Table 5.

Regression coefficients (β, mean ± standard error) for associations between maternal body burdens of PBDEs and concentrations of thyroid hormones in infants at 3 weeks and 3 months of age

Body burdena	3 weeks			3 months
	Total T3	Free T4	TSH	Total T3	Free T4	TSH
Unadjusted model
tetra-pentaPBDE	0.01 ± 0.03	−0.20 ± 0.28	0.004 ± 0.04	0.02 ± 0.02	0.14 ± 0.29	0.02 ± 0.04
BDE-153	0.03 ± 0.11	−0.36 ± 0.40	0.16 ± 0.19	0.14 ± 0.10	−0.33 ± 0.41	0.28 ± 0.17
Multivariate modelb
tetra-pentaPBDE	0.03 ± 0.03	−0.12 ± 0.30	0.02 ± 0.05	0.03 ± 0.03	−0.04 ± 0.30	0.03 ± 0.03
BDE-153	0.11 ± 0.11	−0.48 ± 0.42	0.01 ± 0.20	0.19 ± 0.11	−0.47 ± 0.44	0.15 ± 0.18

^aLn-transformed mother’s milk concentrations of tetra-pentaPBDE (sum of BDE-47, BDE-99 and BDE-100) and BDE-153 (N = 104-130)

^bAssociations adjusted for maternal age, pre-pregnancy BMI, smoking, alcohol consumption, infant’s sex and birth weight. *p ≤ 0.05