The need for blood transfusion was significantly different between the three groups (P < 0.001). Pairwise comparisons (Table 3) showed that the percentage of patients who required transfusion was lower in non-anaemic patients compared to correctly treated patients (2.2% vs. 24%, P < 0.001) and incorrectly treated patients (2.2 vs. 26.5%, P < 0.001) but not between correctly and incorrectly managed anaemic patients (P > 0.05).
Table 3. Pairwise comparisons between anaemics, correctly and incorrectly treated groups