Figure 3. Cumulative Relative Frequency of Bleeding Independently Associated With Mortality After Noncardiac Surgery (BIMS), Transfusion of 1 or More Units of Red Blood Cells, Nadir Hemoglobin Less Than 7 g/dL and Bleeding Associated With Reintervention Within the First 30 Postoperative Days.

BIMS is a composite outcome of postoperative transfusion, hemoglobin less than 7 g/dL (to convert hemoglobin to grams per liter, multiply by 10), or bleeding leading directly to death.