Table 2 Estimated mean concentrations of TSH, FT4, and FT3 in the study individuals divided according to their Ferritin levels.

From: Iron deficiency is associated with Hypothyroxinemia and Hypotriiodothyroninemia in the Spanish general adult population: Di@bet.es study

 

Ferritin (µg/L)

P for difference

P for trend

<15

15–30

30–100

>100

TSH (µUI/mL)

1.98 ± 0.07

2.07 ± 0.06

2.02 ± 0.04

2.05 ± 0.04

0.565

0.451

FT4 (pmol/L)

14.83 ± 0.10

15.06 ± 0.09

15.09 ± 0.06

15.33 ± 0.07

<0.001

<0.001

FT3 (pmol/L)

4.91 ± 0.03

4.91 ± 0.03

5.01 ± 0.02

5.11 ± 0.02

<0.001

<0.001

  1. Data are estimated marginal means ± standard errors calculated in a general linear model, adjusted to age, sex, UI, BMI and smoking status.
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