Table 5.

Multivariable linear regression analysis showing independent predictors for TSH and fT4 levels in the subgroup of patients with leptin measured.

	Dependent variables
	TSH (R2 = 0.110)		fT4 (R2 = 0.046)
ModelIndependent variables	Beta	p-value	Beta	p-value
Smoking habit*	-0.30	<0.0001	-0.19	<0.0001
FM	0.06	0.19	-0.05	0.29
Age	-0.006	0.88	0.10	0.03
Gender§	-0.04	0.46	-0.02	0.73
Leptin	0.11	0.02	0.006	0.90

Significant associations are shown in bold characters.

*Smoking habit: No = 0, Yes = 1; §Gender: M = 0, F = 1.

BMI, body mass index; FFM, fat-free mass; FM, fat mass.