Methods
TIA, stroke, death, strokes
TRANSIENT ISCHEMIC ATTACK, STROKE, EVENT, EVENTS, TIA, STROKES
The OXVASC is a population-based study of all acute vascular events in a defined population of 94,973 persons registered with approximately 100 primary care physicians working in 9 general practices Oxfordshire, United Kingdom.The present sample included all first-in-study strokes that were ascertained from April 1, 2002, to March 31, 2017. Case ascertainment was based on multiple sources, including a daily rapid access transient ischemic attack (TIA)/stroke clinic for patients with suspected TIA or stroke, daily searches of hospital admissions to relevant wards, emergency department attendances, and Bereavement Office records; and monthly searches of death certificates, coroner reports, GP diagnostic codes, and brain/vascular imaging referrals. Further details on the ascertainment methodology used in the OXVASC are reported elsewhere.Patients were seen by study physicians as soon as possible after an index event. At initial assessment, data were collected on clinical and demographic variables, including premorbid disability (mRS),If a patient died before a study assessment, information was obtained from records and eye witness accounts if possible. All cases were reviewed by the study's senior neurologist (P.M.R.), and stroke was defined using the World Health Organization criteria