TY - JOUR AU - Britton, Annie AU - Milne, Beverly AU - Butler, Therese AU - Sanchez-Galvez, Adelaida AU - Shipley, Martin AU - Rudd, Anthony AU - DA Wolfe, Charles AU - Bhalla, Ajay AU - Brunner, Eric J. PY - 2012 DA - 2012/06/21 TI - Validating self-reported strokes in a longitudinal UK cohort study (Whitehall II): Extracting information from hospital medical records versus the Hospital Episode Statistics database JO - BMC Medical Research Methodology SP - 83 VL - 12 IS - 1 AB - Valuable information on the determinants of non-fatal stroke can be obtained from longitudinal observational cohort studies. Such studies often rely on self-reported stroke events, which are best validated with external medical evidence. The aim of this paper is to compare the information on incident non-fatal stroke events arising from different sources. SN - 1471-2288 UR - https://doi.org/10.1186/1471-2288-12-83 DO - 10.1186/1471-2288-12-83 ID - Britton2012 ER -