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.