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Subgroup analysis of the association between surgery and 1-year ACM and CSM. Using the Cox proportional hazards models, we analyzed the adjusted hazard ratios of ACM (a) and CSM (b) to surgery for the subgroup divided by the year of diagnosis, age, SEER stage, and chemotherapy
SEER - Surveillance, Epidemiology, and End Results; ACM - 1-year all-cause mortality; CSM - 1-year cancer-specific mortality
