“…Also, patients who had undergone epilepsy surgery, peripheral neurostimulator implantation (PNS), responsive neurostimulator implantation (RNS)/intracranial monitoring (ICM) were abstracted based on ICD-9CM procedure codes (brain surgery, 0124-5, 0131, 0151-3, 0159; PNS, 0492, 8694−98; RNS/ICM, 0120, 0293) referring to the previous studies (Supplemental Table 2). Patients with febrile seizure (780.31) were excluded because we had already analyzed the inpatient data for febrile seizure in the previous studies [20,21]. Furthermore, we excluded patients with brain tumors (191.xx, 198.3, 255.0-2), vascular malformation (747.81), and brain injury (800-4, 851-4, 430-2).…”