Table 4 Relative risk of Hashimoto thyroiditis (HT) diagnosed using ultrasonography according to quartiles of serum magnesium as determined using multiple logistic regression analyses.

From: Severely low serum magnesium is associated with increased risks of positive anti-thyroglobulin antibody and hypothyroidism: A cross-sectional study

Serum magnesium (mmol/L)

Model 1a

Model 2b

Model 3c

Model 4d

OR (95% CI)

p

OR (95% CI)

p

OR (95% CI)

p

OR (95% CI)

p

HT using ultrasonography

Serum magnesium

 

0.002

 

0.002

 

0.003

 

0.001

≤0.55

2.748 (1.489–5.070)

0.001

2.847 (1.533–5.287)

0.001

2.763 (1.470–5.193)

0.002

2.944 (1.590–5.450)

0.001

0.551–0.85

0.884 (0.568–1.376)

0.585

0.916 (0.588–1.428)

0.700

0.900 (0.575–1.408)

0.644

0.871 (0.559–1.355)

0.539

0.851–1.15

1.00

 

1.00

 

1.00

 

1.00

 

>1.15

0.806 (0.472–1.378)

0.430

0.785 (0.457–1.349)

0.381

0.755 (0.434–1.313)

0.320

0.832 (0.487–1.420)

0.499

  1. HT: Hashimoto thyroiditis; OR: odds ratio; CI: confidence interval.
  2. aModel 1: adjusted for age, sex, smoking status, and serum iodine concentration;
  3. bModel 2: additionally adjusted for body mass index;
  4. cModel 3: adjusted for all covariates in model 2 as well as income and education;
  5. dModel 4: adjusted for all covariates in model 1, but age was used as a classification variable according to youth, middle age, and old age (as shown in Table 1).
  6. Regression analyses using the forward method, backward method, and all arguments simultaneously were performed; the results were similar.
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