mdcalc.com | CHADS2 Score for Atrial Fibrillation Stroke Risk

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Units: US SI

CHADS2 Score for Atrial Fibrillation Stroke Risk

The formula is additive, with the points next to the "Yes" of each corresponding question.

A newer risk score to determine stroke risk in atrial fibrillation patients called CHA2DS2-VASc may provide a more accurate risk assessment.

Congestive Heart Failure history?	Yes +1
Hypertension history?	Yes +1
Age ≥ 75?	Yes +1
Diabetes Mellitus history?	Yes +1
Stroke symptoms previously or TIA?	Yes +2
Score	points

The adjusted stroke rate was the expected stroke rate per 100 person-years derived from the multivariable model assuming that aspirin was not taken.