Fig. 2
Comparison of Global Survival and Survival by Variable. Kaplan‒Meier survival curve illustrating the probability of survival over time for a group of patients with head and neck cancer. The graph axes display time in months on the x-axis and the probability of survival on the y-axis. Additionally, the log-rank test was performed to compare survival between different groups (2b, c, d, e), with p ≤ 0.05 considered statistically significant