Importance Cognitive decline is a major cause of disability in stroke survivors. The
magnitude of survivors' cognitive changes after stroke is uncertain. Objective To measure
changes in cognitive function among survivors of incident stroke, controlling for their
prestroke cognitive trajectories. Design, Setting, and Participants Prospective study of 23
572 participants 45 years or older without baseline cognitive impairment from the Reasons
for Geographic and Racial Differences in Stroke (REGARDS) cohort, residing in the …