Different types of tumor microvessels in stage I-IIIA squamous cell lung cancer and their clinical significance

Figure 3 Receiver operating characteristic curves discriminating between patients. A and B: Receiver operating characteristic (ROC) curves discriminating between patients with and without regional lymph node metastases. ROC curve for the main cohort (A); ROC curve for the training cohort (B); C and D: ROC curves discriminating between patients with and without disease recurrence. ROC curve for the main cohort (C); ROC curve for the training cohort (D). ROC: Receiver operating characteristic.