Fig. 3

Performance of ctDNA candidate count index (ctCandi) and classification machine learning models. A ctCandi of 49 colon cancer patients and 60 healthy controls. The P-value was calculated by the Wilcoxon rank-sum test. B Receiver operating characteristic (ROC) curves of ctCandi for distinguishing the colon cancer patients and the healthy controls. TPR indicates a true positive ratio, and FPR indicates a false positive ratio