Table 2.

Correlation matrix of urinary phytoestrogen excretion and serum phytoestrogen levels (n = 284–333)

Urinary excretion without (a) and with (b) adjustment for urinary creatinine concentration (ng/ml; μg/mmol creatinine)
Daidzein
Genistein
Glycitein
O-DMA
Equol
Isoflavones
Enterodiol
Enterolactone
Lignans
ababababababababab
Serum levels (ng/ml)Isoflavones0.72*0.84*0.75*0.88*0.63*0.76*0.43*0.47*0.140.190.74*0.85*0.070.02−0.03−0.070.01−0.04
    Daidzein0.80*0.91*0.69*0.79*0.64*0.77*0.46*0.46*0.110.150.76*0.89*0.050.030.01−0.010.030.00
    Genistein0.66*0.76*0.76*0.89*0.60*0.71*0.35*0.39*0.130.180.70*0.79*0.06
    Glycitein0.61*0.68*0.62*0.68*0.68*0.81*0.36*0.33*0.100.110.61*0.66*0.120.05−0.07−0.16−0.02−0.12
    O-DMA0.36*0.47*0.26*0.34*0.27*0.36*0.66*0.82*0.040.060.36*0.45*−0.02−0.01−0.02−0.010.000.02
    Equol0.110.180.160.24*0.080.150.180.22*0.62*0.81*0.170.24*−0.04−0.010.020.060.010.06
Lignans−0.020.03−0.13−0.10−0.11−0.090.040.050.030.05−0.06−0.020.37*0.47*0.77*0.91*0.76*0.93*
    Enterodiol0.050.080.000.030.040.08−0.010.010.020.040.040.070.67*0.83*0.23*0.28*0.33*0.40*
    Enterolactone−0.03−0.01−0.15−0.13−0.13−0.130.020.010.020.03−0.08−0.060.27*0.34*0.81*0.94*0.75*0.90*
  • Note: Pearson correlation coefficients on log-transformed data. Correlation coefficients between urine and serum levels are indicated in bold for particular phytoestrogens.

  • *P < 0.001.

  • P < 0.05.

  • P < 0.01.