Extremely preterm | Very Preterm | Late preterm | p-value | Total | |
Mean ± SD | |||||
Pre-transfusion Hb | 9.06 ± 2.07 | 9.83 ± 2.06 | 10.05 ± 2.07 | 0.017 | 9.75 ± 2.09 |
Volume of blood (mL/kg) transfused | 16.5 ± 3.85 | 16.74 ± 4.3 | 14.14 ± 3.52 | <0.001 | 15.61 ± 4.09 |
Number of transfusions (mean number) | 5.61 ± 2.38 | 3.43 ± 1.94 | 2.64 ± 1.37 | <0.001 | 3.59 ± 2.38 |
Day of life of transfusion | 15.09 ± 14.8 | 19.14 ± 14.5 | 14.36 ± 9.8 | 0.031 | 16.22 ± 13 |