Total Criteria Point Count:0
* Required

Risk of Major Bleeding

0 points:2% @ 3 mo’s, 3% @ 12 mo’s
1-2 points:5% @ 3 mo’s, 12% @ 12 mo’s
3-4 points:23% @ 3 mo’s, 48% @ 12 mo’s


  1. Kearon CGent MHirsh J et al. Extended anticoagulation compared to placebo after three months of therapy for a first episode of idiopathic venous thromboembolism. N Engl J Med. 1999;340901- 907
  2. Wells PS, Forgie MA, Simms M, et al. The outpatient bleeding risk index: validation of a tool for predicting bleeding rates in patients treated for DVT and PE. Arch Intern Med. 2003; 163: 917-20.
  3. 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 Aug;105(2):91-99.

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