Table 3.

Total weekly isoflavone intake (mg/wk) by equol status among B4BCP study participants (232 postmenopausal women)

Equol nonproducers
Equol producers
P*
nMedianIQRMean (SD)nMedianIQRMean (SD)
Total isoflavones (mg/wk) from soy foods, among those reporting intake of ≥1 soy food/wk2930.964.161.9 (79.6)1243.2103.265.6 (77.4)0.94
Total isoflavones (mg/wk) from soy foods and supplements, among those reporting intake of ≥1 soy food or supplement/wk3141.490.579.5 (106.1)1256.9198.9129.8 (175.7)0.51
Total isoflavones (mg/wk) among those reporting intake of <1 soy food or supplement/wk1266.75.77.1 (4.4)636.37.07.7 (6.3)0.94
  • Abbreviation: IQR, interquartile range.

  • * P values were obtained using Mann-Whitney U tests.

  • Estimates based on self-reported intake of soy foods and isoflavone-containing dietary supplements.

  • Estimates based on foods queried in Block 1998 questionnaire.