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. 1999 Apr 29;3(2):57–63. doi: 10.1186/cc310

Figure 2.

Figure 2

Average pre-transfusion haemoglobin concentrations stratified by institution, APACHE II categories and transfusion status. Average pre-transfusion hemoglobin concentrations stratified by transfusion status, institution and high (> 15) versus low (≤ 15) APACHE II score. Institution 3 and 6 had the lowest concentrations overall and patients who received red cells. The influence of APACHE II scores appeared least important in centres (3 and 6) with a conservative approach to the administration of red cells. This graph also illustrates significant variations in haemoglobin concentrations in both APACHE II groups and in transfused and non-transfused patients.