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Table 7 An example of the result of multiple regression analysis

From: Serum levels of hydroxylated PCBs, PCBs and thyroid hormone measures of Japanese pregnant women

Dependent variable

fT4

Standardized β

95 % CI

p

ΣOH-PCBs_16 isomers

0.059

−0.046, 0.078

0.613

Parity

−0.104

−0.085, 0.030

0.346

Urinary iodine

−0.082

−0.033, 0.014

0.406

Age

−0.051

−0.007, 0.004

0.406

Smoking before pregnancy

−0.019

−0.082, 0.067

0.841

Maternal weight before pregnancy

−0.004

−0.210, 0.202

0.968

Coefficient of determination R2

0.030

  1. Models adjusted for maternal age, maternal weight before pregnancy, urinary I, smoking before pregnancy and parity
  2. OH-PCBs, PCBs, fT4, TSH, urinary iodine and maternal weight were log-transformed for analysis