Table 3.

Levels and types of intervention fidelity

Level of fidelity	Types
Deviation from intended intervention	Did not receive any intervention
	Received intervention in other trial arm
	Received an alternative intervention not being evaluated in the trial
Deviation from component(s) of the intended intervention	Did not receive the component
	Component delivered according to description in other trial arm
	Received an alternative component, or component performed in a different way
Deviation from step(s) within component(s) of the intended intervention	Step not done
	Step from other trial arm performed
	Different step performed, or step performed in a different way