Fig. 2From: Application of artificial intelligence in a real-world research for predicting the risk of liver metastasis in T1 colorectal cancerPredictive value of overall models after optimization. Inner validation in SEER database: a ROC curves of seven individual models and stacking model. Outer validation in our Chinese cohort: b ROC curves of seven individual models and stacking model. SEER: Surveillance, Epidemiology, and End Results; and ROC: receiver operating characteristicBack to article page