From: Scope of the problem: epidemiology of anemia and use of blood transfusions in critical care
 | ABC Trial [2] (Western Europe) | CRIT Study [3] (USA) | TRICC Investigators [9] (Canada) | North Thames Blood Interest Group [5] (UK) |
---|---|---|---|---|
n | 3534 | 4892 | 5298 | 1247 |
Mean admission hemoglobin (g/dl) | 11.3 ± 2.3 | 11.0 ± 2.4 | 9.9 ± 2.2 | - |
Percentage of patients transfused in ICU | 37.0% | 44.1% | 25% | 53.4% |
Mean transfusions per patient (units) | 4.8 ± 5.2 | 4.6 ± 4.9 | 4.6 ± 6.7 | 5.7 ± 5.2 |
Mean pretransfusion hemoglobin (g/dl) | 8.4 ± 1.3 | 8.6 ± 1.7 | 8.6 ± 1.3 | 8.5 ± 1.4 |
Mean ICU length of stay (days) | 4.5 | 7.4 ± 7.3 | 4.8 ± 12.6 | - |
ICU mortality | 13.5% | 13.0% | 22% | 21.5% |
Hospital mortality | 20.2% | 17.6% | - | - |
Admission APACHE II (mean) | 14.8 ± 7.9 | 19.7 ± 8.2 | 18 ± 11 | 18.1 ± 9.1 |