Age

Risk factors

Congestive heart failure / LV dysfunctionModerate-severe systolic or diastolic dysfunction on echo, or HF requiring treatment

1 pt

HypertensionResting BP >140/90 mmHg on ≥2 occasions, or antihypertensive treatment

1 pt

Diabetes mellitusFasting glucose >125 mg/dL (7 mmol/L) or treatment with oral hypoglycaemic agent or insulin

1 pt

Stroke / TIA / thromboembolism2 pts — prior stroke, TIA, or systemic thromboembolism

2 pts

Vascular diseasePrior MI, peripheral arterial disease, or aortic plaque

1 pt

Female sexSex category — adds 1 pt; does not independently indicate anticoagulation

1 pt

Score 0(Very low)0%

Score 1(Low-moderate)~1.3%

Score 2(Moderate-high)~2.2%

Score 3~3.2%

Score 4~4.0%

Score 5(High)~6.7%

Score 6~9.8%

Score 7~9.6%

Score 8~12.5%

Score 9~15.2%

Unadjusted rates per 100 patient-years, Euro Heart Survey cohort (Lip GY et al. Chest 2010, Table 3). Rates in other AF registries vary.