Fig. 3

Predictive model for early recurrence of nasopharyngeal carcinoma. Confusion matrix (A, C) and the most important features for the prediction of NPC recurrence (B, D) in RF and LightGBM model. AC, adjuvant chemotherapy; BA, balanced accuracy; CC, concurrent chemotherapy; EBV DNA, Epstein-Barr virus DNA; ER, early recurrence; IC, inducing chemotherapy; LightGBM, light gradient boosting machine; LR, late recurrence; NPV, negative predictive value; NR, non-recurrence; PPV, positive predictive value; RF, random forest; RT, radiotherapy