Table 3 Comparisons of the thyroid parameters of patients with stage I and stage II PTC

FT3 (pmol/L)

4.95 (4.58, 5.36)

4.72 (4.25, 5.13)

 < 0.001

FT4 (pmol/L)

16.79 (15.21, 18.56)

16.59 (15.10, 18.30)

0.449

TSH (mIU/L)

2.46 (1.69, 3.70)

2.54 (1.76, 3.76)

0.482

TSHI

3.19 (2.77, 3.59)

3.21 (2.86, 3.59)

0.783

TT4RI

41.18 (27.96, 62.15)

42.34 (30.10, 62.18)

0.581

TFQI

0.03 (-0.21, 0.28)

0.05 (-0.17, 0.24)

0.982

PTFQI

0.09 (-0.16, 0.38)

0.09 (-0.11, 0.32)

0.993

FT3/FT4

0.30 (0.27, 0.33)

0.29 (0.25, 0.32)

0.002