Tool for Assessing Bleeding Risk with Anticoagulants from The AnTicoagulation and Risk Factors In Atrial Fibrillation (ATRIA) Study
<-- Prior bleeding
<-- Age greater than 75 years
<-- Severe renal disease (dialysis or glumerular filtration rate less than 30 mL per minute)
<-- Anemia (hemoglobin less than 13 g/dL for men, hemoglobin less than 12 g/dL for women)
<-- Hypertension
Score --> numberscore1=(Q1)+(Q2)+(Q3)+(Q4)+(Q5) out of 10
Recommendation (Risk estimation from validation cohort) --> interpretationscore2=(Q1)+(Q2)+(Q3)+(Q4)+(Q5);score2>4?'High Risk - Number Needed to Harm in 1 year - 120':score2>3?'Moderate Risk - Number Needed to Harm in 1 year - 41':'Low Risk - Number Needed to Harm in 1 year - 19'
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reference:
#1 Fang MC, Go AS, Chang Y, Borowsky LH, Pomernacki NK, Udaltsova N, Singer DE. A new risk scheme to predict warfarin-associated hemorrhage: The ATRIA (Anticoagulation and Risk Factors in Atrial Fibrillation) Study. J Am Coll Cardiol. 2011 Jul 19;58(4):395-401.

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