(A and B) Time-to-event analyses performed for postoperative seizures in patients with adult-type diffusely infiltrative glioma (n = 247), stratified by glioma molecular status (IDHmut astrocytoma, n = 47; IDHwt glioblastoma, n = 168; IDHmut oligodendroglioma, n = 32) (A) or by whether patients experienced preoperative seizures (Preop sz) and/or subtotal resection (STR) (preoperative seizure and STR, n = 49; preoperative seizure and gross total resection [GTR], n = 86; no preoperative seizure and STR, n = 47; no preoperative seizure and GTR, n = 65) (B). Data were analyzed with the log-rank (Mantel-Cox) test. (C) Forest plot depicting univariate and multivariate analyses of risk factors associated with postoperative seizures. ECoG, electrocorticography.