Why the study?
Ischemic stroke incidence appears to have decreased, but most studies focus on first-ever events and epidemiological data on recurrent stroke are scarce.
Population
201,316 cases of ischemic stroke in patients aged ≥18 years registered in Riksstroke in Sweden
Comparison
First-ever vs recurrent ischemic stroke across three time periods (2010-2012, 2013-2016, and 2017-2019)
Design
Nationwide registry-based epidemiological study
Authors
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Supports secondary prevention emphasis in stroke; extends incidence trends but leaves causal drivers open in observational data.
Between 2010 and 2019 in Sweden, the incidence of both first-ever and recurrent ischemic stroke declined significantly, with the proportional decline being almost double for recurrent stroke, likely driven by increased use of secondary preventive medications.
Drescher et al. (2022) studied this question.
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