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Calculator: CHA2DS2-VASc risk stratification score for estimation of stroke risk for nonvalvular atrial fibrillation in adults


Calculator: CHA2DS2-VASc risk stratification score for estimation of stroke risk for nonvalvular atrial fibrillation in adults

 
Clinical criteria
 
Sex

Female (1 point)

Male (0 points)
Age

≤64 years old (0 points)

65 to 74 years old (1 point)

≥75 years old (2 points)
Comorbidities

Heart failure (1 point)

Hypertension (1 point)

Diabetes mellitus (1 point)

History of stroke, TIA, or thromboembolism (2 points)

Vascular disease (history of MI, PAD, or aortic atherosclerosis) (1 point)

 
Important: Inputs must be complete to perform calculation.

 
Total criteria point count:
 

 

Unadjusted stroke rate

 
0 points: 0.2% per year
1 point: 0.6% per year
2 points: 2.2% per year
3 points: 3.2% per year
4 points: 4.8% per year
5 points: 7.2% per year
6 points: 9.7% per year
7 points: 11.1% per year
8 points: 11% per year
9 points: 12.2% per year

 
Notes
  • These are unadjusted rates for stroke and intracranial bleeding which were not adjusted for possible use of aspirin.[1] Actual rates of stroke in contemporary cohorts might vary from these estimates.[2]
  • CHA2DS2-VASc: congestive heart failure, hypertension, age ≥75 years (doubled), diabetes mellitus, prior stroke or TIA or thromboembolism (doubled), vascular disease, age 65 to 74 years, sex category; TIA: transient ischemic attack; MI: myocardial infarction; PAD: peripheral artery disease.

 
Only digits 0 to 9 and a single decimal point (".") are acceptable as numeric inputs. Attempted input of other characters into a numeric field may lead to an incorrect result.

Information on this page may not appear correctly if printed.

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