Individuals were grouped by their initial reported seizure frequency (daily, weekly, monthly, annually, or no seizures) before genetic testing and treatment changes on the y-axis, based on health care professional–reported responses to question 9 from the case report form (CRF). The reported seizure frequencies after treatment changes are represented on the x-axis, based on health care professional–reported responses to question 20 from the CRF. Only individuals who had a response provided for both pretreatment and posttreatment were included in this analysis.