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. Author manuscript; available in PMC: 2018 Jul 26.
Published in final edited form as: Public Health Nutr. 2015 Oct 9;19(8):1464–1470. doi: 10.1017/S1368980015002943

Table 3.

Odds ratios and 95 % confidence intervals for the association between soya isoflavones and TSH concentrations >5 mIU/l v. ≤5 mIU/l, controlling for demographic characteristics and urinary iodine concentration, among participants (295 men and 548 women) of the Adventist Health Study-2

OR 95 % CI P value
Men
 Age (10-year intervals) 2·05 1·38, 3·03 <0·001
 Ethnicity (Black v.White) 0·38 0·10, 1·43 0·2
 Urinary iodine (0·1 μg/ml intervals) 1·47 1·10, 1·97 0·009
 Soya isoflavones (total)* 1·05 0·27, 4·07 0·9
Women
 Age (10-year intervals) 1·14 0·89, 1·44 0·3
 Ethnicity (Black v. White) 0·44 0·21, 0·92 0·03
 Urinary iodine (0·1 μg/ml intervals) 1·09 0·86, 1·37 0·5
 Soya isoflavones (total)* 4·17 1·73, 10·06 0·001

TSH, thyroid-stimulating hormone.

*

For soya isoflavones, the highest and lowest quintiles are compared. Midpoints of the lowest and highest quintiles of soya isoflavones were respectively 0·006 and 25·46 mg/d for men and 0·002 and 25·05 mg/d for women.