CHADS2 score for atrial fibrillation stroke risk
Estimates stroke risk in patients with non-valvular atrial fibrillation.
Research authors: Gage BF, van Walraven C, Pearce L, Hart RG, Koudstaal PJ, Boode BS, Petersen P.
Version: 1.11
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Total CHADS2 score: points

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Note:
One recommendation suggests a 0 score is low risk and may not require anticoagulation, however there is literature that suggests that not all patients with a CHADS2 score of 0 are at low risk for ischemic stroke. Consider using the CHA2DS2-VASc score to further risk stratify patients who are identified as low risk by their CHADS2 score. For patients who are identified as moderate (score 1-2) or high risk for ischemic stroke (>3), anticoagulation therapy should be considered.

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