Model	Predictor variables	B	SEB	β	t	R²	ΔR²	ΔF
1	Constant	5.561	0.329		16.896	0.001	0.001	0.213
	Family history of disease	0.059	0.128	0.039	0.461
2	Constant	−5.115	0.904		−5.656	0.642	0.641	82.924
	Family history of disease	−0.061	0.083	−0.040	−0.735
HAPA	Task self-efficacy	0.176	0.019	0.562	9.161^b
Variables	Positive outcome expectancy	0.090	0.017	0.321	5.214^b
	Risk perception	0.062	0.034	0.101	1.841
3	Constant	−4.661	1.347		−3.460	0.660	0.018	3.632
	Family history of disease	−0.043	0.082	−0.028	−0.524
HAPA	Task self-efficacy	0.152	0.022	0.486	7.063^b
Variables	Positive outcome expectancy	0.068	0.019	0.242	3.589^b
	Risk perception	0.050	0.034	0.080	1.477
Additional variables	Attitude towards uncertainty	0.073	0.031	0.179	2.376^a
	Anticipated regret	−0.013	0.038	−0.024	−0.355