TY - JOUR T1 - The Outpatient Bleeding Risk Index predicted major bleeding in patients taking warfarin JF - Evidence Based Medicine JO - Evid Based Med SP - 120 LP - 120 DO - 10.1136/ebm.11.4.120 VL - 11 IS - 4 A2 - , Y1 - 2006/08/01 UR - http://ebm.bmj.com/content/11/4/120.abstract N2 - 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;20:1008–13.OpenUrlCrossRefPubMedWeb of Science 
 
 Q In patients taking warfarin, how accurate is the Outpatient Bleeding Risk Index for predicting major bleeding? Clinical impact ratings Internal medicine ★★★★★★☆ Cardiology ★★★★★★☆ Haematology ★★★★★★☆ Neurology ★★★★★☆☆ Design: retrospective cohort study to validate the previously developed Outpatient Bleeding Risk Index in a veteran population. Setting: a pharmacist run anticoagulation clinic at the Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, USA. Patients: 1269 patients (mean age 68 y, 92% men, 82% white) taking warfarin for <1 to >36 months. Description of prediction guide: the Outpatient Bleeding Risk Index (range 0–4) is a summation of 4 factors: (i) age (⩾65 y  =  1), (ii) history of stroke  =  1, (iii) history of gastrointestinal bleeding  =  1, and (iv) presence of ⩾1 serious comorbidity (recent myocardial … ER -