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Blood group distribution of the study participants who were transfused and of the donated umbilical cord blood samples analysed for haematopoietic stem cell transplantation
| Blood group | Transfused neonates <32 weeks (N=454) | UCB samples (N=329) |
|---|---|---|
| 0+, % | 36.1 | 36.6 |
| A+, % | 36.2 | 33.5 |
| B+, % | 9.3 | 11.7 |
| AB+, % | 5.7 | 2.9 |
| 0−, % | 6.2 | 6.7 |
| A−, % | 5.7 | 7.1 |
| B−, % | 0.8 | 1.1 |
| AB−, % | None | 0.4 |
