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  1. Article

    Open Access

    Accurate classification of carotid endarterectomy indication using physician claims and hospital discharge data

    Studies of carotid endarterectomy (CEA) require stratification by symptomatic vs asymptomatic status because of marked differences in benefits and harms. In administrative datasets, this classification has bee...

    Stephen van Gaal, Arshia Alimohammadi, Amy Y. X. Yu in BMC Health Services Research (2022)

  2. Article

    Open Access

    Sex differences in direct healthcare costs following stroke: a population-based cohort study

    The economic burden of stroke on the healthcare system has been previously described, but sex differences in healthcare costs have not been well characterized. We described the direct person-level healthcare c...

    Amy Y. X. Yu, Murray Krahn, Peter C. Austin in BMC Health Services Research (2021)

  3. Article

    Open Access

    Moderate sensitivity and high specificity of emergency department administrative data for transient ischemic attacks

    Validation of administrative data case definitions is key for accurate passive surveillance of disease. Transient ischemic attack (TIA) is a condition primarily managed in the emergency department. However, pr...

    Amy Y. X. Yu, Hude Quan, Andrew McRae, Gabrielle O. Wagner in BMC Health Services Research (2017)