Table 2.

Adjusted Regression coefficients (β)^a for associations between prenatal growth measures^b and maternal serum concentrations of PCB-118, PCB-153, and PCB-187 in a sample of British girls.

	PCB-118	p-value	PCB-153	p-Value	PCB-187	p-Value
Birth length c(cm) (n = 363)
Unadjusted β (95% CI)	0.12 (−0.16, 0.41)	0.39	−0.04 (−0.12, 0.04)	0.30	−0.34 (−0.72, 0.05)	0.09
Multivariate β (95% CI)	0.08 (−0.21, 0.36)	0.60	−0.04 (−0.12, 0.04)	0.29	−0.33 (−0.73, 0.06)	0.10
Ponderal Index d(n = 357)
Unadjusted β (95% CI)	−0.03 (−0.06, 0.01)	0.10	−0.01 (−0.01, 0.00)	0.24	−0.02 (−0.07, 0.02)	0.30
Multivariate β (95% CI)	−0.03 (−0.06, 0.01)	0.10	0.00 (−0.01, 0.01)	0.97	0.00 (−0.04, 0.05)	0.91
Gestational agee (wks) (n = 444)
Unadjusted β (95% CI)	0.02 (−0.15, 0.18)	0.85	−0.01 (−0.06, 0.04)	0.72	−0.12 (−0.37, 0.13)	0.35
Multivariate β (95% CI)	0.02 (−0.15, 0.18)	0.82	−0.01 (−0.06, 0.04)	0.80	−0.11 (−0.36, 0.14)	0.38

^aPer 10 unit (ng/g lipid) increase in analyte. In multivariate models maternal pre-pregnancy BMI, and gestational age at maternal sample collection were entered as continuous variables (rather than categorical as presented in Table 1).

^bFor birthweight, significant interactions were observed with educational status; thus, final stratified results for birthweight are provided in Table 3.

^cAdjusted for sampling design, previous births and maternal pre-pregnancy BMI.

^dAdjusted for sampling design, previous births, maternal pre-pregnancy BMI, maternal tobacco use during pregnancy.

^eAdjusted for sampling design, gestational age at maternal sample collection.