Comparison of the ATRIA, CHADS 2 , and CHA 2 DS 2 -VASc stroke risk scores in predicting ischaemic stroke in a large Swedish cohort of patients with atrial fibrillation

AIMS: -VASc scores in a national Swedish AF (SAF) cohort. METHODS AND RESULTS: -VASc. Net reclassification improvement decreased when cut-points were altered to better fit the cohort's stroke rates. CONCLUSION: -VASc. However, relative performance of the categorical scores varied by population stroke rates. Score cut-points may need to be optimized to better fit local population stroke rates.