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. Author manuscript; available in PMC: 2022 Oct 1.
Published in final edited form as: Drug Alcohol Depend. 2021 Jul 28;227:108927. doi: 10.1016/j.drugalcdep.2021.108927

Table 3:

Mediation Analysis

Model Number 1 2 4 5
Race 1 + Controls 2 + Mediators 4 + Interactions
Total Indirect Effect (Bootstrapped 95% CI)† - - −0.042** −0.036*
- - (−0.053 - −0.031) (−0.071 - −0.001)
Direct Effect (Bootstrapped 95% CI)§ - −0.182** −0.139** −0.145**
- (−0.211 - −0.153) (−0.170 - −0.109) (−0.196 - −0.095)
Total Effect (Bootstrapped 95% CI)‡ - −0.182** −0.182** −0.182**
- (−0.211 - −0.153) (−0.211 - −0.153) (−0.211 - −0.153)
Proportion of Indirect to Total Effect (Bootstrapped 95% CI)‖ - - 0.233** 0.201
- - (0.163 - 0.303) (−0.002 - 0.404)
**

p<0.01,

*

p<0.05

†

Variation in initiation related to race that is explained by mediators

§

Variation in initiation related to race, taking into account relevant mediators

‡

Variation in initiation associated with race without accounting for mediators

‖

Proportion of the total effect that goes through the indirect effect