Table 2 Comparison of thyroid parameters of CTM and Non-CTM population.

From: Chronic thyrotoxic myopathy development is associated with thyroid hormone sensitivity index, predicted by lower-limb fatigue and the squat-up test

 

CTM

(n = 82)

Non-CTM

(n = 82)

t/Z

P

FT3 (pmol/L)

23.49

(15.54, 33.65)

14.72

(9.60, 23.92)

3.736

< 0.001

FT4 (pmol/L)

53.00

(36.24, 68.26)

53.00

(23.06, 50.81)

4.251

< 0.001

TSH (mIU/L)

0.01

(0.01, 0.01)

0.01

(0.01, 0.01)

-1.585

0.113

TRAb (IU/L)

16.00

(9.46, 28.16)

7.14

(2.67, 14.47)

4.111

< 0.001

FT3/FT4

0.42

(0.33, 0.62)

0.46

(0.36, 0.55)

-0.222

0.824

TT3RI

0.23

(0.15, 0.33)

0.15

(0.10, 0.29)

2.792

0.005

TT4RI

0.53

(0.36, 0.70)

0.38

(0.23, 0.63)

3.064

0.002

TSHI

2.52

(0.26, 4.86)

0.24

(-1.4, 2.5)

4.044

< 0.001

TFQIFT3

0.03

(-0.22, 0.30)

-0.23

(-0.38, 0.13)

3.095

0.002

PTFQIFT3

0.01

(-0.24, 0.28)

-0.25

(-0.40, 0.14)

3.550

< 0.001

TFQIFT4

0.07

(-0.19, 0.31)

-0.19

(-0.41, 0.12)

2.970

0.003

PTFQIFT4

0.05

(-0.21, 0.29)

-0.21

(-0.43, 0.13)

3.425

0.001

  1. The baseline characteristics of participants were summarized as mean ± standard deviation or median (interquartile range) for continuous variables and proportion (%) for categorical variables according to with or without CTM. The level of significance was accepted at P < 0.05.
  2. CTM, chronic thyrotoxic myopathy; Non-CTM, non-chronic thyrotoxic myopathy; FT3, free triiodothyronine; FT4, free thyroxine; TSH, thyroid stimulating hormone; TRAb, thyroid-stimulating hormone receptor antibody; TT3RI, thyrotrophic triiodothyronine resistance index; TT4RI, thyrotrophic thyroxine resistance index; TSHI, thyroid-stimulating hormone index; TFQIFT3, thyroid feedback quantile-based index calculated by free triiodothyronine; PTFQIFT3, parametric thyroid feedback quantile-based index calculated by free triiodothyronine; TFQIFT4, thyroid feedback quantile-based index calculated by free thyroxine; PTFQIFT4, parametric thyroid feedback quantile-based index calculated by free thyroxine.