Table 1

Results of epidemiologic studies on anemia and 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

Data are expressed as mean ± standard deviation. ABC, Anemia and Blood Transfusion in Critical Care; APACHE, Acute Physiology and Chronic Health Evaluation; ICU, intensive care unit; TRICC, Transfusion Requirements in Critical Care.

Napolitano Critical Care 2004 8(Suppl 2):S1   doi:10.1186/cc2832