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Table 3 Logistic regression analyses of the risk of underweight, overweight, and obesity

From: Thyroid function, body mass index, and metabolic risk markers in euthyroid adults: a cohort study

 

Quartile

Low weight

Overweight

Obese

TSH

1

1

1

1

2

1.150(0.970–1.363)

1.102(1.020–1.191) #

1.214(1.075–1.372) #

3

1.097(0.860–1.401)

1.123(1.004–1.257) #

1.359(1.141–1.618) #

4

1.021(0.675–1.544)

1.063(0.881–1.283)

1.714(1.307–2.249) #

fT3

1

1

1

1

2

1.159(0.611–2.196)

1.227(0.886–1.698)

0.947(0.513–1.751)

3

1.134(0.586–2.195)

1.437(1.029–2.007) #

1.217(0.652–2.270)

4

0.855(0.406–1.802)

1.525(1.065–2.183) #

1.500(0.782–2.878)

fT4

1

1

1

1

2

2.526(1.269–5.028) #

0.815(0.721–0.922) #

0.993(0.819–1.205)

3

2.499(1.656–3.770) #

0.703(0.601–0.821) #

0.944(0.738–1.209)

4

1.770(1.223–2.562) #

0.487(0.345–0.687) #

0.941(0.557–1.588)

fT3/ fT4

1

1

1

1

2

0.954(0.698–1.303)

1.020(0.854–1.218)

1.460(1.045–2.040) #

3

0.873(0.552–1.381)

1.265(1.015–1.578) #

2.287(1.550–3.374) #

4

0.763(0.654–1.271)

1.088(0.525–2.253)

4.140(1.727–9.925) #

  1. TSH thyroid stimulating hormone, fT3 free triiodothyronine, fT4 free thyroxine. Low weight, BMI < 18.5 kg/m2; Normal weight, 18.5 kg/m2 ≤ BMI < 23.9 kg/m2; Overweight, 24.0 kg/m2 ≤ BMI < 27.9 kg/m2; Obese, BMI ≥ 28 kg/m2. The cut-offs for the quartiles of TSH were 1.226 μIU/ml, 1.687 μIU/ml, and 2.333 μIU/ml; for fT3 2.68 pg/ml, 2.87 pg/ml, and 3.07 pg/ml; for fT4 0.94 ng/dl, 1.01 ng/dl, and 1.09 ng/dl; and for fT3/fT4 2.58, 2.83, and 3.09
  2. OR and 95% CI were calculated using logistic regression models and adjusted for age and sex. # p < 0.05