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. Author manuscript; available in PMC: 2021 Aug 15.
Published in final edited form as: Stat Med. 2020 May 4;39(18):2423–2436. doi: 10.1002/sim.8546

Figure 1: Causal graphs of the mediation models.

Figure 1:

A) Traditional mediation analysis focus on the exposure influencing individual biomarkers, B) Mediation analysis tests whether any of these predefined q sets mediate the exposure/outcome relationship.