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Kaplan-Meier plot of overall survival (years) stratified by the composite frailty scoring system. The number of patients at risk in each cohort is indicated at the bottom. Hazard ratio (HR) and corresponding 95% CI are from a Cox model adjusted for sex, Eastern Cooperative Oncology Group, estimated glomerular filtration rate, creatinine, hemoglobin, and race. The reference category was robust patients (RP cohort).
