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Table 7 Findings from the Sapporo cohort on the associations between exposures and birth size

From: The Hokkaido Birth Cohort Study on Environment and Children’s Health: cohort profile—updated 2017

Exposures

Outcome

Number

Findings

Reference

PCDD/PCDFs

Birth weight

398

Significant decrease. Individual congener assessment found 2,3,4,7,8-PeCDF had a significant negative influence (per log10 unit: β = 24.5 g, 95% CI 387.4 to 61.5).

[33]

PCBs

Birth weight

367

No association.

[36]

PFASs

Birth weight

428

PFOS was negatively correlated (per log10 unit: β = 269.4 g, 95% CI 465.7 to 73.0).

[34]

Ponderal index

177

PFOA was negatively associated (per log10 unit: β = 0.73 kg/m3, 95% CI 1.44 to 0.02).

[26]

Cord adipokines

168

PFOS was positively associated with adiponectin (per log10 unit: β = 0.12, 95% CI 0.01 to 0.22).

[37]

DEHP

Ponderal index

167

Significant decrease (per log10 unit: β = −1.28, 95% CI 2.43 to 0.13).

[35]

Cord adipokines

167

Significant decrease in leptin among girls (per log10 unit: β = −0.31, 95% CI 0.52 to 0.10). Significant increase in adiponectin among boys (per log10 unit: β = 4.63, 95% CI 0.77 to 8.49).

Me-Hg

Birth weight/SGA

367

No association with birth weight. The risk of SGA by weight decreased with increasing Me-Hg.

[36]

  1. PCDD polychlorinated dibenzo-p-dioxin, PCDF polychlorinated dibenzofuran, PCB polychlorinated biphenyls, PFASs perfluorinated alkyl substances, PFOS perfluorooctanoic sulfonate, PFOA perfluorooctanoic acid, DEHP di(2-ethylhexyl) phthalate, Me-Hg methylmercury, SGA small for gestational age