Fig.5From: Development and validation of a nomogram for prediction of cervical lymph node metastasis in middle and lower thoracic esophageal squamous cell carcinomaDecision curve analysis (DCA) for the nomogram model. The y axis measures the net benefit. The x-axis represents the threshold probability. The black line represents the hypothesis that all patients have cervical lymph node metastasis. The gray line represents the hypothesis that no patients have cervical lymph node metastasisBack to article page