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. Author manuscript; available in PMC: 2015 Sep 1.
Published in final edited form as: Epidemiology. 2014 Sep;25(5):749–761. doi: 10.1097/EDE.0000000000000121

Figure 4.

Figure 4

As an alternative mediation decomposition, the controlled direct effect and the reference interaction (INTref) combine to give the pure direct effect (PDE); the pure direct effect (PDE) and the mediated interaction (INTmed) combine to give the total direct effect (TDE); and the total direct effect (TDE) and the pure indirect effect (PIE) combine to give the total effect (TE).