ATRIA Stroke Risk Score

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Clinical Use

Estimate stroke risk in patients with atrial fibrillation 

More Info

The ATRIA (Anticoagulation and Risk Factors in Atrial Fibrillation) study followed up 13,559 adults with nonvalvular, nontransient atrial fibrillation with 9,217 patients took warfarin at some point during follow‐up. There are 8 variables used for the calculation of the score.


ATRIA Stroke Risk Scoring
Risk Factor Points without prior stroke Points with prior stroke
Age, y
    ≥85 6 9
    75 to 84 5 7
    65 to 74 3 7
    <65 0 8
Female 1 1
Diabetes 1 1
Heart failure 1 1
Hypertension 1 1
Proteinuria 1 1
eGFR<45 or ESRD 1 1


Risk of stroke based on ATRIA Stroke Risk Score
Score Risk Annual Risk of Stroke
0 – 5 Low <1%
>6 Intermediate 1 – <2%
>6 High



1 Singer DE, Chang Y, et al. A New Risk Scheme to Predict Ischemic Stroke and Other Thromboembolism in Atrial Fibrillation: The ATRIA Study Stroke Risk Score. J Am Heart Assoc. 2013 Jun; 2(3):e000250. Full text


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Developer: Sirikarn Napan, MD, FACC