Table 2.

Collinear analysis of T, N and TNM stage.

model	Unnormalized coefficient		Normalization Coefficient	t	P	Collinear statistics
	B	Error of standard	Beta			Tolerance	VIF
constant	0.940	0.422		2.226	0.027
T stage	0.137	0.060	0.163	2.294	0.022	0.560	1.784
N stage	0.275	0.055	0.267	4.969	0.000	0.977	1.024
TNM stage	0–0.022	0.174	−0.009	−0.128	0.899	0.559	1.788