This report presents a comprehensive survival analysis using the Kaplan-Meier estimator, Nelson-Aalen cumulative hazard model, and Cox Proportional Hazards model. The analysis examines the impact of key variables (e.g., sex, age, and ECOG performance status) on survival probabilities. Log-rank tests were conducted to compare survival curves, and hazard ratios were estimated to assess the influence of covariates on survival time. The results include visualizations such as survival curves, cumulative hazard plots, and Cox regression outputs.