Table 2.
Results from Univariate Mediation Analyses.
| apaths | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jump Parameter | Post-quit Slope | |||||||||||
| Int | a11 | a21 | Int | a12 | a22 | |||||||
| Mediator | Est | 95%CI | Est | 95%CI | Est | 95%CI | Est | 95%CI | Est | 95%CI | Est. | 95%CI |
|
| ||||||||||||
| Withdrawal | .60* | (.44,.76) | −.13 | (−.31,.05) | −.32* | (−.51, −.14) | −.02 | (−.04,.01) | −.02 | (−.05,.01) | −.02 | (−.05,.01) |
|
| ||||||||||||
| Craving | 1.06* | (.70,1.41) | −.31 | (−.71,.09) | −.69* | (−1.12, −.27) | −.09* | (−.14, −.05) | −.03 | (−.08,.02) | −.03 | (−.08,.02) |
|
| ||||||||||||
| Negative Affect | .16* | (.08,.23) | −.05 | (−.14,.03) | −.09* | (−.18, −.00) | −.00 | (−.02,.02) | −.01 | (−.02,.01) | −.00 | (−.02,.02) |
|
| ||||||||||||
| Expectations | 1.07* | (.71,1.40) | −.48* | (−.84, −.09) | −.86* | (−1.26, −.45) | −.09* | (−.13, −.05) | .01 | (−.03,.06) | .01 | (−.03,.06) |
| b and cpaths | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Int | b1 | b2 | c1 | c2 | ||||||
| Mediator | Est | 95%CI | Est | 95%CI | Est | 95%CI | Est. | 95% CI | Est. | 95%CI |
| Withdrawal | −.20 | (−.59,.17) | −.38* | (−.54, −.22) | −2.14* | (−3.24, −1.06) | .41* | (.06,.77) | .73* | (.36,1.11) |
| Craving | −.06 | (−.49,.36) | −.21* | (−.28, −.14) | −1.88* | (−2.56, −1.22) | .40* | (.04,.76) | .72* | (.34,1.10) |
| Negative Affect |
−.32 | (−.76,.13) | −.61* | (−1.05, −.19) | −1.15 | (−2.71,.38) | .45* | (.11,.80) | .81* | (.45,1.17) |
| Expectations | −.12 | (−.54,.30) | −.16* | (−.23, −.08) | −.81* | (−1.57, −.05) | .42* | (.07,.78) | .73* | (.36,1.11) |
| Combined Indirect Effects | TheRelative Effectsof Combo Versus Monotherapyon Mediator | |||||||
|---|---|---|---|---|---|---|---|---|
| Monotherapy (a11b1+a12b2) | Combo therapy (a21b1+a22b2) | Jump Effect (a21-a11) | Slope Effect (a22-a12) | |||||
| Mediator | Est | 95%CI | Est | 95%CI | Est. | 95%CI | Est. | 95%CI |
| Withdrawal | .09* | (.02,.19) | .16* | (.06,.27) | .19* | (.06,.32) | −.00 | (−.02,.02) |
| Craving | .14* | (.02,.27) | .20* | (.07,.34) | .38* | (.08,.68) | −.01 | (−.04,.03) |
| Negative Affect |
.04 | (−.01,11) | .06* | (+.00,.14) | .04 | (−.02,.10) | −.00 | (−.02,.01) |
| Expectations | .07* | (.12,.67) | .13* | (.05,.23) | .38* | (.11,.67) | −.00 | (−.03,.03) |
Note. “Int” reflects the intercept or baseline effects for the placebo condition. The letters (a, b, c etc.) designate estimated causal paths in the meditational models and are defined in Figure 1.
*
indicates statistical significance, two-tailed alpha=.05