Table 11.

Comparison of THs levels between normal population and MS population with normal thyroid function.

Indicators	Normal population	MS (n=398)	P	P’
Age (years)	41.7 ± 13.0	50.3 ± 12.3	<0.001	<0.001
Gender (% male)	40.47%	53.02%	<0.001	–
BMI(kg/m2)	22.9 ± 2.9	26.4 ± 3.0	<0.001	–
FT3(pmol/L)	5.04 ± 0.60	5.09 ± 0.55	0.004	0.519
FT4(pmol/L)	15.9 ± 1.89	17.5 ± 1.93	<0.001	<0.001
TSH(mIU/L)	1.63(1.22)	1.56(1.16)	0.107	0.451

Measurement data were compared by analysis of covariance, P was corrected for gender and age, P ‘was further corrected for BMI, and enumeration data were compared by Pearson chi-square test.