Table 2.

Statistical test results of regression model

Model		regression coefficient unstandard (B)	Standard Error of regression coefficient	Standard regression coefficient (β)	T	P
1	(Constant)	1.511	.567		2.663	.008
	I1	.851	.025	.850	34.222	.000
2	(Constant)	-2.951	1.012		-2.916	.004
	I1	.817	.025	.817	32.694	.000
	Tmean0	.303	.058	.131	5.258	.000
3	(Constant)	-1.984	1.024		-1.937	.053
	I1	.842	.025	.842	33.218	.000
	Tmean0	1.076	.200	.466	5.371	.000
	Tmean 01	-.851	.212	-.355	-4.022	.000
4	(Constant)	-2.085	1.017		-2.049	.041
	I1	.839	.025	.839	33.307	.000
	Tmean0	.998	.201	.432	4.966	.000
	Tmean 01	-.860	.210	-.359	-4.093	.000
	Rmean0	.168	.006	.075	2.753	.006

Note: dependent variable I