Table 3.

Final multivariable model predicting intent to participate in a smoking cessation study.

Predictorsa	b	Standard error	β	t (df)	P value
Importance of quitting smoking	0.14	0.02	.25	5.69 (1)	<.001
Perceived message relevance	0.72	0.07	.45	9.61 (1)	<.001
Affective risk response	0.39	0.09	.21	4.42 (1)	<.001

^aList of variables included in the model’s variable selection process: age, gender, history of lung cancer screening, eHealth literacy, years smoking, urge to smoke, importance of quitting smoking, confidence to quit smoking, belief quitting reduces risk of cancer, motivation to quit smoking, perceived message relevance, message credibility, message clarity, informed decision making about participation in a cessation study, combined risk perception, and affective risk response.