Statistical Analysis
The statistical analysis was performed using Stata version 14.0 (StataCorp LLC, College Station, TX). Descriptive statistics were used to summarize demographic characteristics. Continuous variables were assessed for normality with the Kolmogorov-Smirnov test. All normally distributed data were analyzed using an unpaired Student t test. A 2-tailed P value < 0.05 was considered statistically significant. Data found to be non-normally distributed were analyzed using Mann–Whitney U test. Comparisons of proportions between different groups of patients were carried out using a Chi square and Fisher’s exact test.