Table 5

CHADS2 score: risk for stroke in nonhemophilia patients

CHADS2 scoreAdjusted stroke rate per 100 patient-years
0 1.9 
1 2.8 
2 4.0 
3 5.9 
4 8.5 
5 12.5 
6 18.2 
CHADS2 scoreAdjusted stroke rate per 100 patient-years
0 1.9 
1 2.8 
2 4.0 
3 5.9 
4 8.5 
5 12.5 
6 18.2 

CHADS2 score is calculated by adding 1 point for congestive heart failure, hypertension, age ≥ 75 years, or diabetes mellitus, and 2 points for prior stroke or transient ischemic attacks. Low risk = 0; moderate risk = 1; high risk ≥ 2.

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