Table 4.
Odds ratios and 95 % confidence intervals for the association between soya protein 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) | 2·04 | 1·38, 3·03 | <0·001 |
| Ethnicity (Black v. White) | 0·39 | 0·10, 1·43 | 0·2 |
| Urinary iodine (0·1 μg/ml intervals) | 1·47 | 1·10, 1·97 | 0·009 |
| Soya protein* | 1·06 | 0·31, 3·69 | 0·9 |
| Women | |||
| Age (10-year intervals) | 1·16 | 0·91, 1·48 | 0·2 |
| Ethnicity (Black v. White) | 0·44 | 0·21, 0·92 | 0·03 |
| Urinary iodine (0·1 μg/ml intervals) | 1·06 | 0·84, 1·34 | 0·6 |
| Soya protein* | 2·69 | 1·34, 5·30 | 0·005 |
TSH, thyroid-stimulating hormone.
*
For soya protein, the highest and lowest quintiles were compared. Midpoints of the lowest and highest quintiles of soya protein were respectively 0·008 and 6·91 g/d for men and 0·004 and 6·92 g/d for women.