Table 4.

Stepwise regression model predicting COVID-19 Booster vaccination intentions of partially or fully vaccinated college students (N = 114).

Variable	B	SE B	β	T	p	R2 Change
Step 1: included variables
Constant	−0.671	0.831		−0.807	0.099
Perceived benefits	0.820	0.063	0.777	13.048	0.000	0.603
Step 1: excluded variables
Perceived susceptibility	0.135			1.746	0.084
Perceived severity	−0.021			−0.344	0.732
Perceived barriers	0.022			0.351	0.726
Self-efficacy	0.024			0.391	0.696
Cues to action	0.275			3.670	0.000
Step 2: included variables
Constant	−2.759	0.973		−2.837	0.005
Perceived benefits	0.629	0.079	0.596	7.943	0.000	0.603
Cues to action	0.266	0.072	0.275	3.670	0.000	0.043
Step 2: excluded variables
Perceived susceptibility	0.078			1.021	0.310
Perceived severity	−0.029			−0.490	0.625
Perceived barriers	−0.003			−0.044	0.965
Self-efficacy	0.046			0.779	0.438

Step 2 total R² = 0.646.