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

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

Variable	Value	n	Any breastfeeding	uRR (99% CI)	aRR^a (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

^aAdjusted for all variables in Table 1 except for private obstetrician, placenta praevia/accreta, large and small for gestational age and resuscitation

ISSN: 1756-0500