Maternal urinary concentrations of bisphenol A during pregnancy and birth size in children from the Odense Child Cohort

Table 2 Differences in birth outcomes in all liveborn offspring, and 95% confidence intervals in adjusted linear regression according to quartiles of osmolality adjusted bisphenol A (BPA) concentrations in urine from 832 pregnant women

BPA (ng/ml(osm))	Birth weight(g)			Birth length (cm)			Head circcumference (cm)			Abdominal circumference (cm)
BPA (ng/ml(osm))	n	β, 95% CI	p-value	n	β, 95% CI	p-value	n	β, 95% CI	p-value	n	β, 95% CI	p-value
All children
BPA quartile
Q1: LOD to < 0.54	208	Reference		207	Reference		206	Reference		206	Reference
Q2: 0.54 to < 1.33	208	-89 (-167; -11)	0.03	206	-0.30 (-0.64; 0.05)	0.08	205	-0.09 (-0.65; 0.47)	0.76	204	-0.61 (-1.34; 0.11)	0.10
Q3: 1.33 to < 2.41	208	-51 (-129; 27)	0.19	207	-0.14 (-0.48; 0.20)	0.42	207	0.27 (-0.30; 0.83)	0.35	206	-0.02 (-0.75; 0.71)	0.95
Q4: ≥ 2.41	208	-92 (-170; -14)	0.02	207	-0.29 (-0.63; 0.05)	0.09	207	0.45 (-0.11; 1.01)	0.12	205	-0.08 (-0.81; 0.65)	0.83
P-trend^a			0.06			0.19			0.06			0.77

Abbreviations: CI, confidence interval; LOD, limit of detection; BPA, bisphenol A
All estimates adjusted for maternal age, maternal pre-pregnancy BMI, maternal smoking during pregnancy, maternal educational status, gestational age at birth, offspring sex and parity
^ap- trend across quartiles of BPA concentrations

ISSN: 1476-069X