ln DDE, n = 1,007, R^{2} = 0.328 | ln PCB,*n = 999, R^{2} = 0.302 | |||||||
---|---|---|---|---|---|---|---|---|

β | SE | P | Partial r^{2}^{†} | β | SE | P | Partial r^{2}^{†} | |

Intercept | −1.01 | 0.16 | −0.61 | 0.094 | ||||

Age at reference date (y) | 0.036 | 0.0022 | <0.0001 | 0.213 | 0.021 | 0.0013 | <0.0001 | 0.220 |

Triglycerides (g/L) | 0.16 | 0.032 | <0.0001 | 0.023 | 0.081 | 0.018 | <0.0001 | 0.030 |

Cholesterol (g/L) | 0.086 | 0.063 | 0.175 | 0.002 | 0.14 | 0.035 | <0.0001 | 0.012 |

Race (White = referent) | ||||||||

Black | 0.74 | 0.094 | <0.0001 | 0.045 | 0.25 | 0.053 | <0.0001 | 0.012 |

Current BMI tertile (0, 1, 2) | 0.27 | 0.046 | <0.0001 | 0.028 | 0.053 | 0.026 | 0.0427 | 0.005 |

BMI30-gain quintile (0, 1, 2, 3, 4) | −0.13 | 0.027 | <0.0001 | 0.0003 | −0.066 | 0.017 | <0.0001 | 0.015 |

Lactation history | <0.0001 | 0.018 | 0.330 | 0.003 | ||||

Never lactated (referent) | ||||||||

1-56 wk lactation | −0.15 | 0.060 | 0.015 | 0.087 | 0.058 | |||

>56 wk lactation | −0.46 | 0.095 | <0.0001 | 0.019 | 0.086 | |||

BMI30-gain × lactation interaction | NA^{‡} | 0.021 | 0.006 | |||||

BMI30-gain × 1-56 wk lactation | −0.056 | 0.024 | ||||||

BMI30-gain × >56 wk lactation | −0.075 | 0.040 |

NOTE: The BMI30 variable instead of current BMI tertiles was not significant for DDE, but BMI30 predicted almost identical results for PCBs. Lactation variables were categorical, and the

*P*is for the group. Models predicting lipid-corrected values had similar results: DDE:*R*^{2}= 0.291 (*P*< 0.0001, except as noted), intercept = −1.94,*β*s = age 0.035, race 0.075, BMI30-gain −0.13, current BMI tertile 0.26, triglycerides 0.034 (*P*= 0.28), cholesterol −0.28, lactation <57 weeks −0.14, >56 weeks −0.46. PCB:*R*^{2}= 0.268, intercept = −1.54,*β*s = age 0.021, race 0.27, BMI30-gain −0.066, BMI 0.048 (*P*= 0.066), triglycerides −0.043 (*P*= 0.016), cholesterol −0.226, lactation (*P*= 0.26 for group) <57 weeks 0.096, >56 weeks 0.032, BMI30-gain × lactation (*P*= 0.016 for group) <57 weeks −0.058, >56 weeks −0.078.↵* Fish intake (quartiles) was also significant in the ln PCB model for women with this information,

*n*= 796,*R*^{2}= 0.297, intercept = −0.63,*β*= 0.045 (fish quartile values = 0, 1, 2, 3; partial*r*^{2}= 0.009). The other*β*s in this model were almost identical to those for 796 women without fish intake, with similar*P*s (*R*^{2}= 0.288) and those in the model for 999 women.↵† Partial

*r*^{2}based on type I SS from GLM.↵‡ NA, not applicable.