Table 4 |
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| Concentration of thyroid indices if urinary iodine concentration (UIC) <50 μg/L or ≥50 μg/L and <100 μg/L or ≥100 μg/L | ||||||||
| Tg (μg/L) | P | TSH (mU/L) | P | Free T4 (pmol/L) | P | Free T3 (pmol/L) | P | |
| Mean (95% Cl) | Mean (95% Cl) | Mean (95% Cl) | Mean (95% Cl) | |||||
| UIC < 50 (μg/L) | 15.6 (14.0,17.3) | 0.001 | 1.7 (1.6, 1.9) | 0.669 | 14.7 (14.3,15.2) | 0.271 | 6.1 (6.0,6.2) | 0.002 |
| UIC ≥ 50 (μg/L) | 12.3 (11.1, 13.5) | 1.7 (1.6, 1.8) | 15.0 (14.6, 15.3) | 5.9 (5.8, 6.0) | ||||
| UIC < 100 (μg/L) | 13.9 (12.8, 14.9) | 0.000 | 1.7 (1.6, 1.8) | 0.236 | 14.9 (14.5, 15.2) | 0.630 | 6.0 (6.0, 6.1) | 0.001 |
| UIC ≥ 100 (μg/L) | 10.3 (8.8, 12.1) | 1.8 (1.6,1.9) | 15.0 (14.5, 15.5) | 5.9 (5.8, 6.0) | ||||
Tg and TSH values presented as geometric mean (95% Confidence Interval) and free T4 and T3 values presented as mean (95% Confidence Interval) as determined by regression analysis. Values of 50 μg/L and 100 μg/L based on ICCIDD/UNICEF/WHO [7] recommended cut-offs for UIC. Thyroglobulin = Tg.
Skeaff et al. Nutrition Journal 2012 11:31 doi:10.1186/1475-2891-11-31
