ArticleEuropean stroke journal2026
Factors associated with oral anticoagulant non-use at first ischemic stroke in atrial fibrillation: A nationwide study.
Article in European stroke journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundLimited data exist on characteristics and patterns associated with patients with atrial fibrillation (AF) who encounter first-ever ischemic stroke (IS) while not on oral anticoagulation (OAC) therapy.
methodsFrom a nationwide registry-linkage database including all patients with AF in Finland from 2007 to 2017, we included those with IS after diagnosis of AF and those without IS. Factors associated with non-OAC use among IS patients were examined using logistic regression, with separate models for independent variables and risk scores.
resultsAmong 174,094 patients with new-onset AF, 11,680 (6.7%) patients (56.9% female; mean age 79.0 years) experienced IS. A total of 7507 (64.3%) of IS patients were not on OAC at the time of IS (mean age 78.9 years; 57.2% female). The proportion of non-OAC decreased from 77.2% to 45.6% over the study period. In the adjusted logistic regression model, the strongest factor associated with non-OAC was CHA2DS2-VA score of 0 points (OR 4.561; 95% CI, 3.097-6.718), followed by a score of 1 point (OR 2.382; 95% CI, 1.971-2.879). Other significant independent factors associated with non-OAC use were alcohol abuse (OR 2.282; 95% CI, 1.805-2.885), liver dysfunction (OR 2.120; 95% CI, 1.335-3.367), renal dysfunction (OR 1.430; 95% CI, 1.200-1.703), dementia (OR 1.394; 95% CI, 1.227-1.583), prior myocardial infarction (OR 1.346; 95% CI, 1.181-1.535), age <65 years (OR 1.274; 95% CI, 1.034-1.571), lowest income (OR 1.232; 95% CI, 1.104-1.374), female sex (OR 1.177; 95% CI, 1.077-1.287), and antiplatelets/NSAID use (OR 1.133; 95% CI, 1.042-1.231).
conclusionsLess than 2% of AF patients experienced IS during study period and among these around 63% were without appropriate OAC therapy at the time of the IS. However, decreasing trend of non-OAC use was identified throughout the study period.
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