysis of quantitative variables normally distributed were expressed as mean (number and %) and SD, whereas not-normally distributed variables were shown as median and IQR. Comparison of quantitative variables between two groups was performed using the t-test or non-parametric tests, according to the normality of the distribution. Comparison of proportions was performed using the Fisher’s exact test. Missed data were not imputed, and all the analysis was performed only on non-missing data. P value less than 0.05 was considered statistically significant. SPSS software (V.25; IBM) was used for statistical analysis.