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Table 2 Unadjusted and adjusted relative risks (uRR; aRR) for transfusion with any breastfeeding by haemoglobin concentration prior to transfusion

From: Haemoglobin concentration following postpartum haemorrhage and the association between blood transfusion and breastfeeding: a retrospective cohort study

Variable Value n Any breastfeeding uRR (99% CI) aRRa (99% CI)
Transfusion Haemoglobin < 70 g/L and transfusion 686 539 (79%) 0.90 (0.86–0.95) 0.90 (0.86–0.95)
Haemoglobin 70–90 g/L and transfusion 792 644 (81%) 0.93 (0.89–0.98) 0.94 (0.90–0.98)
Haemoglobin > 90 g/L and transfusion 350 283 (81%) 0.93 (0.87–0.99) 0.94 (0.88–1.00)
No transfusion (reference) 13,623 11,862 (87%) 1.00 1.00
  1. aAdjusted for all variables in Table 1 except for private obstetrician, placenta praevia/accreta, large and small for gestational age and resuscitation