Table 2.

Associations of thyroid function with components of the metabolic syndrome

	TSH				fT3				fT4				fT3/ fT4
	r	P r	β	Pβ	r	P r	β	Pβ	r	P r	β	Pβ	r	P r	β	Pβ
BMI	−0.004	0.574	0.012**	< 0.001	0.192**	< 0.001	0.008**	< 0.001	−0.073**	< 0.001	−0.003**	< 0.001	0.209**	< 0.001	0.016**	< 0.001
SBP	0.011	0.161	0.014	0.49	0.151**	< 0.001	0.001**	0.004	0.048**	< 0.001	0.035	0.271	0.082**	< 0.001	−0.02	0.302
DBP	0.004	0.624	0.032	0.102	0.156**	< 0.001	0.006	0.84	0.040**	< 0.001	0.001**	< 0.001	0.094**	< 0.001	−0.031	0.112
FBG	−.0028**	< 0.001	−0.051**	0.006	0.046**	< 0.001	−0.006	0.728	0.041**	< 0.001	0.012**	< 0.001	0.009	0.22	−0.042**	< 0.001
HbA1c	−0.013	0.219	0.001	0.988	0.012	0.242	0.01	0.571	−0.027**	0.008	−0.013*	0.017	0.036**	0.001	0.055**	0.002
TG	0.006	0.458	0.042**	< 0.001	0.120**	< 0.001	0.014	0.443	−0.080**	< 0.001	−0.005**	< 0.001	0.162**	< 0.001	0.015**	< 0.001
TC	0.030**	< 0.001	0.008	0.661	0.025**	0.001	−0.01	0.729	− 0.002	0.801	0.034	0.105	0.027**	0.001	0.004	0.189
LDL-C	0.005	0.538	0.003	0.878	0.068**	< 0.001	0.018**	0.009	0.025**	0.001	0.033	0.074	0.034**	< 0.001	0.009	0.608
HDL-C	0.045**	< 0.001	0.021	0.323	−0.199**	< 0.001	−0.014	0.468	0.061**	< 0.001	0.023**	0.005	−0.201**	< 0.001	−0.065*	0.018
Homocysteine	−0.053**	0.002	−0.001	0.957	0.039*	0.021	−0.003**	< 0.001	0.038*	0.025	0.033	0.077	0.001	0.992	−0.005**	< 0.001

Values of r represent correlation coefficient. Values of β are standardized regression coefficients. P _r represents the significance for r. P_β represents the significance for β. BMI was estimated after adjustment for gender and age. Other variables were estimated after adjustment for gender, age and BMI. *p < 0.05; ** p < 0.01

BMI body mass index, SBP systolic blood pressure, DBP diastolic blood pressure, TSH thyroid stimulating hormone, fT3 free triiodothyronine, fT4 free thyroxine, FBG fasting blood glucose, HbA1c hemoglobin A1c, TC total cholesterol, TG triglyceride, LDL-C low-density lipoprotein cholesterol, HDL-C high-density lipoprotein cholesterol