. Author manuscript; available in PMC: 2016 Mar 23.

Published in final edited form as: J Nutr. 2013 Apr 17;143(6):986S–994S. doi: 10.3945/jn.112.172981

Table 1.

Spearman correlation coefficients describing bivariate associations between urine phytoestrogens and selected continuous sociodemographic and lifestyle variables for adults ≥20 y, NHANES 2003–2006¹

Variable	Genistein	Daidzein	Equol	DMA²	Enterodiol	Enterolactone
Age	0.02	0.02	−0.08^*	0.02	0.01	0.06^*
PIR	−0.01	0.02	0.06^*	0.09^*	0.11^*	0.07^*
Smoking (serum cotinine)	−0.03	−0.04	0	−0.08^*	−0.03	−0.12^*
Alcohol consumption³	−0.02	−0.06	−0.11^*	−0.11^*	0.02	−0.04
BMI	0.01	0.04	0.05^*	0.04	0.02	−0.08^*
Physical activity⁴	0.03	0.02	0.04	0	0.04	0.09^*
Urine creatinine	0.30^*	0.30^*	0.40^*	0.18^*	0.32^*	0.22^*

Excludes individuals who reported antibiotic use in the past 30 d. Sample sizes for urine phytoestrogens by variable are given in Supplemental Table 1.

DMA: O-desmethylangolensin.

Calculated as average daily number of “standard” drinks, i.e. (quantity×frequency)/365.25; 1 drink ≈ 15 g ethanol.

⁴

Calculated as total metabolic equivalent task (MET)-min/wk based on self-reported leisure time physical activity.

Significant correlation. P <0.05.