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Mediation paths.

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posted on 2021-06-07, 17:26 authored by Lucinda Grummitt, Erin Kelly, Emma Barrett, Katherine Keyes, Nicola Newton

Representation of direct and indirect effects examined in mediation analysis. The effect of the predictor (ACE) on the mediator corresponds to path a; the effect of the mediator on the substance use outcome corresponds to path b. The indirect effect is the effect of the ACE on the substance use outcome via the mediator, and is the product of paths a and b (ab). The direct effect corresponds to c’ and represents the effect of the ACE on the substance use outcome that does not occur via the mediator. The total effect of the ACE on the substance use outcome is the sum of the indirect (ab) and direct (c’) effects.

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