“…In these studies, the dosage of LEV was mostly between 10 and 60 mg/kg/d. Thirteen studies used electrical seizures as the diagnostic criteria for newborns ( 3 , 7 , 8 , 21 , 24 , 30 – 32 , 34 , 37 , 38 , 41 , 43 ), 5 studies used clinical or electrical seizures as the diagnostic criteria ( 22 , 29 , 35 , 39 , 40 ), and 6 studies confirmed seizures only by clinical manifestations ( 23 , 25 , 33 , 36 , 42 , 44 ). Nine studies defined seizure cessation on EEG within 24 h as a primary outcome ( 3 , 8 , 24 , 25 , 31 , 32 , 34 , 37 , 39 ), some studies contained longer seizure control times (48 h−7 d) ( 29 , 30 , 33 , 38 , 44 ), and 7 articles did not describe the seizure control times ( 21 , 22 , 35 , 36 , 40 , 41 , 43 ).…”