Table 4.

Hierarchical Regression Results to Predict PBD Intention.

Step	Variable Entered	R 2	R 2 Change	F Change	df	P	β	P
1	Self-efficacy	.24	.24	138.13	1446	<.001	.28	<.001
2	Motivators	.33	.09	58.32	1445	<.001	.33	<.001
3	Barriers	.35	.03	19.94	1444	<.001	−.19	<.001

Note. The Beliefs scale was unable to add significantly to the prediction and therefore was not entered into the regression model.