Correlation between Body Mass Index and Thyroid Function in Euthyroid Individuals in Greece

Table 5

Multiple linear regression of somatometric parameters, multiple bivariate logistic regression of BMI classes.

Dependent	Predictors		Coeff.	SE	t	P value	Beta
Linear regression
BMI	Intercept		20.85	1.625	12.83	<0.001	—
	TT4		0.608	0.186	3.27	0.001	0.137
	Age		0.076	0.017	434	<0.001	0.181
Height	Intercept		1.917	0.018	106.82	<0.001	—
	Sex (female versus male)		−0.109	0.008	−14.01	<0.001	-0.446
	Age		−0.002	0.0002	−10.34	<0.001	-0.329
Weight	Intercept		89.48	5.01	17.84	<0.001	—
	TT4		1.77	0.51	3.49	<0.001	0.14
	Sex (female versus male)		−14.08	1.98	−7.12	<0.001	−0.29
Dependent	Predictor	Coeff.	Lower 95% CL		Upper 95% CL		P value
Logistic regression
BMI > 25	Age	1.046	1.031		1.062		<0.001
	TT3	2.608	1.041		6.533		0.041
BMI > 30	Age	1.025	1.013		1.038		<0.001
	TT3	2.106	1.016		4.364		0.045
BMI > 35	TT4	1.409	1.120		1.774		0.004
	FT4	0.224	0.045		1.126		0.069