Figure 3.

Intensive care unit anemia point system. The correspondence between intensive care unit anemia points (see the text and Table 4) and probability for meeting criteria for late anemia is shown. For example, a surgical patient (11 points) with a lactate concentration of 4.0 g/dl (6 points) and a hemoglobin level of 9 g/dl (15 points) acquires 32 points, which corresponds to a risk of late anemia of 42.4%. The maximum score does not correspond to a probability of 1.00 because patients dying in the first week will never meet late anemia criteria.