AFib Anticoagulation: Stroke vs Bleed Risk

CHADS2 stroke risk and HAS-BLED bleed risk side by side — the actual tradeoff clinicians weigh, not two separate scores in isolation. Not a substitute for a clinician’s judgment.

Not medical advice. CHADS2 and HAS-BLED are decision-support tools, not a treatment recommendation. The anticoagulation decision weighs these scores alongside a patient's full history — discuss your results with a clinician before acting on them.
AFib Anticoagulation: Stroke vs Bleed Risk
CHADS2 stroke risk and HAS-BLED bleed risk side by side — the actual tradeoff clinicians weigh, not two separate scores in isolation. Not a substitute for a clinician’s judgment.
Stroke Risk (CHADS2)

Score 0/6 — 1.9% annual ischemic stroke risk without anticoagulation

Open the full Stroke Risk (CHADS2) calculator
Bleed Risk (HAS-BLED)

Score 0/9 — 1.13 major bleeds per 100 patient-years on anticoagulation

Open the full Bleed Risk (HAS-BLED) calculator