Table 2.

Among all enrolled smokers, effect of HS Intervention on SCT-based mediators, association between mediators and smoking cessation, and mediation effects of the HS intervention (N=1911).

SCT-based mediators	Mediation path		Mediation effect ( $\widehat{\alpha \beta }$c)
	α̂a	β̂b	Estimate	Standard errord
SCT-based mediators primarily targeted by Motivational Interviewing
Importance of quitting smoking	0.068	1.382***	0.039	0.030
Commitment to quitting smoking	0.085†	1.160***	0.044	0.024
Smoking motives
Identity as a smoker	0.005	−0.927***	−0.002	0.003
Social acceptability	0.061	−0.211**	−0.007	0.010
Exercising choice	−0.006	−0.129	0.000	0.003
Feelings/pleasures	0.022	−0.582***	−0.007	0.016
Quitting motives
Self-control	−0.003	0.044	−0.000	0.002
Health	0.011	0.204	0.001	0.003
Relief of social pressure to quit	−0.084	0.176	−0.008	0.007
SCT-based mediators primarily targeted by Cognitive Behavioral Skills Training
Confidence to quit smoking	0.023	1.168***	0.012	0.023
Self efficacy to resist in social situations	0.119**	1.171***	0.057*	0.022
Self-efficacy to resist in stressful situations	0.119*	1.124***	0.057*	0.024
Social norms for smoking	0.007	0.016	0.000	0.001
Total effect of all significant mediators				55.6%

^aStandardized regression coefficient for intervention effect on mediator.

^bStandardized coefficient for association between mediator and cessation outcome controlling for HS intervention.

^cProduct of standardized α and β coefficients.

^dStandard error of the mediation effect.

^*p < .05.

^**p < .01.

^***p < .001.

^****p < .0001.

^†p = .06.