Table 2.

Multiple linear regression analysis of MoCA scores with serum T3, T4, FT3, FT4, and TSH levels.

Model		Unstandardized coefficient		Standardized coefficient	t	Significance	Collinearity
		B	Standard error	Beta			Tolerance	VIF
1	(Constant)	−6.599	2.811		−2.347	0.022
	T3 (nmol/L)	5.682	1.902	0.268	2.987	0.004	0.681	1.469
	T4 (nmol/L)	0.008	0.015	0.043	0.528	0.599	0.809	1.236
	FT3 (pmol/L)	1.707	0.495	0.279	3.446	0.001	0.837	1.195
	FT4 (pmol/L)	0.136	0.164	0.069	0.826	0.412	0.783	1.277
	TSH (uIU/ml)	1.811	0.318	0.499	5.693	<0.001	0.713	1.403

Dependent variable: MoCA scores; independent variables: T3, T4, FT3, FT4, and TSH levels. MoCA – Montreal Cognitive Assessment scale; VIF – variance inflation factor.