Table 1.

Atrial fibrillation stroke risk score and bleeding risk score acronyms

Stroke Risk Scores
CHADS2 • Congestive heart failure • Hypertension • Age ≥75 years • Diabetes mellitus • Stroke or transient ischemic attack	CHADS2-VASc • Congestive heart failure • Hypertension • Age ≥75 years • Diabetes mellitus • Stroke or transient ischemic attack • Vascular disease • Age 65-74 years • Sex category	R2CHADS2 • Renal dysfunction • Congestive heart failure • Hypertension • Age ≥75 years • Diabetes mellitus • Stroke or transient ischemic attack
Bleeding Risk Scores
OBRI (Outpatient Bleeding Risk Index) • Age≥65 • History of stroke • History of gastrointestinal bleeding • One or more of the following  • Recent myocardial infarction  • Hematocrit <30%  • Serum creatinine >1.5 mg/dL  • Diabetes mellitus	HEMORR2HAGES • Hepatic or renal disease • Ethanol abuse • Malignancy • Older age (>75 years) • Reduced platelet count or function • Rebleeding risk (history of prior bleed) • Hypertension • Anemia • Genetic factors • Excessive fall risk • Stroke	HAS-BLED • Hypertension • Abnormal renal and/or hepatic function • Stroke • Bleeding tendency/predisposition • Labile INR on warfarin • Elderly (age >65 years) • Drugs (aspirin or NSAIDs) and/or alcohol