Table 2.

Maternal pre-pregnancy body mass index and change in maternal iron status from mid to late pregnancy.

	ΔSF (μg/L)		ΔsTfR (nmol/L)		ΔZPP/H (μmol/mol heme)		ΔBI (mg/kg)
	Coeff.	P-value	Coeff.	P-value	Coeff.	P-value	Coeff.	P-value
Unadjusted analysis
Maternal pre-pregnancy BMI (kg m−2)
Normal weight (reference)	-	-	-	-	-	-	-	-
Underweight	−3.2	0.24	0.61	0.43	−2.1	0.48	−0.43	0.18
Overweight	−2.6	0.32	−2.7	<0.001	−3.0	0.30	0.22	0.47
Obese	6.5	0.13	−4.8	<0.001	−2.8	0.56	1.4	0.01
Adjusted analysis
Maternal pre-pregnancy BMI (kg m−2)
Normal weight (reference)	-	-	-	-	-	-	-	-
Underweight	−0.92	0.42	0.68	0.37	−2.2	0.42	−0.11	0.63
Overweight	0.69	0.54	−2.5	0.001	−3.1	0.25	0.31	0.19
Obese	3.5	0.06	−4.6	<0.001	−3.8	0.39	1.1	0.004
Maternal age (y)	0.11	0.30	−0.09	0.20	−0.11	0.66	0.05	0.04
Iron supplementation
No (reference)	-	-	-	-	-	-	-	-
Yes	6.3	<0.001	−4.7	<0.001	−18	<0.001	1.8	<0.001
Gestational weight gain
Adequate (reference)	-	-	-	-	-	-	-	-
Low	0.80	0.59	0.17	0.87	−3.3	0.37	0.24	0.43
Excessive	2.2	0.02	−0.18	0.77	−1.4	0.54	0.33	0.09
Birth weight (kg)	−0.003	0.003	0.004	<0.001	0.009	<0.001	−0.001	<0.001

Maternal iron status in mid pregnancy and maternal hsCRP concentration in mid and late pregnancy were included as additional covariates in models.