Table 2. AnnuaI Risk of Ischemic Thromboembolism Stratified by CHA2DS2-VASc Score, Gender, and Age among AF patients without anticoagulants.
| Age = 20–49 | Age = 50–64 | Age = 65–74 | Age = 75 up | All | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Events | Risk | Events | Risk | Events | Risk | Events | Risk | Events | Risk | |
| Female | ||||||||||
| 0 | - - | - - | - - | - - | - - | - - | - - | - - | - - | - - |
| 1 | 14 | 0.56% | 41 | 1.30% | - - | - - | - - | - - | 55 | 0.78% |
| 2 | 23 | 1.87% | 129 | 2.28% | 66 | 2.64% | - - | - - | 218 | 1.94% |
| 3 | 22 | 5.75% | 111 | 3.31% | 327 | 3.60% | 184 | 5.63% | 644 | 3.16% |
| 4 | 7 | 11.68% | 85 | 11.45% | 394 | 5.59% | 885 | 6.14% | 1371 | 4.19% |
| 5 | 2 | 12.76% | 62 | 21.90% | 282 | 12.87% | 888 | 7.38% | 1234 | 5.04% |
| 6 | 1 | 47.71% | 13 | 20.61% | 210 | 21.76% | 775 | 14.59% | 999 | 7.19% |
| 7–9 | 0 | 0.00% | 7 | 59.02% | 65 | 23.17% | 647 | 20.98% | 719 | 9.56% |
| Male | ||||||||||
| 0 | 22 | 0.50% | 94 | 1.75% | - - | - - | - - | - - | 116 | 1.18% |
| 1 | 38 | 1.29% | 216 | 2.43% | 131 | 2.77% | - - | - - | 385 | 2.32% |
| 2 | 41 | 4.73% | 205 | 4.56% | 446 | 3.68% | 204 | 4.14% | 896 | 4.00% |
| 3 | 19 | 9.10% | 163 | 12.97% | 440 | 5.91% | 751 | 4.82% | 1373 | 5.61% |
| 4 | 4 | 8.79% | 90 | 17.93% | 410 | 15.47% | 695 | 6.50% | 1199 | 8.63% |
| 5 | 2 | 12.37% | 31 | 34.08% | 245 | 22.12% | 643 | 14.43% | 921 | 16.24% |
| 6 | 0 | 0.00% | 6 | 17.87% | 53 | 21.72% | 367 | 18.45% | 426 | 18.78% |
| 7–9 | - - | - - | - - | - - | 14 | 20.30% | 95 | 14.81% | 109 | 15.35% |
AF = atrial fibrillation; CHA2DS2-VASc = heart failure, hypertension, age 75 years or older, diabetes mellitus, previous stroke/transient ischemic attack, vascular disease, age 65 to 74 years, female