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Table 1 Causal Inference Terms Description for Therapeutic Interventions

From: Choosing what works for whom: towards a better use of mechanistic knowledge in clinical practice

Term

Meaning

Example

Intervention’s Effect

Mean between-group difference in a given outcome driven by the intervention [9]

Average pain improvement driven by one intervention (e.g. exercise) in comparison to another (e.g. manual therapy)

Mediators of Effect

A mediator is variables by which one intervention affects an outcome [9]

The effect of exercise on pain is partially channeled through one or several putative mediators (e.g. reduction in pain sensitivity [10])

Moderators of Effect

A moderator is a variable such that the effect of the treatment on the outcome differs for different levels of the moderator variable [9]

High levels of fear-avoidance beliefs are associated with poor treatment outcome in subjects with low back pain [11]