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Table 4 Associations between exposure to PCBs and PBDEs and birth weight among female/male infants

From: Prenatal exposure to polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) may influence birth weight among infants in a Swedish cohort with background exposure: a cross-sectional study

 

Female infants

Male infants

 

βa

SEb

p

N

βa

SEb

p

N

Multivariate modelc

   di-ortho PCBsd

42

99

0.7

161

200

77

0.01*

185

   di-ortho PCBsd – restrictede

88

136

1.0

110

189

88

0.03*

144

   PBDE(4)f

32

70

0.7

161

−126

62

0.04*

185

   PBDE(4)f – restrictede

−20

104

0.8

110

−162

73

0.03*

144

Multivariate model including gestational lengthg

   di-ortho PCBsd

149

123

0.2

110

141

77

0.07

144

   PBDE(4)f

−47

93

0.6

110

−139

64

0.03*

144

  1. aRegression coefficient, i.e. change in birth weight per 1-unit increase in ln-transformed contaminant concentration in breast milk.
  2. bStandard error.
  3. cDi-ortho PCB and PBDE(4) were included in the same model. Other covariates included were age of the mother, pre-pregnancy BMI, weight gain during pregnancy, education, smoking and infant sex.
  4. dSum of PCB 138, PCB 153 and PCB 180.
  5. eMultivariate regression analysis restricted to individuals with data on gestational length.
  6. fSum of BDE-47, BDE-99, BDE-100 and BDE-153.
  7. gGestational length was added to the covariates in the multivariate model.
  8. *p≤0.05.