Annual risk of stroke based on CHADS2 or CHA2DS2-VASc score
| Score | CHADS211 | CHA2DS2-VASc12 |
|---|---|---|
| 0 | 1.9% | 0.0% |
| 1 | 2.8% | 1.3% |
| 2 | 4.0% | 2.2% |
| 3 | 5.9% | 3.2% |
| 4 | 8.5% | 4.0% |
| 5 | 12.5% | 6.7% |
| 6 | 18.2% | 9.8% |
| 7 | — | 9.6% |
| 8 | — | 12.5% |
| 9 | — | 15.2% |
CHADS2: 1 point each for congestive heart failure, hypertension, age ≥ 75, diabetes mellitus; 2 points for prior stroke or transient ischemic attack.
CHA2DS2-VASc: 1 point each for congestive heart failure, hypertension, age 65–74, diabetes mellitus, vascular disease (coronary artery disease, peripheral arterial disease, aortic aneurysm), sex category female; 2 points for age ≥ 75 and for prior stroke or transient ischemic attack.