an intervention is or is not effective. Furthermore,
given that HEALTHY was a large multi-site study,
process evaluation helped to ensure that intervention
components were implemented equally and
consistently across sites. Finally, process evaluation
data were used to refine the implementation of the
HEALTHY intervention using a rapid feedback
system whereby process evaluation findings concerning
intervention strengths, challenges and recommendations
were reported to the intervention
team twice per year during implementation.
A variety of components were assessed in the process
evaluation of the HEALTHY PE intervention,
including fidelity, dose delivered, implementor participation,
dose received and barriers [20, 25]. ‘Fidelity’
is the extent to which intervention components
were delivered as expected. ‘Dose delivered’ i