Table 3.

Hierarchical multiple regression analysis predicting behavior.

Step	Variables	R	R 2	R 2 adj.	B	SE	β
1		0.301	0.090	0.088
	Intention				1.896	0.321	0.301∗∗∗
2		0.097	0.097	0.092
	Intention				1.551	0.388	0.246∗∗∗
	PBC				0.662	0.420	0.097
3		0.316	0.100	0.089
	Intention				1.622	0.394	0.257∗∗∗
	PBC				0.784	0.442	0.115
	Attitude				−0.365	0.351	−0.057
	Subjective norm				−0.082	0.330	−0.013
4		0.334	0.112	0.099
	Intention				1.495	0.396	0.237∗∗∗
	PBC				0.874	0.441	0.128
	Attitude				−0.351	0.349	−0.055
	Subjective norm				−0.107	0.329	−0.326
	Gender				−2.474	1.147	−0.110∗

Note: ^∗ p < 0.05; ^∗∗ p < 0.01; ^∗∗∗ p < 0.001.