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. Author manuscript; available in PMC: 2019 Apr 9.
Published in final edited form as: JAMA Neurol. 2018 Aug 1;75(8):929–938. doi: 10.1001/jamaneurol.2018.0333

Figure 1. Flow Diagram Showing Delineation of Epilepsy and Comparison Cohorts.

Figure 1

Identification of epilepsy and comparison cohorts from the Secure Anonymised Information Linkage (SAIL) Databank and the Clinical Practice Research Datalink (CPRD) database. Individuals who did not meet the cohort definition criteria were excluded at the identified stages of cohort construction. AED indicates antiepileptic drug; HES, Hospital Episode Statistics; and ONS, Office for National Statistics.