Table 4: Correlation analysis of daidzein and genistein between the tissue compartments of amniotic fluid, maternal serum during pregnancy and at birth, cord serum, and breast milk.

Amniotic fluid daidzein Amniotic fluid genistein Serum in pregnancy daidzein Serum in pregnancy genistein Serum at birth daidzein Serum at birth genistein Cord serum daidzein Cord serum genistein Breast milk daidzein Breast milk genistein Amniotic fluid daidzein Rho 1.000 0.784** 0.244** 0.204** 0.261* 0.165 0.263* 0.234* 0.210 0.265* P 0.000 0.000 0.003 0.011 0.106 0.028 0.034 0.053 0.018 N 300.000 300.000 206.000 206.000 94.000 97.000 70.000 82.000 86.000 80.000 Amniotic fluid genistein Rho 0.784** 1.000 0.233** 0.278** 0.352** 0.322** 0.351** 0.289* 0.226* 0.208 P 0.000 0.001 0.000 0.000 0.001 0.003 0.009 0.036 0.064 N 300.000 300.000 206.000 206.000 94.000 97.000 70.000 82.000 86.000 80.000 Serum in pregnancy daidzein Rho 0.244** 0.233** 1.000 0.853** 0.299** 0.257* 0.352** 0.304** 0.269* 0.343** P 0.000 0.001 0.000 0.003 0.010 0.003 0.005 0.015 0.002 N 206.000 206.000 215.000 215.000 95.000 98.000 71.000 82.000 81.000 77.000 Serum in pregnancy genistein Rho 0.204** 0.278** 0.853** 1.000 0.287** 0.267** 0.313** 0.288** 0.278* 0.373** P 0.003 0.000 0.000 0.005 0.008 0.008 0.009 0.012 0.001 N 206.000 206.000 215.000 215.000 95.000 98.000 71.000 82.000 81.000 77.000 Serum at birth daidzein Rho 0.261* 0.352** 0.299** 0.287** 1.000 0.885** 0.824** 0.634** 0.168 0.078 P 0.011 0.000 0.003 0.005 0.000 0.000 0.000 0.197 0.562 N 94.000 94.000 95.000 95.000 97.000 94.000 64.000 74.000 61.000 57.000 Serum at birth genistein Rho 0.165 0.322** 0.257* 0.267** 0.885** 1.000 0.704** 0.646** 0.100 0.031 P 0.106 0.001 0.010 0.008 0.000 0.000 0.000 0.446 0.824 N 97.000 97.000 98.000 98.000 94.000 100.000 66.000 77.000 60.000 55.000 Cord serum daidzein Rho 0.263* 0.351** 0.352** 0.313** 0.824** 0.704** 1.000 0.865** 0.452** 0.233 P 0.028 0.003 0.003 0.008 0.000 0.000 0.000 0.002 0.149 N 70.000 70.000 71.000 71.000 64.000 66.000 75.000 72.000 44.000 40.000 Cord serum genistein Rho 0.234* 0.289** 0.304** 0.288** 0.634** 0.646** 0.865** 1.000 0.540** 0.427** P 0.034 0.009 0.005 0.009 0.000 0.000 0.000 0.000 0.004 N 82.000 82.000 82.000 82.000 74.000 77.000 72.000 85.000 49.000 44.000 Breast milk daidzein Rho 0.210 0.226* 0.269* 0.278* 0.168 0.100 0.452** 0.540** 1.000 0.794** P 0.053 0.036 0.015 0.012 0.197 0.446 0.002 0.000 0.000 N 86.000 86.000 81.000 81.000 61.000 60.000 44.000 49.000 90.000 82.000 Breast milk genistein Rho 0.265* 0.208 0.343** 0.373** 0.078 0.031 0.233 0.427** 0.794** 1.000 P 0.018 0.064 0.002 0.001 0.562 0.824 0.149 0.004 0.000 N 80.000 80.000 77.000 77.000 57.000 55.000 40.000 44.000 82.000 84.000

**Correlation is significant at the 0.01 level (2-tailed). *Correlation is significant at the 0.05 level (2-tailed).