Subgroup analyses
The results of univariate and multivariable Cox regression
analysis in the a priori defined subgroups are presented
in Figure 2. Blood transfusion was associated with
a lower risk of in-hospital death in patients aged from 66
to 80 years, in patients admitted to the ICU after non-cardiovascular
surgery, in patients with SAPS II score
greater than 50 and SOFA score more than four on
admission to the ICU, and in patients with severe sepsis.