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