ILAE outcome classification

ILAE outcome classification is an ordinal scale based on seizure-days/year, with categories defined as complete seizure freedom without auras (Class 1), only auras without other seizures (Class 2), 1–3 seizure-days/year (Class 3), 4 seizure-days/year to a decrease of 50% from pretreatment seizure frequency (Class 4), from 50% decrease up to 100% increase (Class 5), and ≥ 100% increase in seizure frequency (Class 6).