. 2010 Sep 5;20(5):377–384. doi: 10.2188/jea.JE20090185

Table 1. 24-hour urinary isoflavonoid excretion by equol phenotype in participants on a regular diet (µmol/24 hours).

Urinary isoflavone	Equol producers (n = 104)^a		Nonproducers (n = 76)^a		P^b

	Mean ± SD	Range	Mean ± SD	Range
Equol	5.75 ± 11.02	0–76.56	0.35 ± 1.99	0–15.56	<0.001
Daidzein	8.24 ± 10.70	0–52.72	12.53 ± 12.00	0–54.77	0.004
Dihydrodaidzein	3.04 ± 5.09	0–34.47	4.21 ± 6.52	0–32.73	0.43
O-DMA^c	1.81 ± 2.76	0–76.56	3.42 ± 5.61	0–32.32	0.09
Genistein	4.09 ± 5.48	0–26.50	5.15 ± 5.69	0–28.54	0.08
Dihydrogenistein	3.74 ± 8.34	0–63.44	2.64 ± 4.45	0–42.54	0.35
Glycitein	1.63 ± 2.14	0–9.57	2.19 ± 2.56	0–9.76	0.16
Dihydroglycitein	0.01 ± 0.09	0–0.92	0.02 ± 0.20	0–1.76	0.82
Total isoflavone^d	26.27 ± 31.92	0–148.31	30.17 ± 30.07	0–115.13	0.12

^aDetermined by soy-isoflavone challenge.

^bEquol producers and nonproducers compared using Mann-Whitney U test.

^cO-DMA: O-Desmethylangolensin.

^dTotal isoflavone = daidzein plus its metabolites dihydrodaidzein, equol, O-desmethylangolensin; genistein plus its metabolite dihydrogenistein; and glycitein plus its metabolite dihydroglycitein.