Statistical analysis
RStudio version 1.3.1093 software was used for all statistical analyses.
Chi-square (χ2) significance test was used to detect significant
relationships between various parameters and prognostic factors.
Kaplan-Meier curve was used to analyze overall survival among follow-up
cases. A p value<0.05 was considered statistically
significant. A multivariate COX regression hazard model was
applied to evaluate the interplay of all the variables.