Estimated relative risk ratios (95% CI) comparing each group to the referent Group 4 for ten-fold increase in maternal serum concentrations (ng/g of lipid) of <i>o,p</i>’-DDT, <i>p,p</i>’-DDT and <i>p,p</i>’-DDE with and without adjusting for baseline risk factors.

<p>¹ Adjusted for maternal pre-pregnancy BMI, number of years in the USA, duration of breastfeeding and birth weight.</p><p>* P-value < 0.05 based on two-sided test</p><p>BMI, body mass index; CI, confidence interval; DDE, dichlorodiphenyldichloroethylene; DDT, dichlorodiphenyltrichloroethane.</p><p>Estimated relative risk ratios (95% CI) comparing each group to the referent Group 4 for ten-fold increase in maternal serum concentrations (ng/g of lipid) of <i>o,p</i>’-DDT, <i>p,p</i>’-DDT and <i>p,p</i>’-DDE with and without adjusting for baseline risk factors.