Table 4.

Multiple regression results for the relationship between FT4 with variables studied.

	Model 1		Model 2		Model 3		Model 4
	β	p	β	p	β	p	β	p
logTC	0.081	0.031	0.138	<0.001	0.145	<0.001	0.162	<0.001
logTG	-0.028	0.452	0.013	0.725	0.035	0.321	0.039	0.293
logHDL-C	0.126	0.001	0.152	<0.001	0.127	<0.001	0.152	<0.001
logLDL-C	0.069	0.068	0.111	0.003	0.118	0.002	0.126	0.001
logTC/HDL	-0.049	0.192	-0.029	0.435	-0.003	0.925	-0.012	0.741

Model 1 includes FT4 level only. Model 2 includes predictor in model 1, age and ethnicity. Model 3 includes predictors in model 2 and BMI. Model 4 includes predictors in model 3, FT3 and TSH.

Abbreviation: FT3=free triiodothyronine; FT4=free thyroxine; HDL-C=high density lipoprotein cholesterol; LDL-C=low density lipoprotein cholesterol; TC=total cholesterol; TG=triglyceride; TSH=thyroid-stimulating hormone.