Age ≥ 65 years	Recent myocardial infarction
	History of gastrointestinal bleeding	Hematocrit ≤ 30%
	History of stroke	Serum creatinine >1.5mg/dl (= 132.6μmol/l )
		Diabetes mellitus

	OBRI Score² :
	Interpretation :
	References :
	1. Beyth RJ, Quinn LM, Landefeld CS. Prospective evaluation of an index for predicting the risk of major bleeding in outpatients treated with warfarin. Am J Med. 1998;105:91–9. PubMed   PDF
	2. Aspinall SL, DeSanzo BE, Trilli LE, et al. Bleeding Risk Index in an anticoagulation clinic. Assessment by indication and implications for care. J Gen Intern Med. 2005 November; 20(11): 1008–1013. Pubmed   [PDF]