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Table 3 Select Structured Data and Case/Control criteria for external validation in the UK Biobank

From: Comparative analysis, applications, and interpretation of electronic health record-based stroke phenotyping methods

UK Biobank Variables Identification N samples
Subject Data Diagnosis codes (ICD10), procedure codes (OCPS4), medication prescriptions (Mapped to RxNorm), or demographics 384,208
(T) Cases: AIS Tirschwell Criteria ICD10 I63.xxx, I64.x (41,202,41,204) 4922
(C) Controls: Without Cerebrovascular Disease No (C) Codes (41,202,41,204) 312,500
Self-reported AIS but no diagnosis codes Date of AIS (42008), no AIS Tirschwell Criteria 163