Prognosis of radiotherapy for esophageal cancer in elderly patients exceeding seventy-five years old

Figure 1 The survival curves of elderly patients with esophageal cancer in different groups. A: Age; B: Sex; C: Marital status; D: Smoke; E: Drink; F: C stage; G: T stage; H: N stage; I: M stage; J: Tumor length; K: Tumor location; L: Eastern Cooperative Oncology Group; M: Charlson comorbidity index; N: Nutritional risk screening 2002; O: Body mass index; P: Weight loss; Q: Radiation dose; R: Chemotherapy. BMI: Body mass index; ECOG: Eastern Cooperative Oncology Group; CCI: Charlson comorbidity index; NRS2002: Nutritional risk screening 2002.

Figure 2 Receiver operating characteristic curves of Charlson comorbidity index, nutritional risk screening 2002, and clinical stage for predicting odds ratio in elderly patients with esophageal cancer after radiotherapy. ROC: Receiver operating characteristic; AUC: Area under curve; CCI: Charlson comorbidity index; NRS2002: Nutritional risk screening 2002.