Why the study?
What is the sensitivity and specificity of atrial fibrillation diagnosis in the Swedish Patient Register compared to ECG documentation in patients with ischaemic stroke and matched controls?
Population
672 subjects comprising 336 patients with first-ever ischaemic stroke and 336 1:1 age- and gender-matched…
Comparison
Atrial fibrillation diagnosis in the Swedish… vs Electrocardiography documentation of atrial…
Design
Cohort
Follow-up
up to October 2011
Authors
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High specificity supports register use for confirmed AF cases; lower sensitivity leaves open underestimation of prevalence in observational stroke research.
What is the sensitivity and specificity of atrial fibrillation diagnosis in the Swedish Patient Register compared to ECG documentation in patients with ischaemic stroke and matched controls?
Atrial fibrillation diagnosis in the Swedish Patient Register has high specificity (93%) but modest sensitivity (80%), suggesting that relying solely on register data may underestimate AF prevalence and incidence in epidemiological studies.
Baturova et al. (2014) studied this question.