. 2017 Nov 14;20(12):1434–1441. doi: 10.1093/ntr/ntx193

Table 3.

Natural Direct and Indirect Effects of the Intervention on 30-Day Point Prevalence Abstinence at 12-Months

		OR (95% CI)^a
Mediator		Natural direct effect	Natural indirect effect
Quitline or local clinic program use	Crude	2.39 (1.04–5.47)	0.89 (0.79–1.00)
Quitline or local clinic program use	Mediated^*	2.53 (1.01–6.33)	0.90 (0.80–1.02)
NRT use	Crude	2.18 (0.96–4.96)	0.96 (0.88–1.05)
NRT use	Mediated^*	2.36 (0.94–5.95)	0.98 (0.90–1.06)
Motivation to quit	Crude	2.40 (0.94–6.11)	0.78 (0.35–1.75)
Motivation to quit	Mediated^*	2.70 (0.93–7.83)	0.85 (0.36–1.98)
Self-efficacy to quit	Crude	3.70 (0.94–14.67)	0.82 (0.45–1.49)
Self-efficacy to quit	Mediated^*	2.41 (0.47–12.41)	1.42 (0.73–2.76)

CI = confidence interval; NRT = nicotine replacement therapy; OR = odds ratio.

^aAdjusted for baseline measures of race, age, gender, enrollment time, health, depression, cigarettes per day, nicotine dependence, lifetime quit attempts, previous NRT use, motivation to quit, and self-efficacy to quit using propensity score methods

*Mediated analyses include the hypothesized mediator in the analysis.