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Table 5 Association between estimated iodine intake from the I-FFQ and thyroid biomarkersa

From: Validation and reproducibility of a new iodine specific food frequency questionnaire for assessing iodine intake in Norwegian pregnant women

 

Unadjusted coefficients (95% CI)

Adjusted coefficients (95% CI)b

 

P

R2

 

P

R2

TSH (mIU/L)

22.2 (−3.2, 47.6)

0.087

0.024

12.5 (−12.0, 37.1)

0.312

0.107

fT3 (pmol/L)

−11.5 (− 54.2, 31.2)

0.595

0.002

−11.6 (−51.7, 28.5)

0.567

0.101

fT4 (pmol/L)

−5.0 (−16.2, 6.3)

0.382

0.006

−5.6 (−16.5, 5.3)

0.314

0.107

  1. fT3, free triiodothyronine; fT4, free thyroxine, TSH, thyroid stimulating hormone
  2. an = 123 for TSH; n = 124 for fT3; n = 122 for fT4
  3. bAdjusted for BMI, age, nicotine use while pregnant and education. Categories for nicotine use: 0 = no, 1 = yes; categories for education 0 ≤ high school, 1 ≥ university/ university college
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Nutrition Journal

ISSN: 1475-2891

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