Table 2

Changes in urinary equol to daidzein concentration ratios in postmenopausal women1
Equol producer Equol non-producer P-value
(n = 21) (n = 13) 3-way ANOVA3
Main effects Interactions
FOS2 Control FOS Control FOS Time Equol state FOS × time FOS × equol state Time × equol state FOS × time × equol state
Baseline −1.03 ± 0.46 −1.09 ± 0.733 −1.94 ± 0.30 −1.94 ± 0.44
After 1 week −0.77 ± 0.69 −0.74 ± 0.73 −2.04 ± 0.19 −2.07 ± 0.33 0.802 0.185 0.000 0.702 0.964 0.006 0.960
After 2 weeks −0.92 ± 0.77 −0.82 ± 0.86 −1.83 ± 0.48 −1.62 ± 0.83 0.759 0.097 0.000 0.400 0.864 0.516 0.801
P-value4 (between baseline and after 1 week)
0.343 0.120 0.794 0.890
P-value4 (between baseline and after 2 weeks)
0.578 0.432 0.564 0.383
P-value4 (between 1 and 2 weeks)
0.690 0.921 0.166 0.091

1Urinary equol to daidzein concentration ratios; (equol/daidzein) log. All values are expressed as mean ± SD.

2FOS, fructooligosaccharides.

3Three-way ANOVA (factors of FOS intervention, time, and equol status) was performed to determine the effect of dietary intervention on the urinary equol to daidzein concentration ratios.

4The changes in the urinary equol to daidzein concentration ratios in each group were evaluated by repeated-measures ANOVA and the Tukey post hoc test.

Tousen et al.

Tousen et al. Nutrition Journal 2013 12:127   doi:10.1186/1475-2891-12-127

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